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Quiz 13
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Q.1
Which atom is limiting the primary productivtiy mostly .... .... [Odisha 2008]
0%
a) P
0%
b) O
0%
c) C
0%
d) N
Explanation
Answer : (c)
Q.2
An agrostological methods of soil conservation is .... .... [K.C.E.T. 2008]
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a) Terracing
0%
b) Mulching
0%
c) Basin listing
0%
d) Dry farming
Explanation
Answer : (d)
Q.3
Biome with broad-leaved resinous fire resistant drought enduring plants is .... .... [A.I.I.M.S.1996]
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a) Savannah
0%
b) Steppes
0%
c) Chaparral
0%
d) Deciduous forest
Explanation
Answer : (c)
Q.4
LP.G. is ? .... .... [A.M.U. 1998]
0%
a) Low price gas
0%
b) Fossil fuel
0%
c) Low pressure gas
0%
d) Biogas
Explanation
Answer : (b)
Q.5
Alpine forests of Himalayas have .... .... [M.P.P.M.T. 1991]
0%
a) Tall evergreen coniferous trees
0%
b) Tall board - leaved evergreen trees
0%
c) Tall broad - leaved deciduous trees
0%
d) Dwarf shrubby plants
Explanation
Answer : (d)
Q.6
Zooplanktonic forest are .... .... [M.P.P.M.T.1999]
0%
a) Primary producers
0%
b) Carnivores
0%
c) Primary consumers
0%
d) Secondary consumers
Explanation
Answer : (a)
Q.7
Ecosystem creates .... .... [M.P.P.M.T.1993]
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a) Food chains and food web
0%
b) Food web
0%
c) Habitats
0%
d) None of the above
Explanation
Answer : (a)
Q.8
In grazing food chain, carnivores are .... ...[Kerala 2011]
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a) Primary producers
0%
b) Secondary producers
0%
c) Primary consumers
0%
d) Secondary consumers
Explanation
Answer : (d)
Q.9
An exhaustible renewable resources is .... ..... [M.H.T.C.E.T. 2009]
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a) Coal
0%
b) Solar energy
0%
c) Water
0%
d) Petroleum
Explanation
Answer : (c)
Q.10
Efficiency of energy transfer from one trophic level to the higher trophic level is called .... .... [E.A.M.C.E.T. 2008]
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a) Assimilation efficiency
0%
b) Exploitation efficiency
0%
c) Lindeman's trophic efficiency rule
0%
d) Gross primary producers
Explanation
Answer : (c)
Q.11
Sequence of species through which organism food passes in a community is called .... ..... [Odisha 2007]
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a) Food chain
0%
b) Ecosystem
0%
c) Population
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d) Ecological pyramid
Explanation
Answer : (a)
Q.12
Crop rotation helps in .... .... [B.H.U. 2006]
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a) Increase in soil fertility
0%
b) Decrease in soil fertility
0%
c) Decrease in soil erosion
0%
d) Decrease water loss
Explanation
Answer : (a)
Q.13
Benthos of pond ecosystem are .... .... [E.A.M.C.E.T.1995]
0%
a) Producers
0%
b) Primary consumers
0%
c) Secondary consumers
0%
d) Tertiary consumers
Explanation
Answer : (b)
Q.14
Seeds of which plant are called "black pearls" .... ..... [Manipur 2009]
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a) Piper nigrum
0%
b) Argemone mexicana
0%
c) Elettaria cardamomum
0%
d) Coffea arabica
Explanation
Answer : (a)
Q.15
During adverse season, therophytes survive through .... .... [C.B.S.E.1997]
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a) Seeds
0%
b) Bulbs
0%
c) Rhizomes
0%
d) Corms
Explanation
Answer : (a)
Q.16
Food wen refers to .... .... [ Chd . C.E.T. 2012]
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a) Transfer of energy from one to next trophic level
0%
b) Unidirectional energy flow
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c) Capturing solar energy by autotrophs
