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Human Reproduction · Question 96

AIPMT 2008MCQEasy📈 Topic in 75% papers+4−1
1

In humans, at the end of the first meiotic division, the male germ cells differentiate into the:

  1. secondary spermatocytes
  2. spermatogonia
  3. primary spermatocytes
  4. spermatids

Answer

(1) secondary spermatocytes

Solution

As per NCERT, some spermatogonia (2n) called primary spermatocytes periodically undergo meiosis.

⇒ A primary spermatocyte completes the first meiotic division (reduction division) leading to the formation of two equal, haploid cells called secondary spermatocytes.

⇒ The secondary spermatocytes undergo the second meiotic division to produce four haploid spermatids.

Answer: (1)

AIPMT 2008

Keep practising — Human Reproduction

2

Which one of the following statements is incorrect about menstruation?

  1. The beginning of the cycle of menstruation is called menarche
  2. At menopause in the female, there is especially abrupt increase in gonadotropic hormones
  3. The menstrual fluid can easily clot
  4. During normal menstruation about 40 ml blood is lost
AIPMT 2008
3

Which extraembryonic membrane in humans prevents desiccation of the embryo inside the uterus?

  1. Yolk sac
  2. Amnion
  3. Chorion
  4. Allantois
AIPMT 2008
4

Which part of ovary in mammals acts as an endocrine gland after ovulation?

  1. Stroma
  2. Vitelline membrane
  3. Germinal epithelium
  4. Graafian follicle
AIPMT 2007
5

Sertoli cells are regulated by the pituitary hormone known as-

  1. LH
  2. FSH
  3. GH
  4. Prolactin
AIPMT 2006
6

Withdrawal of which of the following hormones is the immediate cause of menstruation?

  1. Progesterone
  2. FSH
  3. FSH-RH
  4. Estrogen
AIPMT 2006
7

Grey crescent is the area -

  1. Just opposite to the site of entry of sperm into ovum
  2. At the point of entry of sperm into ovum
  3. At the vegetal pole
  4. At the animal pole
AIPMT 2005
8

If mammalian ovum fails to get fertilized, which one of the following is unlikely?

  1. Corpus luteum will disintegrate
  2. Estrogen secretion further decreases
  3. Primary follicle starts developing
  4. Progesterone secretion rapidly declines
AIPMT 2005
9

Ovulation in the human female normally takes place during the menstrual cycle

  1. At the beginning of the proliferative phase
  2. At the mid secretory phase
  3. Just before the end of the secretory cycle
  4. At the end of the proliferative phase
AIPMT 2004
10

Which of the following hormones is not a secretion product of human placenta?

  1. Estrogen
  2. Progesterone
  3. Prolactin
  4. Human chorionic gonadotropin
AIPMT 2004
11

Bartholin's glands are situated

  1. on the sides of the head of some amphibians
  2. at the reduced tail end of birds
  3. on either side of vagina in humans
  4. on either side of vas deferens in humans.
AIPMT 2003

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