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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.
(16)
Which is part of vulva is considered equivalent to the male penis
[1]
Clitoris
[2]
Hymen
[3]
Mons
[4]
Pubis
(17)
Which cells produces of spermatids ?
[1]
Secondary germinal cells
[2]
Spermatogonium
[3]
Primary germinal cells
[4]
Spermatocytes
Answer: Primary germinal cells
(18)
In spermatogenesis which processes occur for secondary spermatocyte ?
[1]
Mitotic
[2]
Meiosis
[3]
Amitosis
[4]
(1) and (2) both
(19)
The acrosome is formed by the.....
[1]
Mitochondria
[2]
Golgicomplex
[3]
Ribosomes
[4]
Nucleus
(20)
In oogenesis which cells are produced at the first division of primary oocyte in maturation phase ?
[1]
Secondary oocyte
[2]
First polar body
[3]
Secondary polar body
[4]
(1) and (2) both
21
The events of menstrual cycle are comprised of .... days.
[1]
27 days
[2]
29 days
[3]
28 days
[4]
30 days
22
In menstrual cycle during which days rising estrogen levels ?
[1]
1 to 5 days
[2]
14 to 15 days
[3]
15 to 28 days
[4]
6 to 14 days
23
In fertilization which part of sperm enters the secondary oocyte ?
[1]
Tail
[2]
Head
[3]
Middle part
[4]
(2) and (3) both
24
The division of it forms in to 16 daughter cells..called....
[1]
Blasto cell
[2]
Blastomeres
[3]
Morula
[4]
(1) and (2) both
25
In humans after implantation what is the elaborate projection developed from trophoblast called ?
[1]
Embryonic Layer
[2]
Placenta
[3]
Chorionic vili
[4]
Umbilical cord
26
Which part present between placenta and embryo ?
[1]
Umbilical cord
[2]
Amniotic cavity
[3]
Embryonic disc
[4]
(2) and (3) both
27
How much blood is lost during menstrual cycle period ?
[1]
25 to 100 ML
[2]
50 to 150 ML
[3]
75 to 175 ML
[4]
20 to 75 ML
28
Which is incorrect for sexual dimorphism of male ?
[1]
Mammary gland is namesake only
[2]
Voice is shrill
[3]
Muscle are strong
[4]
Beard and mustache develops
29
Identify the part-a
[1]
Spermatid
[2]
Secondary spermatocyte
[3]
Primary Spermatocyte
[4]
Sertoli cell
Answer: Secondary spermatocyte
30
In human the unpaired male reproductive structure is ... ...
[1]
Seminal vesicle
[2]
Prostate
[3]
Bulbourethral gland
[4]
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