NEET Biology Introduction And Asexual Reproduction Multiple Choice Question And Answers

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Biology MCQs with answers for NEET Introduction And Asexual ReproductionMCQs

Question 1. The ability of living organism to give rise to young ones of its own kind is called

  1. Segregation
  2. Reproduction
  3. Perpetuation
  4. Sedimentation

Answer: 2. Reproduction

Reproduction is defined as a biological process in which an organism gives rise to young ones similar to itself. The offspring grow mature and further produce new offspring.

Question 2. Lifespan can be defined as

  1. Metabolically active life of organisms
  2. life from birth up to reproduction
  3. Period from birth to natural death
  4. All of the above

Answer: 3. Period from birth to natural death

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The most accepted definition of lifespan is the time period from birth to natural death.It is the duration of existence of an individual.

Question 3. Lifespan of a parrot is years.

  1. 60
  2. 80
  3. 140
  4. 70

Answer: 3. 140

The lifespan of a parrot is 140 years. Small parrots such as hanging parrots, lovebirds, and budgets have shorter lifespans of up to 15-20 years. The cockatoo of major Mitchell is the oldest living parrot.

Question 4. Consider the following statements.

  1. Agamogeny involves only meiotic cell divisions.
  2. Agamogeny is an alternative term for asexual reproduction.

Choose the correct option.

  1. Statement 1 is correct, but 2 is incorrect
  2. Statement 1 is incorrect, but 2 is correct
  3. Both statements 1 and are 2 correct
  4. Both statements 1 and 2 are incorrect

Answer: 2. Statement 1 is incorrect, but 2 is correct

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Statement 1 is incorrect, but 2 is correct. Incorrect statements can be corrected as Asexual reproduction is also known as agamogenesis or agamogeny. It involves only mitotic cell divisions.

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NEET Biology Introduction And Asexual Reproduction Multiple Choice Question And Answers

Question 5. Which processes occur in living organisms?

  1. Mitosis
  2. Meiosis
  3. Both 1 and 2
  4. None of these

Answer: 3. Both 1 and 2

In living organisms, cells divide and reproduce in two ways, i.e. mitosis and meiosis.

Question 6. Somatogenic reproduction is an alternative term for

  1. Asexual reproduction
  2. Sexual reproduction
  3. Parthenogenesis
  4. None of the above

Answer: 1. Asexual reproduction

Asexual reproduction is also called somatogenic reproduction. In this process, new organisms are produced from the somatic part of the parental organism.

Question 7. Asexual reproduction is common in

  1. Single-celled organisms
  2. Animals with relatively simple organization
  3. Plants with relatively simple organization
  4. All of the above

Answer: 4. All of the above

Asexual reproduction is common among single-celled organisms and in plants and animals with relatively simple organizations.

Thus, option (4) is correct.

Question 8. Clones are

  1. Morphologically similar individuals
  2. Genetically similar individuals
  3. Both 1 and 2
  4. None of the above

Answer: 3. Both 1 and 2

Morphologically and genetically similar organisms are called clones. These are produced through asexual reproduction. This type of reproduction involves the participation of only a single organism.

Thus, option (3) is correct.

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Question 9. Asexual reproduction takes place in

  1. Monera
  2. Protista
  3. Sponges
  4. All of these

Answer: 4. All of these

All the organisms given in options reproduce via asexual reproduction. In protists and monerans, the organisms or the parent cells divide by binary fission into two new individuals. Sponges also reproduce, via asexual methods, for example, gemmules.

Thus, option (4) is correct.

Question 10. Methods of asexual reproduction in lower organisms include

  1. Binary fission, budding
  2. Fertilisation, syngamy
  3. Porogamy, autogamy
  4. Geitonogamy, xenogamy

Answer: 1. Binary fission, budding

The different methods of asexual reproduction in lower organisms are binary fission, endospore formation, budding, fragmentation, spore formation, etc.

Question 11. Consider the following statements.

  1. Binary fission is a type of asexual reproduction.
  2. Unicellular organisms can divide by binary fission.
  3. In binary fission, two-parent cells divide equally to form offspring.
  4. The offspring produced by binary fission are equal in size.

Choose the option containing correct statements.

  1. 1, 2 and 3
  2. 2 and 4
  3. 1, 2 and 4
  4. 1, 2, 3 and 4

Answer: 3. 1, 2 and 4

All the given statements are correct except 3. Incorrect statement can be corrected as Binary fission is a form of asexual reproduction in which only one parent cell divides by binary fission into two daughter cells. It is a primary method of reproduction in prokaryotic organisms.

Question 12. Binary fission occurs in

  1. Amoeba
  2. Planaria
  3. Paramecium
  4. All of these

Answer: 4. All of these

Binary fission is the most common form of asexual reproduction. It occurs in Amoeba, Planaria, and Paramecium.

