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Neet Biology Ecosystem Mcq
Quiz 5
Solution
Q.1.
Relationship between different organisms can best be studied by .... .... [D.P.M.T.2001]
75%
a) Food webs
12%
b) Pyramid of mass
12%
c) Pyramid of energy
0%
d) Eltonian pyramids
Q.2.
Soil fertility is reduced by .... .... [C.B.S.E. 1992]
0%
a) Crop rotation
17%
b) Nitrogen fixing bacteria
17%
c) Decaying organic matter
67%
d) Intensive agriculture
Q.3.
Green plants constitute ..... ..... [M.P.P.M.T.1999]
80%
a) First trophic level
0%
b) Second trophic level
20%
c) Third trophic level
0%
d) Fourth trophic level
Q.4.
An inverted pyramid of numbers and an inverted pyramid of biomass are respectively seen in .... .... [Kerala 2012]
17%
a) Grassland tree ecosystem
50%
b) Sea and tree ecosystem
33%
c) tree and sea ecosystem
0%
d) Tree and grassland ecosystem
Q.5.
Biological equilibrium is equilibrium amongst .... ..... [BiharP.M.T.2001]
0%
a) Producers and decomposers
50%
b) Producers and consumers
50%
c) Producers and decomposers, consumers
0%
d) Consumers and decomposers
Q.6.
Para rubber is obtained from the latex of .... .... [J.K.C.M.E.E. 2007]
0%
a) Ficus elastica
40%
b) Hevea brasiliensis
20%
c) Carica papaya
40%
d) Musa paradisiaca
Q.7.
Second most important trophic level in a lake is ..... ..... [C.B.S.E.1994]
25%
a) Zooplankton
50%
b) Phytoplankton
25%
c) Benthos
0%
d) Neuston
Q.8.
Nitrates are transformed into nitrogen by .... .... [C.P.M.T.2003]
20%
a) Ammonifying bacteria
60%
b) Nitrifying bacteria
0%
c) Denitrifying bacteria
20%
d) Both A and B
Q.9.
Planting of trees, shrubs and others in between crops plants for stabilization of soil is .... .... [M.H. T.C.E.T. 2008]
0%
a) Taungya
33%
b) Soil forestry
0%
c) Production plantation
67%
d) Agroforestry
Q.10.
In an ecosystem, bacteria are .... ..... [M.P.P.M.T.1997]
75%
a) Microconsumers.
0%
b) Macroconsumers
25%
c) Primary consumers
0%
d) Secondary consumers
Q.11.
Pyramid of numbers in grass ecosystem is .... .... [B.H.U.2002]
33%
a) Linear
0%
b) Upright
67%
c) Inverted
0%
d) Negative
Q.12.
Removal of top fertile soil by wind or water is .... .... [B.H.U. 1991]
0%
a) Siltation
25%
b) Soil erosion
50%
c) Weathering of soil
25%
d) Leaching
Q.13.
Lion is .... .... [E.A.M.C.E.T.1995]
0%
a) Producer
67%
b) Primary consumer
0%
c) Predator
33%
d) Secondary consumer
Q.14.
An antiforest measure is .... .... [Pb.P.M.T. 2003]
33%
a) Afforestation
0%
b) Selective grazing
67%
c) Clearing forest
0%
d) Selective felling
Q.15.
Role of bacteria in carbon cycle is .... .... [C.B.S.E.1998]
0%
a) Photosynthesis
33%
b) Chemosynthesis
67%
c) Breakdown of organic compounds
0%
d) Assimilation of nitrogen compounds
Q.16.
Sal forest is a ..... ..... [Pb.P.M.T.1998]
33%
a) Deciduous forest
33%
b) Evergreen forest
33%
c) Rain forest
0%
d) None
Q.17.
In a food chain, man is .... ..... [C.P.M.T.1993]
67%
a) Primary and Secondary consumers
0%
b) Primary consumers
33%
c) Secondary consumers
0%
d) Producers
Q.18.
An easily disturbed ecosystem which can recover after some time after the stoppage of damaging factor is .... .... [C.B.S.E.2004]
33%
a) Lower stability and high resilience
0%
b) Lower stability and low resilience
67%
c) Higher stability and high resilience
0%
d) Higher stability and low resilience
Q.19.
Which is false about food chain .... .... [Kerala 2011]
33%
a) Grazing food chain is major conduit of energy for a aquatic ecosystem
33%
b) In terrestrial ecosystem, large fraction of energy flows through detritus food chain
33%
c) Primary consumers belong to first trophic level
0%
d) Cockroaches and crows are omnivores
Q.20.
Amount of energy transferred from one tropic level to next is .... ..... [C.P.M.T.2008]
67%
a) 1.5%
33%
b) 10%
0%
c) 15%
0%
d) 20%
Q.21.
Ten percent law of energy transfer in food chain was given by .... .... [C.E.T.Chd2010]
33%
a) Elton
0%
b) Haeckel
33%
c) Lindeman
33%
d) Schimper
Q.22.
Amount of alcohol allowed to be mixed with petrol in India is .... .... [C.B.S.E. 2004]
33%
a) 2.5%
0%
b) 5%
0%
c) 10%
67%
d) 5-10%
Q.23.
Who proposed the concept of ecological pyramids? .... .... [C.E.T.Chd.1997]
0%
a) Odum
33%
b) Elements
67%
c) Tansley
0%
d) Elton
Q.24.
Petroleum is a .... .... [C.B.S.E. 1992]
0%
a) Synthetic product
0%
b) Renewable resource
100%
c) Nonrenewable resource
0%
d) Inconvenient resources
Q.25.
Most vital process for existence of life on earth is .... ..... [E.A.M.C.E.T.1999]
67%
a) Reproduction of plants and animals
0%
b) Respiration of animals
33%
c) Photosynthesis by plants
0%
d) Communication in animals
Q.26.
Total amount of living material at various level of a food chain is depicated by .... .... [D.P.M.T.1999]
0%
a) Pyramid of energy
0%
b) Pyramid of numbers
0%
c) Pyramid of biomass
100%
d) All the above
Q.27.
Desert biome does not support much vegetation as it lacks
0%
a) Sufficient light
100%
b) Favourable temperature
0%
c) Sufficient water
0%
d) Sufficient nutrients
Q.28.
Minimum components needed for an ecosystem to survive are .... .... [D.P.M.T.2011]
0%
a) Producers and primary consumer
50%
b) Producers and primary carnivores
0%
c) Producers and decomposers
50%
d) Producers and decomposers, consumers
Q.29.
Which is a non –renewable resource ? .... ..... [Kerala 2009]
0%
a) Water
0%
b) Forest
100%
c) Mineral
0%
d) Solar energy
Q.30.
A food chain comprises .... .... [M.P.P.M.T.2000]
50%
a) Producers, herbivores and carnivores
0%
b) Producers, consumers and decomposer
50%
c) Producers and primary consumers
0%
d) Producers, carnivores and decomposers
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