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Quiz 10
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Q.1
Bacteria and fungi are .... .... [C.P.M.T.2003]
0%
a) Scavengers
0%
b) Primary consumers
0%
c) Secondary consumers
0%
d) Decomposers
Explanation
Answer : (d)
Q.2
Pseudomonas is an important component of nitrogen cycle. It .... ....
0%
a) Fixes elemental nitrogen
0%
b) Produces elemental nitrogen
0%
c) Transfers nitrogen
0%
d) Changes ammonium nitrogen to nitrate state
Explanation
Answer : (b)
Q.3
The trophic level of herbivores animal is ..... ..... [Pb.P.M.T.2003]
0%
a) First
0%
b) Second
0%
c) Third
0%
d) intermediate
Explanation
Answer : (b)
Q.4
Ultimate source of energy for living beings is .... .... [C.P.M.T.2001]
0%
a) Carbohydrates
0%
b) Fats
0%
c) Sunlight
0%
d) ATP
Explanation
Answer : (c)
Q.5
An ecosystem does not normally alter because it is an state of .... ..... [A.F.M.C.1997]
0%
a) Homeostasis
0%
b) Imbalance
0%
c) Deficient light
0%
d) Deficient components
Explanation
Answer : (a)
Q.6
An ecosystem contains .... .... [D.P.M.T.1999]
0%
a) Producers
0%
b) Consumers
0%
c) decomposers
0%
d) All the above
Explanation
Answer : (d)
Q.7
The pyramid which cannot be inverted in a stable ecosystems is that of .... ..... [B.H.U.2008]
0%
a) Biomass
0%
b) Number
0%
c) Energy
0%
d) All the above
Explanation
Answer : (c)
Q.8
Rate of storage of organic matter not used by heterotrophs is termed as .... ....
0%
a) Net productivity
0%
b) Net primary productivity
0%
c) Gross primary productivity
0%
d) Secondary productivity
Explanation
Answer : (b)
Q.9
Pollution from animals excreta and organic waste from kitchen can most probably minimized by .... .... [A.I.I.MS. 2006]
0%
a) Storing the in underground storage tanks
0%
b) Using them producing biogas
0%
c) Vermiculture
0%
d) Using them directly as biofertilizers
Explanation
Answer : (c)
Q.10
Energy store at the consumer level is .... ..... [M.P.P.M.T.2001]
0%
a) Gross primary productivity
0%
b) net primary productivity
0%
c) Net productivity
0%
d) Secondary productivity
Explanation
Answer : (c)
Q.11
Choose the correct sequence .... ..... [Manipal 2002]
0%
a) Phytoplankton → fishes → zooplankton → crustaccean
0%
b) Zooplankton → phytoplankton → crustaccean → fishes
0%
c) Phytoplankton → zooplankton → crustaccean → fishes
0%
d) Fishes → crustaccean → phytoplankton → zooplankton
Explanation
Answer : (c)
Q.12
More than 70% of world’s fresh water is contained in .... .... [C.B.S.E 2005]
0%
a) Polar ice
0%
b) Antarctica
0%
c) Green land
0%
d) Glaciers and mountains
Explanation
Answer : (a)
Q.13
Best source of renewable energy is .... .... [M.P.P.M.T.1995]
0%
a) Cattle
0%
b) Petroleum
0%
c) Coal
0%
d) Trees
Explanation
Answer : (d)
Q.14
Minerals and metals are .... .... [C.B.S.E. 1992]
0%
a) Biodegradable resources
0%
b) Renewable
0%
c) Nonrenewable
0%
d) Renewable and nonrenewable resources
Explanation
Answer : (d)
Q.15
Relative to roots, the shoots are massive in plants of .... .... [C.P.M.T. 1992]
0%
a) Desert
0%
b) Moist temperature
0%
c) Tundra
0%
d) Moist tropical forests
Explanation
Answer : (d)
Q.16
Tip of an ecological pyramid is occupied by .... .... [M.P.P.M.T.1999]
0%
a) Predator
0%
b) herbivores
0%
c) Carnivores
0%
d) None
Explanation
Answer : (c)
Q.17
Tropical plants prosopis, acacia and capparis .... .... [C.B.S.E.1998]
0%
a) Evergreen forest
0%
b) Deciduous forest
0%
c) Grassland
0%
d) Thorn forest
Explanation
Answer : (d)
Q.18
In ecosystem, cycling of nutrients is called .... ... [A.M.U.2010]
0%
a) Geological cycle
0%
b) Biogeochemical cycle
0%
c) Geochemical cycle
0%
d) Chemical cycle
Explanation
Answer : (b)
Q.19
Supply of oxygen to biogas plant will cause
0%
a) Positive effect
0%
b) Negative effect
0%
c) No effect
0%
d) None
Explanation
Answer : (b)
Q.20
Frog feeding on herbivorous insect is ..... ..... [C.B.S.E.2000]
0%
a) Primary consumer
0%
b) Secondary consumer
0%
c) Tertiary consumer
0%
d) Top carnivore
Explanation
Answer : (b)
Q.21
Afforestation in relation to urban development is component of .... .... [Pb .PM.T. 2000]
0%
a) Social forestry
0%
b) Integrated forest development
0%
c) Agroforestry
0%
d) Fuel forestry
Explanation
Answer : (b)
Q.22
Highest value in g/m2/yr of a grassland ecosystem would be .... .... [C.B.S.E.2004]
0%
a) Gross primary production
0%
b) ssNet primary production
0%
c) Secondary production
0%
d) Tertiary production
Explanation
Answer : (a)
Q.23
Pyrolysis of wood occurs in .... .... [M.H.T.C.E.T.2007]
0%
a) Presence of air
0%
b) Absence of air
0%
c) Limited supply of air
0%
d) Both B and C
Explanation
Answer : (b)
Q.24
Major fuel content of biogas is .... .... [C.B.S.E. 2004]
0%
a) CO
0%
b) CO2
0%
c) CH4
0%
d) CH3
Explanation
Answer : (c)
Q.25
The forest that colours in autumn is .... ..... [C.P.M.T.1992]
0%
a) Temperate evergreen forest
0%
b) Temperate deciduous forest
0%
c) Tropical evergreen forest
0%
d) Tropical deciduous forest
Explanation
Answer : (d)
Q.26
which is not recycled in ecosystem .... ..... [B.H.U. 2012]
0%
a) Nitrogen
0%
b) Water
0%
c) Energy
0%
d) Oxygen
Explanation
Answer : (c)
Q.27
Types of food chains are .... .... [M.P.P.M.T.2001]
0%
a) Four
0%
b) Three
0%
c) Two
0%
d) Six
Explanation
There are two types of food chains: Predator (Grazing) food chain, beginning with autotrophs, and the detrital food chain, beginning with dead organic matter Answer : (c)
Q.28
Biodiesel is got from .... .... [Odisha 2006]
0%
a) Cedrus
0%
b) Jatropha biloba
0%
c) Jatropha curcas
0%
d) None
Explanation
Answer : (c)
Q.29
Wildlife (Protection) Act of India was enacted in .... .... [Odisha 2003]
0%
a) 1952
0%
b) 1962
0%
c) 1972
0%
d) 1982
Explanation
Answer : (c)
Q.30
Food chain in which microorganisms breakdown the food formed by primary producers is ..... ..... [C.B.S.E.1991]
0%
a) Parasitic food chain
0%
b) Detritus food chain
0%
c) Consumer food chain
0%
d) Predator food chain
Explanation
Answer : (b)
0 h : 0 m : 1 s
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