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Question 13. Which of the following can be called immortal?

  1. Mayfly
  2. Drosophila
  3. Amoeba
  4. Cicada

Answer: 3. Amoeba

The protozoans like Amoeba are considered as immortal because they divide by binary fission. Amoeba split into half so that each daughter cell is same as the parent. They cannot die, but get bifurcated into daughter cells and produce other Amoeba cells

Question 14. Which of the following animal undergoes longitudinal binary fission?

  1. Euglena
  2. Plasmodium
  3. Planaria
  4. Paramecium
  5. Hydra

Answer: 1. Euglena

Binary fission in Euglena is longitudinal, where division occurs along the longitudinal axis.

Question 15. Consider the following statements.

  1. Plasmodium reproduces by fragmentation only.
  2. Planaria reproduces by multiple fission only.

Choose the correct option.

  1. Statement 1 is correct, but 2 is incorrect
  2. Statement 1 is incorrect, but 2 is correct
  3. Both statements 1 and 2 are correct
  4. Both statements 1 and 2 are incorrect

Answer: 4. Both statements 1 and 2 are incorrect

Both statements 1 and 2 are incorrect and can be corrected as Plasmodium reproduces by multiple fission and Planaria reproduces by fragmentation.

Question 16. Transverse binary fission occurs in

  1. Euglena
  2. Amoeba
  3. Hydra
  4. Paramecium

Answer: 4. Paramecium

Transverse binary fission takes place in ciliates such as Paramecium. The cytoplasm separates transversely between two pairs of nuclei thus, forming two individuals.

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Question 17. Division in a bacterial cell occurs through

  1. Multiple fission
  2. Binary fission
  3. Budding
  4. Plasmotomy

Answer: 2. Binary fission

Binary fission is the common mode of reproduction in bacteria and protists. It occurs without any spindle apparatus formation in the cell.

Question 18. In simple fission,

  1. Cytokinesis takes place along any plane but is always perpendicular to the karyokinesis
  2. Cytokinesis takes place along a plane parallel to the karyokinesis
  3. Cytokinesis takes place along a longitudinal axis
  4. Cytokinesis takes place along transverse axis

Answer: 1. Cytokinesis takes place along any plane, but is always perpendicular to the karyokinesis

In simple or irregular fission, cytokinesis takes place in any direction, but it is always perpendicular to karyokinesis, e.g. Amoeba.

Question 19. Identify the mode of asexual reproduction shown in the diagram given below. 

NEET Biology Introduction and Asexual Reproduction

  1. Fragmentation
  2. Binary fission
  3. Budding
  4. Gemmule formation

Answer: 2. Binary fission

The given figure represents binary fission in which two equal-sized daughter cells are produced from a single parent cell.

Question 20. Select the correctly matched pairs regarding following diagrams.

NEET Biology Introduction And Asexual Reproduction Question 20 Matched Pairs Regarding|

  1. A-Conidia in Chlamydomonas
  2. C-Buds in Hydra
  3. 5-Zoospores in Penicillium
  4. D-Gemmules in sponges

Choose the correct option.

  1. 1 and 2
  2. 2 and 4
  3. 3 and 4
  4. 1, 2, 3 and 4

Answer: 2. 2 and 4

2 and 4 are correctly matched pairs whereas 1 and 3 are incorrectly matched pairs. Figure A represents zoospores in Chlamydomonas, B represents conidia of Penicillium, C represents buds in Hydra and D represents gemmules in sponges.

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Question 21. What is the mode of reproduction in Syllis and Salpa?

  1. Fission
  2. Budding
  3. Fragmentation
  4. Regeneration

Answer: 2. Budding

Budding is an asexual mode of producing new organisms from an outgrowth or bud by cell division at one particular site. The small bulb-like projection coming out from the cell is called a bud, e.g. Syllis (annelid), Salpa (tunicates), etc.

Question 22. Exogenous budding is observed in

  1. Scypha
  2. Hydra
  3. Spongilla
  4. Both 1 and 2

Answer: 4. Both 1 and 2

In exogenous budding, the bud is formed on the outer surface of the parental body, e.g. Scypha and Hydra. Spongilla shows endogenous budding in which bud is formed in the inner side of parental body.

Thus, option (4) is correct.

Question 23. The given figure depicts.

NEET Biology Introduction And Asexual Reproduction Question 23 depicts

  1. Budding
  2. Binary fission
  3. Fission
  4. Zoospore

Answer: 1. Budding

The given figure represents budding in yeast. Budding is an outgrowth from the body which develops into a new individual. It is a form of asexual reproduction.

