FREE NEET Biology Practice MCQ Test: Human Reproduction Exercise 4 Questions Answers With Detailed Explanations [PDF]

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Human Reproduction Topic Based

Question : 1

During fertilisation, a sperm comes in contact with the zona pellucida layer of the ovum and induces changes in the membrane that block the entry of …A… . The secretions of the …B… help the sperm enter into the cytoplasm of the ovum.

 AB
(a)eggszona pellucida
(b)eggs acrosome
(c)additional sperms acrosome
(d)additional spermszona pellucida

Answer: (c)

Question : 2

Parturition is induced by

Answer: (c)

Question : 3

Several hormones like hCG, hPL, estrogen, progesterone are produced by

Answer: (a)

Question : 4

Regarding male pronucleus which among the following statement is correct?

  1. It is the sperm nucleus after entering the ovum at fertilisation.
  2. Both head and neck of sperm contribute to pronucleus formation.
  3. Male pronucleus contains mitochondria.
  4. Sperm head contains pronucleus having diploid set of chromosomes.

Answer: (c)

Only statement I is correct regarding male pronucleus. Others statements are incorrect and can be corrected as

  • Only the head of the sperm contributes towards pronucleus formation.
  • Male pronucleus lacks mitochondria.
  • Sperm head contains pronucleus having haploid set of chromosomes.

Question : 5

Which one of the following is not a male sex accessory gland?

Answer: (a)

Question : 6

Signals for parturition originates from

Answer: (b)

Question : 7

Blastopore is

Answer: (a)

Blastopore is the opening by which the cavity of the gastrula (gastrocoel), communicates with the exterior. It is formed as a result of invagination of endoderm during embryonic development. During maturation of some animals it evolves into the anus or the mouth; in others it is covered over and contributes to the canal joining the primitive gut with the cavity of the neural tube.

Question : 8

Vasa efferentia are the ductules leading from

Answer: (a)

Question : 9

How many sperms are formed from a secondary spermatocyte?

Answer: (c)

Question : 10

Placenta does not perform which of the following function?

Answer: (a)

Question : 11

Assertion:
Human are viviparous.
Reason:
Human are sexually reproducing organism.

Answer: (a)

Question : 12

Select the incorrect statement.

Answer: (a)

The Statement represents the incorrect statement. It can be corrected as The secretion of gonadotropins (LH and FSH) increases gradually during the follicular phase and stimulates follicular development as well as secretions of oestrogens by growing follicles. Rest of the statements are correct

Question : 13

Secondary spermatocytes give rise to

Answer: (d)

Question : 14

In human female the blastocyst

Answer: (d)

Question : 15

During embryonic development, the establishment of polarity along anterior/ posterior, dorsal/ventral or medial/lateral axis is called

Answer: (c)

During embryonic development, the establishment of polarity along anterior/posterior, dorsal/ventral or medial/lateral axis is called organizer phenomenon. The organizer is the part of an embryo consisting of undifferentiated cells that follow a specific course of development by identifying the polarity of particular region.

Question : 16

The secretion of which gland helps in the lubrication of penis?

Answer: (c)

Question : 17

At the time of fertilization, chromosome number

Answer: (c)

Fertilization through the process of the fusion of haploid male and female gametes, ensures the restoration of the diploidy of the human foetus.

Question : 18

Select the incorrect statement.

Answer: (c)

During follicular phase FSH secretion increases. Follicular phase (proliferative phase) usually includes cycle days 6-13 or 14 in a 28 days cycle. The follicle stimulating hormone (FSH) secreted by the anterior lobe of the pituitary gland stimulates the ovarian follicle to secrete estrogens.

Question : 19

Termination of gastrulation is indicated by

Answer: (b)

Question : 20

The given digaram shows LS of testis showing various parts. Identify the parts labelled (A-G) from the list given below.

human-reproduction-class-xii-Chapter-3-neet-mcq-quiz-pdf

  1. Caput epididymis
  2. Cauda epididymis
  3. Vas deferens
  4. Vasa efferentia
  5. Corpus epididymis
  6. Seminiferous tubules
  7. Tunica vaginalis
  8. Tunica albuginea
  9. Tunica vasculosa
  10. Rete testis

Codes A B C D E F G

Answer: (c)

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