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12-Biology-Exemplar-Chapter-3
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HUMAN REPRODUCTION 17CHAPTER 3
HUMAN REPRODUCTION
MULTIPLE-CHOICE QUESTIONS
1. Choose the incorrect statement from the following:
a. In birds and mammals internal fertilisation takes place
b. Colostrum contains antibodies and nutrients
c. Polyspermy is prevented by the chemical changes in the egg surface
d. In the human female implantation occurs almost seven days after
fertilisation
2. Identify the wrong statement from the following:
a. High levels of estrogen triggers the ovulatory surge.
b. Orgonial cells start to proliferate and give rise to functional ova in
regular cycles from puberty onwards.
c. Sperms released from seminiferous tubules are poorly motile /
non-motile.
d. Progesterone level is high during the post ovulatory phase of
menstrual cycle.
3. Spot the odd one out from the following structures with reference to the
male reproductive system:
a. Ret testis
b. Epididymis
c. Vasa efferentia
d. Isthmus
4. Seminal plasma, the fluid part of semen, is contributed by.
i. Seminal vesicle
ii. Prostate
iii. Urethra
iv. Bulbourethral gland
(a) i and ii (b) i, ii and iv (c) ii, iii and iv (d) i and iv
, 18 BIOLOGY, EXEMPLAR PROBLEMS
5. Spermiation is the process of the release of sperms from:
a. Seminiferous tubules
b. Vas deferens
c. Epididymis
d. Prostate gland
6. Mature Graafian follicle is generally present in the ovary of a healthy
human female around stet:
a. 5 – 8 day of menstrual cycle
b. 11 – 17 day of menstrual cycle
c. 18 – 23 day of menstrual cycle
d. 24 – 28 day of menstrual cycle
7. Acrosomal reaction of the sperm occurs due to:
a. Its contact with zona pellucida of the ova
b. Reactions within the uterine environment of the female
c. Reactions within the epididymal environment of the male
d. Androgens produced in the uterus
8. Which one of the following is not a male accessory gland?
a. Seminal vesicle
b. Ampulla
c. Prostate
d. Bulbourethral gland
9. The immature male germ cell undergo division to produce sperms by the
process of spermatogenesis. Choose the correct one with reference to above.
a. Spermatogonia have 46 chromosomes and always undergo meiotic
cell division
b. Primary spermatocytes divide by mitotic cell division
c. Secondary spermatocytes have 23 chromosomes and undergo
second meiotic division
d. Spermatozoa are transformed into spermatids
10. Match between the following representing parts of the sperm and their
functions and choose the correct option.
Col. A Col. B
A. Head i. Enzymes
B. Middle piece ii. Sperm motility
C. Acrosome iii. Energy
D. Tail iv. Genetic material
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