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Free Download as PDF of the detailed solutions for class 12 Biology from NCERT or CBSE text book as per exam pattern, to help you in day to day learning. We provide all important questions and answers from chapter Human Reproduction of Biology.
31
If after ovulation no pregnancy result the corpus luteum
[1]
Is maintained by the presence of progesterone
[2]
Degenerates in a short time
[3]
Becomes active and secretes lot of FSH and LH
[4]
Produces lot of oxytocin and relaxin
Answer: Degenerates in a short time
32
The process of delivery of the foetus is called
[1]
Parturition
[2]
Implantation
[3]
Fertilisation
[4]
Lactation
33
Which of the following character is seen in male?
[1]
Muscles are comparitively weak
[2]
Voice is shrill
[3]
Voice is heavy
[4]
eard and mustache is not seen
34
Which cells provides nutrition to the sperms ?
[1]
Germinal cells
[2]
Epithelial cell
[3]
Sertoli cell
[4]
None of them
35
Where is situated epididymis ?
[1]
External surface of the testis
[2]
Below the testis
[3]
Internal surface of the testis
[4]
Above the testis
Answer: External surface of the testis
36
Through which of the following vas deferens runs upward from epididmis and enter the abdominal cavity ?
[1]
Ejaculatory duct
[2]
Inguinal canal
[3]
Urethra
[4]
(1) and (2) both
37
Where is prostate gland is located ?
[1]
Over urinary bladder
[2]
Base of the urinary bladder
[3]
Posterior region of the urinary
[4]
Side of the urinary bladder
Answer: Posterior region of the urinary
38
What is the function of bulbourethral gland secretion ?
[1]
Nourishes sperms
[2]
role in activating sperms
[3]
Serves as a lubricant during sexual intercourse
[4]
Enhancing the motility of sperms
Answer: Serves as a lubricant during sexual intercourse
39
When does penis get erected ?
[1]
If masses of tissue filled with air
[2]
If masses of tissue filled with hormones
[3]
If masses of tissue filled with blood
[4]
(b) and (c) occurs both
Answer: If masses of tissue filled with blood
40
What is the entry point for blood vessel and nerves into the ovaries called ?
[1]
Hilus part
[2]
Hilus pors
[3]
Hilus
[4]
None of them
41
Which tissue layer of tunica albuginea
[1]
Connective tissue
[2]
Epithelial tissue
[3]
Collagenous connective tissue
[4]
Collagenous epithelium tissue
Answer: Collagenous connective tissue
42
What is length of fallopion tube ?
[1]
12 m.m
[2]
10 c.m
[3]
10 m.m
[4]
12 c.m
43
The wall of the uterus is made of ..........layer .
[1]
Three
[2]
Two
[3]
one
[4]
Four
44
Which region of vulva are located below the mons pubis ?
[1]
Labia majora
[2]
Labia minora
[3]
Clitoris
[4]
None of this
45
In spermatogenesis which cells are produce at the end of multiplication phase ?
[1]
Primary spermatocyte
[2]
Secondary spermatocyte
[3]
Spermatogonia
[4]
Spermatids
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