51. Cryptorchidism is a condition of testes
A
Unable to descend in scrotal sacs
B
Unable to produce sperms
C
Having been surgically removed
D
Having remained undeveloped
Answer :
Unable to descend in scrotal sacs
52.
The figure shows a section of human ovary. Select the option which gives the correct identification of A and B with function/ characteristic
A
A - Primary oocyte - it is the prophase - I of the meiotic division
B
B - Corpus luteum - secretes progesterone
C
A - Tertiary follicle - forms Graafian follicle
D
B - Corpus luteum - secretes estrogen
Answer :
B - Corpus luteum - secretes progesterone
53. Ovulation or release of ovum occurs on the days of mestrual cycle
A
8 - 10
B
12 - 14
C
4 - 14
D
Lawt two day of menstrual cycle
Answer :
12 - 14
54. Part of sperm involved in penetrating egg membrane is
A
Tail
B
Crosome
C
Allosome
D
Autosome
Answer :
Crosome
55. Ovulation in the human female normally takes place during the menstrual cycle
A
At the end of the proliferative phase
B
At themid secretory phase
C
Just before the end of the secretory phase
D
At the beginning of the proliferativo phase
Answer :
At the end of the proliferative phase
56. Which layer develops first during embryonic development
A
Ectoderm
B
Mesoderm
C
Endoderm
D
Both A and C
Answer :
Endoderm
57. None flagellated sperm are found in
A
Sea - urchin
B
Astacus
C
Ascaris
D
Both B and C
Answer :
Ascaris
58. One of the following is fibrous layer of follicle
A
Theca externa
B
Zona pellucida
C
Membrana granulose
D
Vlitelline membrane
Answer :
Theca externa
59. Germinal epithelial cell are cuboidal and these are found in
A
Testes
B
Ovary
C
A and B both
D
None of the above
Answer :
A and B both
60. Various changes in mammalian sperm which prepare it to fertilize the ovum are called
A
Capacitation
B
Regeneration
C
Growth
D
None of the above
Answer :
Capacitation