|
179. Which one of the following pairs is
not correctly matched
a) Vitamin B6 - Loss of appetite
b) Vitamin B1 - Beri-beri
c) Vitamin B2 - Pellagra
d) Vitamin B12 - Pernicious anaemia
Ans:a
180. One of the following is a very unique
feature of the mammalian body
a) Presence of diaphragm
b) Four chambered heart
c) Rib cage
d) Homeothermy
Ans:a
181. Chemically hormones are
a) Proteins, steroids and biogenic amines
b) Proteins only
c) Steroids only
d) Biogenic amines only
Ans:a
182. When a fresh-water protozoan
possessing a contractile vacuole, is placed in a
glass containing marine water, the vacuole will
a) Disappear b) Increase in size
c) Decrease in size d) Increase in number
Ans:a
183. One of the parents of a cross has a
mutation in its mitochondria. In that cross, that
parent is taken as a male. During segregation of
F2 progenies that mutation is found in
a) None of the progenies
b) All the progenies
c) Fifty percent of the progenies
d) One - third of the progenies
Ans:a
184. An ecosystem which can be
easily damaged but can recover after some time if damaging effect stops will be having
a) High stability and low resilience
b) Low stability and low resilience
c) High stability and high resilience
d) Low stability and high resilience
Ans:d
|
185. In which one of the following pairs is
the specific characteristic of a soil not
correctly matched
a) Terra rossa - Most suitable for roses
b) Chernozems - Richest soil in the world
c) Black soil - Rich in calcium carbonate
d) Laterite - Contains aluminium compound
Ans:c
186. Recently Govt. of India has allowed
mixing of alcohol in petrol. what is the amount of alcohol permitted for mixing in petrol
a) 10 - 15 % b) 10 %
c) 5 % d) 2.5 %
Ans:c
187. In a longitudinal section of a root,
starting from the tip upward, the four zones occur
in the following order
a) Root cap, cell division, cell
maturation, cell enlargement
b) Cell division, cell enlargement,
cell maturation, root cap
c) Cell division, cell maturation,
cell enlargement, root cap
d) Root cap, cell division, cell
enlargement, cell maturation
Ans:d
188. Presence of gills in the tadpole of
frog indicates that
a) Fishes evolved from frog-like ancestors
b) Frogs will have gills in future
c) Frogs evolved from gilled ancestors
d) Fishes were amphibious in the past
Ans:d
189. In
oogamy, fertilization involves
a) A large non-motile female gamete and
a small motile male gamete
b) A large non-motile female gamete and
a small non-motile male gamete
c) A large motile female gamete and a
small non-motile male gamete
d) A small non-motile female gamete and
a large motile male gamete
Ans:a |
