- Which one of the following statements is not true with
respect to viability of mammalian sperm?
(a) Viability of sperm is determined by its motility.
(b) Sperms must be concentrated in a thick suspension.
(c) Sperm is viable for only upto 24 hours.
(d) Survival of the sperm depends on the pH of the medium
and it is most active in alkaline pH.
(J & K CET, AIPMT Prelims 2012)
- The testes in humans are situated outside the abdominal cavity
inside a pouch called scrotum. The purpose served is for
(a) maintaining the scrotal temperature lower than the
internal body temperature
(b) escaping any possible compression by the visceral organs
(c) providing more space for the growth of epididymis
(d) providing a secondary sexual feature for exhibiting the
male sex. (AIPMT Prelims 2011)
- Secretions from which one of the following are rich in
fructose, calcium and some enzymes?
(a) Male accessory glands (b) Liver
(c) Pancreas (d) Salivary glands
(AIPMT Mains 2010)
- Sertoli cells are found in
(a) ovaries and secrete progesterone
(b) adrenal cortex and secrete adrenaline
(c) seminiferous tubules and provide nutrition to germ cells
(d) pancreas and secrete cholecystokinin.
(AIPMT Prelims 2010)
- Given below is a diagrammatic sketch of a portion of human
male reproductive system. Select the correct set of the names
of the parts labelled A, B, C and D.
A B
C
D
(a) A-vas deferens, B-seminal vesicle, C-prostate,
D-bulbourethral gland
(b) A-vas deferens, B-seminal vesicle, C-bulbourethral
gland, D-prostate
(c) A-ureter, B-seminal vesicle, C-prostate, D-bulbourethral
gland
(d) A-ureter, B-prostate, C-seminal vesicle, D-bulbourethral
gland (AIPMT 2009)
Assertion & Reason
The following questions consist of two statements each : assertion
(A) and reason (R). To answer these questions, mark the correct
alternative as directed below :
(a) If both A and R are true and R is the correct explanation of A.
Unscramble the words given in column I and match them with their explanations in column II.
Column I Column II
- ENROTPIA (a) Superficial outgrowths of lichens, primarily meant for increasing
surface area and photosynthetic activity.
- LITISCOBIS (b) A condition characterised by difficulty in swallowing.
- DAXECU (c) A crystalline alkaloid obtained from deadly nightshade plant used for
dilating the pupil during eye examinations.
- OHALDNICR (d) A genetic element that can replicate independently of its host cell's
chromosome or as a part of chromosomes.
- TETUELBN (e) Unbranched, erect and stout cylindrical stem having scars and
remnants of fallen leaves.
- YPERHTURM (f) A mild CNS stimulant containing alkaloid arecoline which stains the
teeth and gum red.
- DISIAI ( g) Natural insecticides obtained from the Chrysanthemum plant that is
used in mosquito coils and fly sprays.
- SPYCIRS (h) A trait showing inheritance only from father to son.
- HADIAYPGS (i) A technique in which gold particles coated with foreign DNA are
bombarded into target cells at a very high velocity.
- OSEEPMI ( j ) The ability of an animal that helps it to camouflage in natural
environment.
U N S C R M E
A
M B L E
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Winners’ names will be published in next issue.
