Sertoli cells are found in

1. ovaries and secrete progesterone

2. adrenal cortex and secrete adrenalin

3. seminiferous tubules and provide nutrition to germ cells

4. pancreas and secrete cholecystokinin

Vasa efferentia are the ductules leading from

1. testicular lobules to rete testis

2. rete testis to vas deferens

3. vas deferens to epididymis

4. epididymis to urethra

The second maturation division of the mammalian ovum occurs

1. shortly after ovulation before the ovum makes entry imto the Fallopian rube

2. until after the ovum has been penetrated by a sperm

3. until the nucleus of the sperm has fused with that of the ovum

4. in the Graafian follicle following the first maturation division

Which one of the following statements about human sperm is correct?

1. Acrosome has a conical pointed structure used for piercing and penetrating the

egg, resulting in fertilization

2. The sperm lysins in the acrosome dissolve the egg envelope facilitating fertilization

3. Acrosome serves as a sensory structure leading the sperm towards the ovum

4. Acrosome serves no particular function

Which one of the following statements about morula in humans is correct?

1. It has almost equal quantity of cytoplasm as an uncleaved zygote but much more DNA

2. It has far less cytoplasm as well as less DNA than in an uncleaved zygote

3. It has more or less equal quantity of cytoplasm and DNA as in uncleaved zygote

4. It has more cytoplasm and more DNA than an uncleaved zygote 

The part of fallopian tube closest to the ovary is

1. isthmus

2. infundibulum

3. cervix

4. ampulla

A change in the amount of yolk and its distribution in the egg will affect

1. formation of zygote

2. pattern of cleavage

3. number of blastomeres produced

4. fertilization

Foetal ejection reflex in human female is induced by

1. pressure exerted by amniotic fluid

2. release of oxytocin from pitutary

3. fully developed foetus and placenta

4. differentiation of mammary glands

Which one of the following is the most likely reason of not occuring regular menstruation cycle in females ?

1. Fertilisation of the ovum

2. Maintainance of the hypertrophical endometrial lining

3. Maintainance of high concentration of sex-hormones in the blood stream

4. Retention of well-developed corpus luteuin

Seminal plasma in human is rich in

1. fructose, calcium and certain enzymes

2. fructose and calcium but has no enzymes

3. glucose and certain enzymes but has no calcium

4. fructose and certain enzymes but poor in calcium