Question 24. Stolonic budding is characteristic of

  1. Porifera and cnidarians
  2. Scyphistoma cnidarians and poriferans
  3. Porifera and tunicates
  4. Scyphistoma cnidarians and tunicates

Answer: 4. Scyphistoma cnidarians and tunicates

  • Stolonic budding is characteristic of Scyphistoma cnidarians and tunicates. Sponges and coelenterates can reproduce by budding. In some tunicates colonies, different individuals are connected by root-like structures called stolons.
  • These tunicates reproduce asexually by budding. The scyphistoma reproduces asexually to produce polyps by budding.

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Question 25. Regeneration was observed in Hydra by

  1. George Mendel
  2. Abraham Trembley
  3. Leeuwenhoek
  4. Maheshwari

Answer: 2. Abraham Trembley

Trembley (1740) reported that if Hydra is cut transversely into two or more parts, as small as 0.004 mm, then each fragment can grow (Regenerate) into a complete organism.

Question 26. Regeneration means

  1. Formation of the whole body of organism from a small fragment
  2. Replacement of lost body part
  3. Formation of buds
  4. Both (1) and (2)

Answer: 4. Both (1) and (2)

  1. Regeneration is the ability of organisms to replace lost or damaged parts or formation of whole new organisms from a small fragment of parent body.
  2. Thus, option (4) is correct.

Question 27. In restorative regeneration,

  1. Several body parts are redeveloped
  2. Damaged tissues are regenerated
  3. The parent body is divided into two or more individuals
  4. Gemmules are formed

Answer: 1. Several body parts are redeveloped

In restorative regeneration, a multicellular organism can redevelop body parts or the whole body from a body segment. It is very common in invertebrates. It may occur by epimorphosis or morphallaxis.

Question 28. During regeneration, modification of an organ to another organ is known as

  1. Morphogenesis
  2. Epimorphosis
  3. Morphallaxis
  4. Accretionary growth

Answer: 3. Morphallaxis

  • Morphallaxis is a mechanism of regeneration, involving the reorganization of body cells. Thus, it involves the modification of an organ to other organs. Another option explained as Morphogenesis is the formation of organs from the embryo.
  • In epimorphosis, new cells proliferate from the surface of the wound to form the missing structure. In accretionary growth, some specialized cells retain the ability to divide and produce new cells to replace worn-out cells or tissues.

Question 29. Which of the following organisms shows a regenerative type of asexual reproduction?

  1. Amoeba
  2. Planaria
  3. Hydra
  4. All of these

Answer: 4.  All of these

  • All given organisms exhibit the regenerative type of asexual reproduction. Most single-celled animals like protists regenerate very well.
  • If part of the cell fluid or cytoplasm is removed from Amoeba, it is readily replaced. Hydra also shows regeneration. Planaria is a type of flatworm it is cut into two parts, the head will regrow a new tail and the tail will regrow a new head in just a couple of weeks.

Thus, option (4) is correct.

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Question 30. Gemmule formation in sponges is helpful in

  1. Parthenogenesis
  2. Sexual reproduction
  3. Only dissemination
  4. Asexual reproduction

Answer: 4. Asexual reproduction

  • Gemmules are endogenous buds formed by sponges to withstand unfavorable environmental conditions.
  • These are asexually produced masses of cells, which are capable of developing into a new organism.

Question 31. Gemmule consists of a mass of undifferentiated cells called

  1. Archaeocytes
  2. Amoebocytes
  3. Fragments
  4. External bud

Answer: 1. Archaeocytes

Sponges possess archaeocytes as undifferentiated reproductive cells in gemmule and the spicule is the sharp-pointed structure, which is involved in protecting the gemmules from predators

Question 32. Gemmae formation is found in

  1. Salpa
  2. Schypa
  3. Mucor
  4. Marchantia

Answer: 4. Marchantia

Gemmae are green, multicellular, asexual buds that develop in receptacles called gemma cups on the thalli of bryophytes, e.g. Marchantia.

Question 33. Consider the following statements.

  1. Archaeocytes help in the regeneration of sponges.
  2. Archaeocytes are totipotent cells.

Choose the correct option.

  1. Statement 1 is correct, but 2 is incorrect
  2. Statement 1is incorrect, but 2 is correct
  3. Both statements 1 and 2 are correct
  4. Both statements 1 and2 are incorrect

Answer: 3. Both statements 1 and 2 are correct as

Archaeocytes are totipotent cells as they give rise to any other kind of cells within an animal and play an important role in regeneration.

Question 34. Penicillium produces non-motile spores called

  1. Zoospores
  2. Conidia
  3. Fragments
  4. Bud

Answer: 2. Conidia

  • Conidia are asexually produced spores that are borne externally.
  • Penicillium reproduces asexually by conidia.

