Biology Times March 19
- In which ART technique the semen is artificially
introduced into the female
(a) GIFT (b) IUI
(c) IUT (d) ET
- In which condition the motility of sperm is highly
reduced?
(a) Polyspermy (b) Azoospermia
(c) Oligospermia (d) Asthenospermia
- Match the following
(P) Weismann i) Father of evolutionary
idea
(Q) Sewall Wright ii) Random genetic drift
(R) Aristotle iii) Germplasm theory
(S) Darwin iv) Environment is
responsible for evolution
(a) P-ii, Q- iii, R-i, S-iv
(b) P-iv, Q-ii, R-i, S-iii
(c) P- iii, Q-ii, R- iv, S- i
(d) P-iii, Q-iv, R-i, S-ii
- What does the given image depicts?
(a) Variety of beaks of Darwins finches
(b) Variety of birds of African island
(c) Variety of beaks of finches found in
Galapagos Island.
(d) Both (a) and (c)
- In primordial atmosphere when the living
organism evolved the respiration process was
(a) Aerobic as it was more complex
(b) Anaerobic because early atmosphere
contained little or no oxygen
(c) Aerobic as it released more energy
(d) Anaerobic as it released more energy
- Ascaris lumbricoides lives in the intestine of
(a) Sheep and goat (b) Monkey
(c) Homo sapiens (d) Pig
- At which stage of HIV infection does one usually
show symptoms of AIDS?
(a) Within 15 days of sexual contact with an
infected person
(b) When the infected retro virus enters host
cells
(c) When HIV damages large number of
T-lymphocytes
(d) When the viral DNA is produced by reverse
tanscriptase
- The major phagocytic cells are
(a) Lymphocytes (b) Mast cells
(c) Macrophages (d) Plasma cells
- The base of an age pyramid is represented by
(a) reproductive age group
(b) post reproductive age group
(c) pre reproductive age group
(d) dead organisms
- A biotic relationship between two different
organisms which one receives benefit at the cost
of other’s life is called
(a) parasitism (b) predation
(c)scavenging (d) commensalism
- Association between Hydractinia and the Pagurus
is
(a) Commensalism (b) Mutualism
(c) Parasitism (d) Predation
36 .Which ecosystem has the maximum biomass?
(a) Grassland ecosystem
(b) Pond ecosystem
(c) Lake ecosystem
(d) Forest ecosystem
37.The functional efficiency of ecosystem is effected
when decomposers are removed from it, because
(a) Flow of nutrients will stop
(b) Energy flow will stop
(c) Decomposition of other components gets
faster
(d) None of the above
- Pyramid of energy is always upright which
indicates that
(a) Producers have lowest energy conversion
efficiency
(b) Energy conversion efficiency is same for
all trophic levels.
(c) Herbivores have better energy conversion
efficiency than carnivores.
(d) Carnivores have better efficiency than
herbivores
- One of the ex situ conservation methods for
endangered species is:
(a)Wildlife Sanctuaries
(b)Biosphere reserves
(c)Cryopreservation
(d)National parks
