The human fetus develops limbs and digits:
1. After one month of pregnancy
2. By the end of second month of pregnancy
3. During the fifth month of pregnancy
4. By the end of second trimester of pregnancy
In the male human being, sperms contain autosomes and
1. Only one Y-chromosome
2. Only one X-chromosome
3. Both X and Y-chromosome
4. Either X or Y-chromosome
The structure of testis of a mammal can be identified by the presence of
(1) Spermatogonia
(2) Spermatocytes
(3) Cells of Sertoli
(4) Spermatids
In the vertebrates testes, for nourishment during spermiogenesis, the spermatids get attached to
(1) Interstitial cells
(2) Sperm-mother cells
(3) Spermatocytes
(4) Sertoli cells
In man the vas deferencs emerges from
(1) Cauda epididymis
(2) Caput epididymis
(3) Corpora cavernosa
(4) Glomus major
Follicular atresia is
(1) Formation of corpus luteum
(2) Degeneration of folliciles
(3) Formation of Graffian follicle
(4) Increase in number of follicles
The menstrual cycle begins with the casting off of
(1) Placenta
(2) Blood
(3) Endometrial lining along with blood vessels
(4) All the three
Graafian follicle of ovary secretes which hormone
1. Cortisone
2. Relaxin
3. Progesterone
4. None of these
Human milk differs from cow's milk in that it contains a
(1) Higher percentage of fat
(2) Higher percentage of carbohydrate
(3) Lower percentage of protein
(4) (2) and (3)
The substrate used for sperm metabolism is produced by the
1. prostate
2. seminal vesicle
3. Cowper's gland
4. testes