Question 35. Zoospores are

  1. Motile and asexual spores
  2. Non-motile and asexual spores
  3. Motile and sexual spores
  4. Non-motile and sexual spores

Answer: 1. Motile and asexual spores

Zoospores are asexual spores that are motile in nature. They possess flagella for locomotion. Examples include spores of some algae, fungi, and protozoans.

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Question 36.  are thick-walled spores produced by Rhizopus which are capable of withstanding unfavorable conditions.

  1. Chlamydospores
  2. Zoospores
  3. Oidia
  4. Sporangiospores

Answer: 1. Chlamydospores

Rhizopus is a fungal species that produce thick-walled chlamydospore to withstand unfavorable conditions. When the conditions are favorable, these spores germinate and develop to form new fungal filaments.

Question 37.  Match the following columns.

NEET Biology Introduction And Asexual Reproduction Question 37 Match The Following Column

Answer: 2. A-2, B-1, C-4, D-3, E-5

Question 38. Find the correct match.

  1. Pelomyxa- Multiple fission
  2. Scypha – Budding
  3. Amoeba – Budding
  4. Paramecium – Irregular binary fission

Answer: 2. Scypha – Budding

  • Option (2) is correctly matched pair asIn Scypha, asexual reproduction takes place by budding and regeneration. Other options represent incorrectly matched pairs.
  • These can be corrected as in Pelomyxa, asexual reproduction occurs by plasmogamy, in Amoeba, by binary fission, and in Paramecium, by transverse binary fission.

Question 39. They are means of vegetative propagation.

  1. Protoplast fusion
  2. Tissue culture
  3. In vitro fertilisation
  4. Both (1) and (2)

Answer: 4. Both (1) and (2)

The process of vegetative reproduction can be natural or artificial. Protoplast fusion and plant tissue culture are biotechnological techniques used in propagation of plants through vegetative cells.

Thus, option (4) is correct.

Question 40. Examples of vegetative propagules are

  1. Rhizome
  2. Tuber
  3. Offset
  4. All of these

Answer: 4. All of these

All given options are examples of vegetative propagules. In plants, the units of vegetative propagation are called vegetative propagules, i.e. runner, rhizome, sucker, tuber, offset, bulb, etc. These are all capable of giving rise to new offspring.

Thus, option (4) is correct.

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Question 41. The most significant value of vegetative propagation is that

  1. A large population of genetically identical progeny arises
  2. It produces a new variety
  3. It is an ancient practice
  4. It enables the rapid production of genetic variation

Answer: 1. A large population of genetically identical progeny arises

The greatest advantage of vegetative propagation is that all the plants develop by this method are genetically similar, i.e. a large population of genetically identical progeny arises.

Question 42. Among the following which one is not a method of vegetative propagation?

  1. Budding
  2. Layering
  3. Sowing
  4. Tissue culture

Answer: 3. Sowing

Sowing is the method of planting seeds which then develop into the plant. Whereas, budding, layering and tissue culture are the method of vegetative propagation. So, sowing is not a method of vegetative propagation.

Question 43. Assertion (A) plant can be retained and multiplied indefinitely without any change or variation through asexual reproduction. Reason (R) Asexual reproduction does not involve meiosis and syngamy.

  1. Both A and R are true and R is the correct explanation of A
  2. Both A and R are true, but R is not the correct explanation of A
  3. A is true, but R is false
  4. Both A and R are false

Answer: 1. Both A and R are true and R is the correct explanation of A

Both A and R are true and R is the correct explanation of A.Asexual reproduction is a type of reproduction that does not involve the fusion of gametes or syngamy and change in the number of chromosomes due to the absence of meiosis. The offspring that are produced are not only identical to one another but are also exact copies of their parent.

Question 44. Consider the following statements.

  1. In some plants, the process of fertilization and meiosis does not occur in their life cycles.
  2. In these plants, the vegetative or somatic plant body helps in the propagation of the plant.

Choose the correct option.

  1. Statement 1 is correct, but 2 is incorrect
  2. Statement 1 is incorrect, but 2 is correct
  3. Both statements 1 and 2 are correct
  4. Both statements 1 and 2 are incorrect

Answer: 3. Both statements 1 and 2 are correct as

In some asexually reproducing plants meiosis or fertilization does not occur. Vegetative propagation in plants is a type of asexual reproduction in which plant body is propagated directly from some vegetative part of the adult plant.

Question 45. Leaves are used for vegetative propagation in 

  1. Solanum sp.
  2. Brassica sp.
  3. Kalanchoe sp.
  4. Opuntia sp.

Answer: 3. Kalanchoe sp.

Some plants produce adventitious buds on their leaves, for example,  Bryophyllum, Begonia, Streptocarpus, Kalanchoe, and Saintpaulia. These leaves when come in contact with moist soil, develop new plantlets along the margins.

