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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.
211
The type of connective tissue that is associated with the Umbilical cord is:
[1]
Adipose connective tissue
[2]
Jelly-like connective tissue
[3]
Areolar connective tissue
[4]
Reticular connective tissue
Answer: Jelly-like connective tissue
212
1 Cells of corona radiata remain grouped together by
[1]
Pectins
[2]
Lipids
[3]
Hyaluronidase
[4]
Hyaluronic acid
213
Capacitation of sperm occurs in
[1]
Vagina
[2]
Female genital tract
[3]
Vas efferens
[4]
Vas deferens
Answer: Female genital tract
214
When released from ovary, human egg contains
[1]
One Y chromosome
[2]
Two X chromosomes
[3]
One X chromosome
[4]
XY chromosome
215
Which one of the following statement is correct?
[1]
Spermatogenesis is the formation of sperm cells.
[2]
Spermatogenesis occurs in the seminiferous tubules
[3]
Follicle-stimulating hormone (FSh) indirectly stimulates spermatogenesis.
[4]
All of these are correct
Answer: All of these are correct
216
Corpus luteum secretes hormone
[1]
Estrogen
[2]
Progesterone
[3]
FSH
[4]
LH
217
Which one of the followings is incorrectly matched regarding male reproductive organs?
[1]
Testes: Sperm and sex hormones are produced
[2]
Epididymis: Ducts where sperm mature
[3]
Prostate gland: Contributes fluid to semen
[4]
Urethra: Contributes nutrients and mucus-containing fluid to semen
Answer: Urethra: Contributes nutrients and mucus-containing fluid to semen
218
Corpus luteum develops under the influence of
[1]
Progesterone
[2]
Estrogen
[3]
FSH
[4]
LH
219
Cells of Leydig occur in
[1]
Liver
[2]
Ovary
[3]
Testis
[4]
Spleen
220
Correct sequence of embryo development:
[1]
Gamete → Zygote → Morula → Blastula → Gastrula
[2]
Gamete → Zygote → Blastula → Morula → Gastrula
[3]
Gamete → Neurula → Gastrula
[4]
Gamete → Neurula → Morula
Answer: Gamete → Zygote → Morula → Blastula → Gastrula
221
The chemical substance released by activated spermatozoa that acts on the ground substances of the follicle cells is known as
[1]
Progesterone
[2]
Hyaluronidase
[3]
Relaxin
[4]
Gonadotropin
222
Human seminal plasma, the fluid part of semen, is produced by contributions from the:
I. Urethra
II. Prostate
III. Seminal vesicle
IV. Bulbourethral gland
[1]
I and III
[2]
I and IV
[3]
I, III and IV
[4]
II, III and IV
223
Accessory genital gland found only in males is
[1]
Cowper’s gland
[2]
Bartholin’s gland
[3]
Perineal gland
[4]
Prostate gland
224
Which one of the following events occurs in luteal phase (or secretory phase) of the menstrual cycle?
[1]
Follicle-stimulating hormone (FSH) secretion begins
[2]
Follicle maturation takes place
[3]
Corpus luteum forms
[4]
Endometrium breaks down
Answer: Corpus luteum forms
225
Usually the first movements of the foetus and appearance of hair on its head are usually observed during which month of pregnancy?
[1]
Third month
[2]
Fourth month
[3]
Fifth month
[4]
Sixth month
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