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
Given below is a diagrammatic sketch of a portion of human male reproductive system.
Select the correct set of the names of the parts labelled A, B, C, D.
A B C D
1. Ureter Prostate Seminal vesicle Bulbourethral gland
2. Vas deferens Seminal vesicle Prostate Bulbourethral gland
3. Vas deferens Seminal vesicle Bulbourethral gland Prostate
4. Ureter Seminal vesicle Prostate Bubourethral gland
The correct sequence of spermatogenetic stages leading to the formation of sperms in a
mature human testis is
1. spermatocyte - spermatogonia - spermatid - sperms
2. spermatogonia - spermatocyte - spermatid -sperms
3. spermatid-spermatocyte-spermatogonia -sperms
4. spermatogonia-spermatid-spermatocyte -sperms
Which one of the following is the correct matching of the events occurring during
menstrual cycle?
1. Ovulation - LH and FSH attain peak level and shrp fall in the secretion
of progesterone
2. Proliferative phase - Rapid regeneration of myometrium and maturation of
Graafian follicle
3. Development of corpus luteum - Secretory phase and increased secretion of
progesterone
4. Menstruation - Breakdown of myometrium and ovum not fertilized
In humans, at the end of the first meiotic division, the male germ cells differentiate into
the
1. primary spermatocytes
2. secondary spermatocytes
3. spermatids
4. spermatogonia