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Question 47. Vegetative propagule in Agave is termed as 

  1. Rhizome
  2. Bulbil
  3. Offset
  4. Eye

Answer: 2. Bulbil

Bulbils are small bulb-like structures that are mainly present in the axil of the leaf and stem. Agave bears bulbil which when falls on the ground, forms a new plant.

It is present in the axil of bracts in Agave. Bulbils are considered modified vegetative and floral buds, which store food and also help in vegetative propagation of plants.

Question 48. Vegetative reproduction in Cycas occurs by

  1. Sporophyll
  2. Bulbils
  3. Scaly leaves
  4. Fragmentation

Answer: 2. Bulbils

Vegetative reproduction in Cycas occurs through bulbils. They are produced adventitiously in the crevices between persistent leaf bases. During favorable period, they separate from parent plant and grow into independent new plants.

Question 49. Filamentous algae reproduce by

  1. Fragmentation
  2. Budding
  3. Binary fission
  4. Conidia

Answer: 1. Fragmentation

Fragmentation is a mode of asexual reproduction in which parent body breaks into two or more fragments. Fungi, mosses, and filamentous algae commonly show this type of reproduction.

Question 50. Bulb helps in vegetative reproduction of

  1. Tomato
  2. Potato
  3. Rye
  4. Onion

Answer: 4. Onion

Bulb is the unit of vegetative propagation. The stem is shortened down to a disc, often called the basal plate from which roots arise around the edge, e.g. onion, garlic, tulip, etc. So, bulb helps in vegetative reproduction of onions.

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Question 51. An example of corm is

  1. Ginger
  2. Colocasia
  3. Onion
  4. Potato

Answer: 2. Colocasia

Corms are unbranched round underground stems. They propagate through budding and give rise to daughter plants. Their base contains a number of adventitious roots, i.e. Colocasia.

Question 52. Plant which reproduces through rhizome is

  1. Solanum tuberosum
  2. Ginger
  3. Achyranthus
  4. All of the above

Answer: 2. Ginger

Rhizomes are root-like stems that grow horizontally under the ground. New roots and shoots form at the nodes with shoots growing upwards to form new plantlets.Lateral buds grow out to form new rhizomes, e.g. ginger, turmeric, etc.

Question 53. Assertion (1) A condensed rhizome is corm. Reason (R) Zinziber stem is rhizome.

  1. Both A and R are true and R is the correct explanation of A
  2. Both A and R are true, but R is not the correct explanation of A
  3. A is true, but R is false
  4. Both A and R are false

Answer: 2. Both A and R are true, but R is not the correct explanation of A.

Corm is a thick, large, fleshy unbranched, underground stem. This is a condensed form of a rhizome growing in a vertical direction.Zinziber stem is rhizome.

Question 54. Vegetative propagation in mint occurs by

  1. Offset
  2. Rhizome
  3. Sucker
  4. Runner

Answer: 3. Sucker

Vegetative propagation in mint occurs through the sucker.It is a non-green slender stem branch which arises from the underground base of erect shoot or crown. It grows horizontally in the soil and ultimately comes out to form a new aerial shoot. Each sucker has nodes with scale leaf and axillary bud.

Question 55. Chrysanthemum multiplies vegetatively by

  1. Suckers
  2. Runners
  3. Stolons
  4. Rhizomes

Answer: 1. Suckers Chrysanthemum is propagated or multiplied vegetatively either through root suckers or terminal cuttings.

Question 56. Vegetative propagation in Pistia occurs by 

  1. Stolon
  2. Offset
  3. Runner
  4. Sucker

Answer: 2. Offset

Vegetative propagation in Pistia occurs by offset. These branches originated from the main stem.Upper portion of these branches is curved and has group of leaves and the lower portion have roots. Each branch when separate, can grow independently to form a new plant.

Question 57. Offsets are produced by

  1. Meiotic divisions
  2. Parthenogenesis
  3. Parthenocarpy
  4. Mitotic division

Answer: 4. Mitotic division

Offsets are produced by the mitotic division of the main stem of the plant.

Question 58. Identify the incorrect statement about runner.

  1. It develops from the axillary bud of stem
  2. It does not possess roots
  3. It is a slender, prostrate, subaerial branch with long internodes
  4. It creeps on the ground and becomes rooted at the nodes

Answer: 2. It does not possess roots

Statement in option (2) is incorrect and can be corrected as Runners grow horizontally or just below the soil’s surface. As runners grow, they develop adventitious roots from buds, located at nodes or their tips. Thus, they possess roots. Rest statements are correct about runners.

Question 59. The ‘eyes’ of the potato tuber are

  1. Root buds
  2. Flower buds
  3. Shoot buds
  4. Axillary buds

Answer: 4. Axillary buds

  • The axillary buds of the potato tuber are called ‘eyes’ in common language. They are found at the nodes of the stem tuber.

