NEET Biology Class 9 Chapter 7 Origin Of Life Multiple Choice Question And Answers

by

Origin Of Life Exercise Multiple Choice Questions

Question 1. If the fossil of an organism is found in the deeper layers of the earth, then we can predict that.

  1. The extinction of organisms has occurred recently.
  2. The extinction of organisms has occurred thousands of years ago.
  3. The fossil position in the layers of the earth is not related to its time of extinction
  4. The time of extinction cannot be determined.

Answer: 2. The extinction of organisms has occurred thousands of years ago.

Read And Learn More: NEET Biology Class 9 Multiple Choice Question And Answers

Question 2. From the list given below, select the character that can be acquired but not inherited.

  1. Colour of eye
  2. Colour of skin
  3. Size of body
  4. Nature of hair

Answer: 3. Size of body

Question 3. A trait is an organism is influenced by

  1. Paternal DNA only
  2. Maternal DNA only
  3. Both maternal and paternal DNA
  4. Neither by paternal nor by maternal DNA

Answer: 3. Both maternal and paternal DNA

Question 4. The theory of the evolution of species by natural selection was given by

  1. Mendel
  2. Darwin
  3. Morgan
  4. Lamarck

Answer: 2. Darwin

Question 5. Some dinosaurs had feathers although they could not fly birds have feathers that help them to fly. In the context of evolution, this means that

  1. Reptiles have evolved from birds
  2. There is no evolutionary connection between reptiles and birds.
  3. Feathers are homologous structures in both organisms
  4. Birds have evolved from reptiles

Answer: 4. Birds have evolved from reptiles

Question 6. Archaeopteryx shows the origin of

  1. Birds from reptiles
  2. Mammals from reptiles
  3. Reptiles from amphibians
  4. Birds from amphibians

Answer: 1. Birds from reptiles

Question 7. Which of the following pairs are homologous?

  1. Sweet potato and ginger
  2. Passiflora tendril and Bougainvillea thorn
  3. Insect wing and bird wing
  4. Tortoiseshell and mollusk shell

Answer: 2. Passiflora tendril and Bougainvillea thorn

Question 8. The oldest age when life existed on the Earth is

  1. Archaeozoic
  2. Azoic
  3. Cenozoic
  4. Proterozoic

Answer: 1. Archaeozoic

Question 9. First photoautotroph organisms were

  1. Bryophytes
  2. Algae
  3. Cyanobacteria
  4. Bacteria

Answer: 4. Bacteria

Question 10. The study of fossils comes under

  1. Organic evolution
  2. Palaeogeography
  3. Paleontology
  4. Herpetology

Answer: 3. Palaeontology

Question 11. Tail is lacking in

  1. Lemurs
  2. Apes
  3. Monkeys
  4. None of these

Answer: 2. Apes

Question 12. Which of the following is most important for the origin of life?

  1. Carbon
  2. Oxygen
  3. Water
  4. Nitrogen

Answer: 3. Water

Question 13. Galapagos islands are associated with the name of

  1. Wallace
  2. Malthus
  3. Darwin
  4. Lamarck

Answer: 3. Darwin

Question 14. Species occurring in different geographical areas are called

  1. Sibling
  2. Neopatric
  3. Sympatric
  4. Allopatric

Answer: 4. Allopatric

Question 15. Lamarck’s theory of evolution is also called

  1. Survival of the finest
  2. Special creation theory
  3. Inheritance of acquired characters
  4. None of these

Answer: 3. Inheritance of acquired characters

Question 16. The theory of spontaneous generation was given by

  1. Louis Pasteur
  2. Spallanzani
  3. F. Redi Van
  4. Helmont

Answer: 4. Helmont

Question 17. Which of the following were first evolved organisms?

  1. Chemoautotrophs
  2. Chemoheterotrophs
  3. Cyanobacteria
  4. Bacteria

Answer: 2. Chemoheterotrophs

Question 18. Darwin’s theory does not include

  1. Natural selection
  2. Survival of the fittest
  3. Evolution through inheritance
  4. Struggle for existence

Answer: 1. Natural selection

Question 19. Which is the most advanced theory of the origin of life?

  1. Spontaneous
  2. Catastrophic
  3. Oparin and Haldane
  4. Non-spontaneous

Answer: 3. Oparin and Haldane

Question 20. Which one of the following aspects was found in Darwin’s fiches?

  1. Biogeographic evidence
  2. Industrial melanism
  3. Biochemical evidence
  4. Embryological evidence

Answer: 1. Biogeographic evidence

Question 21. The wings of bats and birds are

  1. Homologous but not analogous
  2. Neither homologous
  3. Nor analogous analogous but not homologous
  4. Vestigial

Answer: 1. Homologous but not analogous

Question 22. ‘Use and disuse theory was proposed by

  1. Lamarck
  2. Darwin
  3. Hugo de Vries
  4. Malthus

Answer: 1. Lamarck

Question 23. Darwin’s theory states that

  1. Characters are acquired through inheritance
  2. Nature selects species that can adapt
  3. Species change morphologically with
  4. Nature’s effect of environment on Evolution

Answer: 2. Nature selects species that can adapt

Question 24. There is no life on the moon because of the absence of

  1. Water
  2. Oxygen
  3. Nitrogen
  4. Hydrogen

Answer: 1. Water

Question 25. The gases used in the spark-discharge apparatus were

  1. NH3 ,NH4 and O2 O2,
  2. CO2 and NH3
  3. CO2, NH3 and CH4 H2,
  4. CH4  and NH3

Answer: CH4  and NH3

Question 26. Which of the following is a living fossil?

