121.

Which one of the following statements with regard to embryonic development in humans is correct?

• Cleavage divisions bring about considerable increase in the mass of protoplasm

• In the second cleavage division, one of the two blastomeres usually divides a little sooner than the second

• With more cleavage divisions, the resultant blastomeres become larger and large

• Cleavage division results in a hollow ball of cells called morula

Endometrium is the lining of

• bladder

• vagina

• uterus

• oviduct

Secretion of androgens by testes is regulated by:

• LTH

• FSH

• ICSH

• Oxytocin

During a woman's life time, she produces about:

• 40-50 eggs

• 300-350 eggs

• 400-500 eggs

• 750-850 eggs

The production and maturation of sperm in testes is known as :

• oogenesis

• sporogenesis

• gametogenesis

• spermatogenesis

The phase of menstrual cycle in humans that lasts for 7-8 days, is :

• menstruation

• luteal phase

• ovulatory phase

• follicular phase

Which one of the following statement with regard to the embryonic development in humans is correct ?

• Cleavage results in a hollow balls of cells called morula

• Cleavage in mammalian ova is unequal holoblastic and horizontal

• Rearrangement of blastomeres, a central cavity is formed inside the morula

• Cleavage bring about considerable increase in the mass of protoplasm

Embryo sac is

• microgametophyte

• microsporangium

• megagametophyte

• megasporangium

Human sperm was discovered by

• Leeuwenhoek

• Aristotle

• Graaf

• Pander

Hormone responsible for the secretion of milk after parturition is

• ICSH

• Prolactin

• ACTH

• LH