Question 60. Potato is multiplied vegetatively with the help of 

  1. Corm
  2. Rhizome
  3. Tuber
  4. Phyllode

Answer: 3. Tuber

Potatoes are mainly propagated by tubers. Potato tubers have nodes or eyes from which the new growth begins. The new stems growing from each eye are called sprouts which give rise to the new plant.

Question 61. Reproductive roots taking part in reproduction are found in

  1. Dalbergia (shisha)
  2. Dahlia
  3. Sweet potato (Ipomoea batatas)
  4. All of the above

Answer: 4. All of the above

Some fleshy adventitious roots develop buds which can grow into new plants. These are called reproductive roots. These roots serve as means of vegetative propagation in Dalbergia, Dahlia, sweet potato, etc.

Thus, option (4) is correct.

Question 62. In Albizzia, vegetative propagation takes place with the help of

  1. Fasciculated tuberous roots
  2. Epiphyllous buds
  3. Subaerial branches
  4. Non-fleshy roots

Answer: 4. Non-fleshy roots

  • In Albizzia, vegetative propagation occurs with the help of non-fleshy roots.
  • A suitable root is chosen from the plant and cut.
  • This root is then inserted into the soil which develops into a new plant.

Question 63. Identify the incorrectly matched pair.

  1. Cynodon – Runner
  2. Bryophyllum – Epiphyllous bud on leaf
  3. Dahlia – Tuberous root
  4. Solanum tuberosum – Bulbil

Answer: 4. Solanum tuberosum – Bulbil

Option (4) is an incorrectly matched pair and can be corrected as In Solanum tuberosum, vegetative propagation occurs by stem tubers. Rest options are correctly matched pairs.

Question 64. Which one of the following statements is not correct?

  1. Offspring produced by asexual reproduction is called clone
  2. Microscopic, motile asexual reproductive structures are called zoospores
  3. In potatoes, bananas,s and ginger, the plantlets arise from the internodes present in the modified stem
  4. Water hyacinth growing in the standing water drains oxygen from water that leads to the death of fishes

Answer: 3. In potatoes, bananas,s and ginger, the plantlets arise from the internodes present in the modified stem

All given statements are correct except the statement in option (3). The incorrect statement can be corrected as In potato, banana, and ginger, the plantlets arise from the nodes present on the modified stem.

Question 65. Choose the option with the correct identification of A, B, C, D, and E given below.

NEET Biology Introduction And Asexual Reproduction Question 65

  1. A-Tuber, B-Rhizome, C-Eyes, D- Leaf bud, E-Offset
  2. A-Offset, B-Eyes, C-Leaf bud D-Stolon, E-Sucker
  3. A-Offset, B-Leaf buds, C-Eyes D-Stolon, E-Sucker
  4. A-Tuber, B-Rhizome, C-Bulbil D- Leaf buds, E-Offset

Answer: 4. A-Tuber, B-Rhizome, C-Bulbil D- Leaf buds, E-Offset

The correct identification of A, B, C, D, and E are as follows A – Tuber B – Rhizome C – Bulbil D – Leaf buds E – Offsets

Question 66. Various plants and the common method of vegetative propagation are given below.

  1. Grass-Runner
  2. Mango-Grafting
  3. Citrus-Adventive embryonic
  4. Bamboo-Grafting

Choose the option containing incorrectly matched pairs.

  1. 1 and 2
  2. 3 and 4
  3. Only 2
  4. Only 4

Answer: 4. Only 4

Only 4 is an incorrectly matched pair and can be corrected as Bamboos are giant woody stem grasses, i.e. these are monocots. Grafting cannot be done in monocots. The rest others are correctly matched pairs.

Question 67. Find the incorrectly matched pair.

  1. Banana – Rhizome
  2. Cynodon – Runner
  3. Begonia – Leaf
  4. Oxalis – Stem tuber

Answer: 4. Oxalis – Stem tuber

Option (4) is an incorrectly matched pair and can be corrected as Oxalis is vegetatively propagated by runner. Rest options are correctly matched pairs.

Question 68. What is common between vegetative reproduction and apomixis?

  1. Both are applicable to only dicot plants
  2. Both bypass the flowering phase
  3. Both occur around the year
  4. Both produce progeny identical to the parent

Answer: 4. Both produce progeny identical to the parent

Vegetative reproduction and apomixis, both are asexual methods of reproduction, which produce progeny genetically similar to parent.

Question 69. Which one of the following is correctly matched?

