NEET Biology Human Reproduction Miscellaneous Multiple Choice Question And Answers

Biology MCQs with answers for NEET – Human Reproduction Miscellaneous

Question 1. The duration of the survival of the sperms in the female genital tract is the longest of 4 years in

1. Guppy fish (Lebistes)
2. Bats
3. Turtle (Malaclemsys)
4. All of the above

Answer:  2. Bats

In bats, the survival period of the sperms in the female genital tract is the longest, i.e. of about 4 years.

Question 2. The testes are present in abdominal cavity throughout the life and never come down in which of the following?

1. Elephant
2. Camel
3. Whale
4. All of these

Answer:  4. All of these

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The testes of elephant, whale and camel are intra abdominal, i.e. they lie inside the abdominal cavity. Thus, option is correct.

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Question 3. FSH is injected to a rat which does not have the anterior lobe of pituitary. What does not occur in the rat?

1. Proliferation of endometrium
2. Development of corpus luteum
3. Maturation of Graafian follicle
4. Accumulation of oestrogen in the blood

Answer:  2. Development of corpus luteum

Development of corpus luteum is brought about by progesterone and LH not by FSH. Progesterone and LH are secreted by the anterior lobe of pituitary. Thus, in the absence of anterior pituitary lobe, corpus luteum would not be formed.

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Question 4. Amnion is absent in

1. Birds
2. Mammals
3. Reptiles
4. Fishes

Answer:  4. Fishes

The foetal membrane, amnion is absent in fishes because fishes are not amniotes. It is present in clade amniota, which includes reptiles, birds, and mammals.

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Question 5. Which animal has the longest gestation period?

1. Shark
2. Walrus
3. Elephant
4. Dog

Answer:  3. Elephant

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Elephant has the longest gestation period among the given animals. The gestation period of an elephant is about 624- 641 days.

Question 6. Sperm of animal species A cannot fertilise ovum of species B because

1. Fertilizin of A and antifertilizin of B are not compatible
2. Antifertilizin of A and fertilizin of B are not compatible
3. Fertilizin of A and B are not compatible
4. Antifertilizin of A and B are not compatible

Answer:  2. Antifertilizin of A and fertilizin of B are not compatible

• During fertilisation, the approximation of sperm and ovum is carried out by fertilizin-antifertilizin compatibility reaction.
• Fertilizin of egg interacts with antifertilizin of the sperm of same species. This interaction makes the sperm to stick to the egg surface. The given situation indicates the antifertilizin of species A is not compatible with fertilizin of species B.

Question 7. Identify the hormones A, B and C that are labelled in the given flowchart.

1. A–GnRH, B–PRL, C–ICSH
2. A–GnRH, B–ICSH, C–ISH
3. A–GnRH, B–FSH, C–LH
4. A–GH, B–FSH, C–LH

Answer:  3. A–GnRH, B–FSH, C–LH

Hypothalamus secretes GnRH (Gonadotropin Releasing Hormone), which stimulates pituitary to release FSH and LH (3). FSH stimulates ovarian follicles to grow while LH stimulates Leydig’s cells to secrete testosterone.

Question 8. The gestation period of cow is

1. 30 days
2. 270 days
3. 280 days
4. 300 days

Answer:  3. 280 days

The gestation period of cow is about 280 days.

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Question 9. If both ovaries are removed from a rat, then which hormone is decreased in blood?

1. Oxytocin
2. Oestrogen
3. Prolactin
4. Gonadotropic

Answer:  2. Oestrogen

When both ovaries are removed from a rat, then oestrogen is decreased in blood. The ovary produces ova and secretes female sex hormones, viz., oestrogen and progesterone.

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Question 10. In rabbit, head of the epididymis present at the head of the testis, is called

1. Vas deferens
2. Gubernaculum
3. Cauda epididymis
4. Caput epididymis

Answer:  4. Caput epididymis

Epididymis is that part of testis in which sperms develop. Its anterior part (head) is known as caput epididymis or globus major.

Question 11. Zonary placenta is found in

1. Carnivores
2. Herbivores
3. Both 1 and 2
4. None of these

Answer:  1. Carnivores

Zonary placenta is found in carnivores. In this type, the placenta takes the form of complete or incomplete band surrounding the foetus.

Question 12. The characteristic feature of the female reproductive system of …………… is the presence of only ovary.

1. Fish
2. Birds
3. Reptiles
4. Bat

Answer:  2. Birds

In birds, only one ovary is present, at the left side of the body.

NEET Biology Mcq Question 13. The estrous cycle is a characteristic of

1. Human males only
2. Human females only
3. Mammalian males other than primates
4. Mammalian females other than primates

Answer:  4. Mammalian females other than primates

Estrous cycle is the characteristic of mammalian females other than primates. It is affected by oestrogen hormone. Estrous is the period during which ovulation occurs and the females mate with male.

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Question 14. The yolk plug is formed by the protrusion of

1. Blastomeres
2. Ectodermal cells
3. Mesodermal cells
4. Endodermal cells

Answer:  4. Endodermal cells

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The yolk plug is formed by the protrusion of endodermal cells. It is formed during the formation of dorsal lip of blastopore in amphibians.

Question 15. The most primitive type or mammalian placenta is

1. Epitheliochorial
2. Syndesmochorial
3. Endotheliochorial
4. Haemochorial

Answer:  1. Epitheliochorial

Epitheliochorial is the most primitive type of mammalian placenta. It has all the six barriers, between fetal and maternal blood, e.g. horse, ass and pig.