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
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
Which extra embryonic membrane in humans prevents desiccation of the embryo inside
the uterus ?
1. Chorion
2. Allantois
3. Yolk sac
4. Amnion
Which one of the following statement is incorrect about menstruation?
1. During normal menstruation about 40 mL blood is lost
2. The menstrual fluid can easily clot
3. At menopause in the female, there is especially abrupt increase in gonadotropic
hormones
4. The beginning of the cycle of menstruation is called menarche
Which part of ovary in mammals acts as an endocrine gland after ovulation?
1. Graafian follicle
2. Stroma
3. Germinal epithelium
4. Vitelline membrane
In the human female, menstruation can be deferred by the administration of:
1. LH only
2. Combination of FSH and LH
3. Combination of estrogen and progesterone
4. FSH only
Ultrasound of how much frequency is beamed into human body for sonography ?
1. 30-45 MHz
2. 15-30 MHz
3. 1-15 MHz
4. 45-70 MHz
Withdrawal of which of the following hormones is the immediate cause of menstruation ?
1. Estrogen
2. FSH
3. FSH-RH
4. Progesterone
Which of the following statements is incorrect ?
1. The spermatids differentiate into structurally complex spermatozoa by the process of
spermiogenesis.
2. Fertilisation is a physico-chemical event.
3. Cleavage transforms the fertilized ovum into a sphere of aggregated blastomeres.
into a sphere of aggregated blastomeres.
4. Cleavage divisions bring appreciable increase in the mass of protoplasm in the
developing embryo.