  1. Moss
  2. Saccharomyces
  3. Spirogyra
  4. Cycas

Answer: 4. Cycas

Question 27. According to Oparin, which one of the following was not present in the primitive atmosphere of the earth?

  1. Oxygen
  2. Hydrogen
  3. Water
  4. Vapour Methane

Answer: Oxygen

Question 28. The evolutionary history of an organism is known as

  1. Ontogeny
  2. Phylogeny
  3. Ancestry
  4. Paleontology

Answer: 2. Phylogeny

Question 29. Which of the following provides the most evident proof of evolution?

  1. Fossils
  2. Morphology
  3. Embryo
  4. Vestigial organs

Answer: 1. Fossils

Question 30. The concept of chemical evolution is based on

  1. Interaction of water, air, and clay under intense heat
  2. Effect of solar radiation on chemicals
  3. Possible origin of life by combination of chemicals under suitable environmental conditions
  4. Crystallization of chemicals

Answer: 3. Possible origin of life by a combination of chemicals under suitable environmental conditions

Question 31. The fiches of the Galapagos islands provide evidence in favor of

  1. Evolution due to mutation
  2. Retrogressive evolution
  3. Biogeographical evolution
  4. Special Creation

Answer: 1. Retrogressive evolution

Question 32. The first organisms to evolve on the earth were

  1. Saprotrophs
  2. Photoautotrophs
  3. Chemoautotrophs
  4. Chemoheterotroph

Answer: 4. Chemoheterotroph

Origin Of Life Assertion And Reason

Directions: Each of these questions contains an Assertion followed by a Reason. Read them carefully and answer the question on the basis of the following options. You have to select the one that best describes the two statements.

  1. Assertion is True, Reason is True; Reason is a correct explanation for Assertion.
  2. Assertion is True, Reason is True; Reason is NOT a correct explanation for Assertion.
  3. Assertion is True, Reason is False.
  4. Assertion is False, Reason is True.

Question 1.

Assertion: The primary atmosphere of primitive earth was reducing.

Reason: Primary atmosphere had an abundance of NH3, CH4, CO2 but had no free O2

Answer: 1. Assertion is True, Reason is True; Reason is a correct explanation for Assertion.

Question 2.

Assertion: Homologous organs serve different functions and look alike, but have the same embryonic origin.

Reason: Homologous organs have specific significance.

Answer: 2. Assertion is True, Reason is True; Reason is NOT a correct explanation for Assertion.

Question 3.

Assertion: The first living organisms were heterotrophs.

Reason: They were surrounded by preformed organic molecules which they used as food.

Answer: 1. Assertion is True, Reason is True; Reason is a correct explanation for Assertion.

Question 4.

Assertion: Organic compounds gradually accumulate in the ocean.

Reason: These were pre-determined as oceans favored their growth.

Answer: 3. Assertion is True, and Reason is False.

Question 5.

Assertion: A single mutation may produce a new species.

Reason: Mutations cause variation in chromosomes and genes and are, therefore, inheritable.

Answer: 1. Assertion is True, Reason is True; Reason is a correct explanation for Assertion.

Question 6.

Assertion: Acquired characters are noninheritable.

Reason: Acquired characters generally affect the somatic cells and it is the germ cells that are passed on to the next generation.

Answer: 1. Assertion is True, Reason is True; Reason is a correct explanation for Assertion.

Question 7.

Assertion: Man has descended from apes.

Reason: Monkeys resemble humans more than apes do.

Answer: 3. Assertion is True, and Reason is False.

Question 8.

Assertion: Homologous organs are similar in basic structure and embryonic origin, but serve different functions.

Reason: Similarity in basic structure points to common ancestry whereas diversity in function reflects adaptation to different modes of life.

Answer: 1. Assertion is True, Reason is True; Reason is a correct explanation for Assertion.

Question 9.

Assertion: Vestigial organs are greatly reduced and functionless.

Reason: These organs were fully developed and functional in the ancestral forms, but are gradually disappearing due to changes in the mode of life of their descendants.

Answer: 1. Assertion is True, Reason is True; Reason is a correct explanation for Assertion.

Question 10.

Assertion: Tadpole has a bird-like form, tail and gills.

Reason: The Tadpole stage is the recapitulation of the fish-like ancestor of the frog in the latter life history

Answer: 4. Assertion is False, Reason is True.

 

 

Leave a Comment