  1. Onion – Bulb
  2. Ginger – Sucker
  3. Chlamydomonas – Conidia
  4. Yeast – Zoospores

Answer: 1. Onion – Bulb

Option (1) is a correctly matched pair. Other options are incorrectly matched pairs and can be corrected as Ginger – Rhizome Chlamydomonas – Zoospores Yeast – Ascospores

Question 70. An artificial vegetative method of propagation in which branch remains attached to parent plant till it develops adventitious roots is

  1. Grafting
  2. layering
  3. Cutting
  4. Budding

Answer: 2. layering

In a layering method, stem branch chosen for propagation (layer) remains attached to parent till it has produced adventitious roots. In ground layering, stem is capable of bending and the selected branch is bent down to the soil.

Question 71. Which of the following can be grown through layering method?

  1. Strawberry
  2. Clematis
  3. Begonia
  4. Both (1) and (2)

Answer: 4. Both (1) and (2)

The development of roots on a stem while the stem is still attached to the parent plant is called layering. A layer is the rooted stem following detachment (removal) from the parent plant e.g. Strawberry, Clematis. Begonia is propagated through cutting method.

Thus, option (4) is correct.

Question 72. Vegetative reproduction by layering is found

  1. Jasmine
  2. Mango
  3. Rose
  4. All of these

Answer: 1. Jasmine

Jasmine is an example of mound layering. It is useful in heavy-stemmed, closely branched shrubs and rootstocks of tree fruits.

Question 73. Which of the following propagates through leaf tip?

  1. Marchantia
  2. Moss
  3. Walking fern
  4. Sprout leaf plant

Answer: 3. Walking fern

Adiantum is also called a walking fern.  In Adiantum, the tips of the leaves after coming in contact with the soil give out adventitious roots, produce new leaves, and develop into new plants.

Question 74. A technique of artificial vegetative propagation in which a vegetative portion from the parent plant is cut and grown in a suitable medium under favorable conditions is called

  1. layering
  2. Grafting
  3. Cutting
  4. Budding

Answer: 3. Cutting

In cutting, a vegetative plant part is taken from the parent plant in order to regenerate itself, thereby forming a whole new plant under favorable conditions.

Question 75. Stem cuttings are commonly used for the propagation of

  1. Banana
  2. Rose
  3. Mango
  4. Cotton

Answer: 2. Rose

Stem cutting of at least one-year-old stem is employed for the propagation of rose. The stem sections should be free of diseases and pests. These should have at least one node.

Question 76. Apple and tamarind can be propagated by

  1. Root cutting
  2. Stem cutting
  3. leaf cutting
  4. Tissue cutting

Answer: 1. Root cutting

In root cutting method, the portion of the root is cut from a parent plant, placed in a growing medium, and then left to grow its own system of roots and stems. It is used in apples and tamarind.

Question 77. Which root-promoting hormone is applied to stem cutting?

  1. IAA
  2. IBA
  3. NAA
  4. All of these

Answer: 4. All of these

Auxins stimulate root formation on the stem cuttings, for example, IBA, NAA, and IAA.

Thus, option (4) is correct.

Question 78. Which of the following can be propagated by leaf cutting?

  1. Peperomia
  2. Sansevieria
  3. Arum
  4. Both (1) and (2)

Answer: 4. Both (1) and (2)

Only a limited number of specialized species can form new plants from leaf cuttings. Some species commonly propagated by leaf cuttings include Peperomia, African violet, Sansevieria, and Begonia.

Thus, option (4) is correct.

Question 79. An artificial method that involves joining the parts of two different plants in such a way that they unite and continue their growth as one plant is called

  1. layering
  2. Grafting
  3. Cutting
  4. Doubling

Answer: 2. Grafting

Grafting involves placing a portion of one plant (bud or scion) into or on a stem, root, or branch of another (stock) in such a way that the union is formed and they continue to grow as one plant.

Question 80. In grafting, scion forms

  1. Root system
  2. Shoot system
  3. Adventitious roots
  4. All of the above

Answer: 2. Shoot system

Scion is the detached living part of the plant which is selected for its stems, leaves, flowers or fruits and generates the shoot systems.

NEET Biology MCQ Chapter Wise

Question 81. During grafting, all shoot sprouting is removed from

  1. Stock
  2. Scion
  3. Root
  4. leaf

Answer: 1. Stock

All shoot sprouting from the stock are removed during grafting otherwise they do not permit the scion to grow.

Question 82. The part which is grafted on stock of another tree is called

  1. Graft
  2. Bulbil
  3. Bud
  4. Scion

Answer: 4. Scion

Scion is the detached living part of the plant which is grafted to the stock of another tree by grafting. The joining of scion and stock is known as inosculation.