0%
d) Connected feeding patterns in a biotic community
Explanation
Answer : (d)
Q.17
Suppose all the bacteria and fungi are destroyed. What will happen .... .... [C.P.M.T.1988]
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a) There will be no disease and death
0%
b) No antibiotics would becme available
0%
c) Dead bodies and excretions will pile up
0%
d) Soil will become depleted of all nutrients
Explanation
Answer : (d)
Q.18
Large woody vines are more commonly found in .... .... [C.B.S.E.2011]
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a) Tropical rain forests
0%
b) Alpine forest
0%
c) Temperate forest
0%
d) Mangroves
Explanation
Answer : (a)
Q.19
Relatively more abundant animals of desert ecosystem are .... ..... [C.B.S.E.1998]
0%
a) Arboreal
0%
b) Fossorial
0%
c) Diurnal
0%
d) Aquatic
Explanation
Answer : (b)
Q.20
Species diversity is lowest in ecosystem .... .... [Manipal1997]
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a) Desert
0%
b) Tundra
0%
c) Grassland
0%
d) Deciduous forests
Explanation
Answer : (b)
Q.21
Conversion of organic nitrogenous compounds .... ..... [A.M.U.2002]
0%
a) Nitrification
0%
b) Denitrification
0%
c) Ammonification
0%
d) Denaturation
Explanation
Answer : (c)
Q.22
Soil erosion can be prevented by .... .... [D.P.M.T. 1997]
0%
a) Restricted human activity
0%
b) Good plant cover
0%
c) Checking movement of animals
0%
d) Wind screen alone
Explanation
Answer : (b)
Q.23
Which pair is mismatched .... .... [C.B.S.E.2005]
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a) Tundra - permafrost
0%
b) Savanna - acacia trees
0%
c) Prairie - epiphytes
0%
d) Coniferous forest - evergreen trees
Explanation
Answer : (c)
Q.24
'Van Mahotsav' was started by .... .... [Har .P.M.T. 2007]
0%
a) K.M Munshi
0%
b) Sunder Lal Bahuguna
0%
c) Vinoba Bhave
0%
d) J.L Nehru
Explanation
Answer : (a)
Q.25
Biotic components of an ecosystem include .... .... [C.P.M.T.1991]
0%
a) Producers, consumers and decomposes
0%
b) Producers, consumers
0%
c) Producers only
0%
d) Consumers only
Explanation
Answer : (a)
Q.26
Secondary producers are .... ..... [A.M.U.1999]
0%
a) Herbivores
0%
b) Heterotrophs
0%
c) Carnivores
0%
d) Green plants
Explanation
Since Herbivores eat plants, they are eating the primary producers, making them primary consumers. But when carnivores eat them, they turn into secondary producers Answer : (a)
Q.27
Which one has the maximum biomass .... .... [Odisha 2004]
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a) Temperature
0%
b) Tropical rain forest
0%
c) Alpine vegetation
0%
d) Taiga
Explanation
Answer : (b)
Q.28
Study statements (a - d) and select two correct ones a. A lion eating a deer and a sparrow feeding on grain are consumers b. Predator star fish, pisaster, helps in maintaining species diversity of some invertebrates c. Predators ultimately lead to extinction of prey species d. Plant chemical like nicotine and strychnine are produced due to metabolic disorders C.B.S.E. 2010
0%
a) c and d
0%
b) a and d
0%
c) a and b
0%
d) b and c
Explanation
Answer : (c)
Q.29
Which one is detritus food chain? .... .... [D.P.M.T. 2008]
0%
a) Grass → insects → snakes
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b) Plankton → small fish → large fish
0%
c) Organic matter → bacteria → molluscs
0%
d) All the above
Explanation
Answer : (c)
Q.30
Maximum biomass of autotrophs in oceans is made up of .... .... [A.F.M.C.2007]
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a) Benthic brown algae, coastal red algae and daphnids
0%
b) benthic diatoms and marine viruses
0%
c) Sea grasses and slime moulds
0%
d) Free floating microalgae, cyanobacteria and nanoplankton
Explanation
Answer : (d)
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