Question 83. Grafting is not possible in monocots because of

  1. Scattered vascular bundles
  2. lack of cambium
  3. Collateral open vascular bundles
  4. Radial vascular bundles

Answer: 2. lack of cambium

  • The cambium possesses the ability to form secondary xylem and phloem. It is present in dicots and absent in monocots.
  • In the case of grafting, it is very important that the plant should form primary and secondary tissue for its survival. The lack of cambium in monocots makes it impossible to graft. It only works with dicots and gymnosperms.

Question 84. Many scions are grafted on a single stock in

  1. Tongue grafting
  2. Wedge grafting
  3. Crown grafting
  4. lateral grafting

Answer: 3. Crown grafting

In crown grafting, several scions are used and joined on a single stock.

Question 85. During plant grafting, a connection is made between stock and scion through

  1. Xylem
  2. Phloem
  3. Cambium
  4. Tissue

Answer: 3. Cambium

For successful grafting, the vascular cambium of the stock and scion plants are placed in contact with each other, so as to make a connection between them.

Question 86. Stock and scion are of same diameter in

  1. Tongue grafting
  2. Wedge grafting
  3. Crown grafting
  4. Both (1) and (2)

Answer: 4.  Both (1) and (2)

In the tongue grafting, an oblique cut followed by a notch is made in both the stock as well scion. The two perfectly fit upon one another as stock and scion are of the same diameter. In wedge grafting, the V-shaped notch is made in scion and both stock and scion are of the same diameter. In crown grafting, the diameter of stock is greater than that of scions.

Question 87. In which of the following type of grafting, is the diameter of the stock bigger than the scion?

  1. Crown grafting
  2. Tongue grafting
  3. Wedge grafting
  4. Both (1) and (2)

Answer: 1. Crown grafting

The diameter of the stock is more as compared to the diameter of the scion in crown grafting. In this method, many slits are formed on the stock. Scions are inserted in the slits and bandaged.

Question 88. A scion is grafted to a stock. The quality of fruits produced will be determined by the genotype of

  1. Stock
  2. Scion
  3. Both (1) and (2)
  4. Neither stock nor scion

Answer: 2. Scion

When a scion is grafted on a stock, the quality of fruits produced depends upon the genotype of the scion because the scion forms the vegetative part of the plant like stem, branches, leaves, flower, and fruit, while the stock forms the roots.

Question 89. If the scion of a sweet and fleshy plant is grafted with a stock of sour and fibrous plants, then the fruit will

  1. Sweet and fibrous
  2. Sweet and fleshy
  3. Sour and fleshy
  4. Sour and fibrous

Answer: 3. Sour and fleshy

  • Grafting makes it possible to combine the best qualities of different species or varieties into a single plant. The genes of the scion determine the quality of the fruit, so the quality is not diminished by the genetic makeup of the stock.
  • In some cases of grafting, however, the stock can alter the characteristics of the shoot system that develops from the scion. For example, if the scion of a sweet and fleshy plant is grafted with a stock of sour and fibrous plants, then the fruit will be sour and fleshy.

Question 90. In a grafted plant, stock has 48 chromosomes, while scion has 24 chromosomes. The chromosome number for root cells and eggs are

  1. 48 and 24
  2. 24 and 24
  3. 24 and 12
  4. 48 and 12

Answer: 4. 48 and 12

Roots are produced from stock. Stock is diploid so the number of chromosomes in root cells of stock is 48. But the egg is haploid. Thus in an egg, the chromosome number will be 12 as the scion forms a shoot system and its chromosome number is 24.

Question 91. Plants exactly similar to mother plants are obtained through

  1. Seeds
  2. Stem cuttings
  3. Grafting
  4. Both (2) and (3)

Answer: 4. Both (2) and (3)

Plants exactly similar to mother plants are obtained through asexual reproductive methods and vegetative propagation. Stem cuttings and grafting are the means of vegetative propagation.

Thus, option (4) is correct.

Question 92. A technique of grafting in which a single bud with a small part of bark and living tissue is grafted on the particular stock is called

  1. Cutting
  2. Chip budding
  3. Cloning
  4. Stocking

Answer: 2. Chip budding

Chip budding is a form of grafting in which only a bud and a small piece of bark from a stock are used. For budding, the bark on the rootstock must be slipping, i.e. the bark can be easily separated from the wood.

Question 93. Natural vegetative reproduction is not observed in

  1. Bryophyllum
  2. Mango
  3. Potato
  4. Sweet potato

Answer: 2. Mango

The two basic propagation options for mangoes are seed and grafting. Thus, mango is not propagated by natural means.

NEET Biology MCQ Chapter Wise

Question 94. In which one of the following pair both plants can be vegetatively propagated by leaf pieces?

  1. Bryophyllum and Begonia
  2. Chrysanthemum and Agave
  3. Agave and Kalanchoe
  4. Asparagus and Bryophyllum

Answer: 1. Bryophyllum and Begonia

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