Rhizobium bacteria and root nodules of pea have an association called .... .... [Kerala 2002]
50%
a) Predation
0%
b) Parasitism
50%
c) Symbiosis
0%
d) Commensalism
Q.3.
Adaptive measure to protect against extreme heat by poikilotherm is .... .... [H.P.P.M.T. 2012]
50%
a) Hibernation
50%
b) Sweating
0%
c) Aestivation
0%
d) Coiling
Q.4.
In commensalism .... .... [A.F.M.C.2007]
100%
a) Both partners are benefitted
0%
b) Both partners are harmed
0%
c) Weaker is benefitted while stronger is unharmed
0%
d) None of the above
Q.5.
Age pyramid with broad base indicates .... .... [D.P.M.T. 2011]
100%
a) High percentage of young individuals
0%
b) Low percentage of young individuals
0%
c) High percentage of old individuals
0%
d) Low percentage of old individuals
Q.6.
The sum total of the population of the same kind of organisms constitute .... .... [C.B.S.E.1993]
100%
a) Colony
0%
b) Genus
0%
c) Community
0%
d) Species
Q.7.
Plants species with wide range of distribution evolves into local population is called .... .... [Kerala 2009]
100%
a) Ecosystems
0%
b) Populations
0%
c) Ecotypes
0%
d) Ephemerals
Q.8.
Amongst hydrophytes finely dissected leaves occur in .... .... [C.P.M.T.1991]
100%
a) Rooted floating leaved plants
0%
b) Submerged plants
0%
c) Emerged plants
0%
d) Free floating plants
Q.9.
Tenebrionid beetles are famous for .... .... [C.E.T.Chd. 2011]
100%
a) Conscious mimicry
0%
b) Aggressive mimicry
0%
c) Mullerian mimicry
0%
d) Batesonian mimicry
Q.10.
Large scale diurnal variation in surface temperature occurs in .... .... [Odisha 2008]
100%
a) Sea
0%
b) Lake
0%
c) Tundra
0%
d) Desert
Q.11.
ASSERTION: Frog can change colour according to its surrounding REASON: It is mimicry to capture preys A.I.I.M.S. 2012
100%
a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion
0%
b) The Assertion and Reason are true but Reason is not correct explanation of Assertion
0%
c) Assertion is true but, Reason is false
0%
d) Assertion is false but, Reason is true
Q.12.
Competition is the most severe between two .... .... [C.P.M.T.1991
100%
a) Closely related species growing different niche
0%
b) Closely related species growing in same habitat
0%
c) Distantly related species growing in same habitat
0%
d) Distantly related species growing in different niches
Q.13.
Succession showing changes in communities at a place is called .... .... [A.M.U. 1997]
100%
a) Geographical succession
0%
b) Biotic succession
0%
c) Physiographic succession
0%
d) Climate succession
Q.14.
Monarch butterfly is not eaten by predators because of .... .... [A.I.I.M.S 2011]
0%
a) Rough skin
100%
b) Bitter taste
0%
c) Foul smell
0%
d) Colouration
Q.15.
A plant of reed-swap stage is ..... ..... [J.K.C.M.E.E.2008]
100%
a) Juncus
0%
b) Salix
0%
c) Trapa
0%
d) Sagittaria
Q.16.
Range of latitude of temperature region is ..... ..... [Guj.C.E.T]
100%
a) 40 - 60
0%
b) 0 - 20
0%
c) 20 - 40
0%
d) 60 – 80
Q.17.
Which statement is false about predators .... ..... [Kerala 2012]
100%
a) Predators keep prey population under control
0%
b) Predators help in maintaining species diversity in a community
0%
c) If a predator is not efficient, the prey population will become extinct
0%
d) Tiger is an example of predator
Q.18.
The term of ecology was actually coined by .... .... [A.M.U.1999]
100%
a) Aristotle
0%
b) Reiter
0%
c) Linnaeus
0%
d) Odum
Q.19.
Competition causes .... .... [D.P.M.T. 2007]
0%
a) Symbiosis
100%
b) Extinction
0%
c) Mutualism
0%
d) Larger number of niches
Q.20.
Hydrophytes with both hydrophytic and xerophytic traits is .... .... [C.P.M.T.2001]
100%
a) Agave
0%
b) Nerium
0%
c) Vallisneria
0%
d) None of the above
Q.21.
Best method to solve population problem in india is to .... .... [M.P.P.M.T. 2012]
0%
a) Increase food population
100%
b) Increase medical facilities
0%
c) Reduce birth rate
0%
d) Conserve natural resources
Q.22.
Human population before .... ..... [M.P.P.M.T. 2000]
100%
a) J-shaped growth curve
0%
b) Z-shaped growth curve
0%
c) S-shaped growth curve
0%
d) All the above
Q.23.
Scholars caught, marked and released 80 fishes in a pond. Later 100 fishes were caught at random. 40 of them were marked. The number of fishes in the pond is .... .... [A.I.I.M.S 2001]
100%
a) 400
0%
b) 200
0%
c) 100
0%
d) 50
Q.24.
Plants growing on sandy soils are .... .... [Odisha 2010]
100%
a) Oxylophytes
0%
b) Psammophytes
0%
c) Psychrophytes
0%
d) Lithophytes
Q.25.
Vertical distribution of species occupying different heights is .... .... [J.K.C.E.T. 2012]
100%
a) Stratification
0%
b) Population dispersal
0%
c) Population fragmentation
0%
d) Population mobilization
Q.26.
Soil best suited for plant growth .... .... [C.P.M.T.2010]
0%
a) Clay
100%
b) Loam
0%
c) Sandy
0%
d) Gravel
Q.27.
Which one is the following is a characteristic of biological community .... .... [C.B.S.E.2010]
100%
a) Natality
0%
b) Mortality
0%
c) Sex ratio
0%
d) Stratification
Q.28.
In submerged hydrophytes the stomata occur .... .... [C.P.M.T.1990]
100%
a) On lower surface
0%
b) On the upper surface
0%
c) No where
0%
d) On both the surface
Q.29.
A non flowering plant of submerged stage is .... .... [Guj.C.E.T.2010]
100%
a) Vallisneria
0%
b) Ceratophyllum
0%
c) Chara
0%
d) Hydrilla
Q.30.
Organisms capable of maintaining constant body temperature are .... .... [B.H.U.2012]
100%
a) Excreting hypotonic urine
0%
b) Excreting wastes as uric acid
0%
c) Drinking small amount of water
0%
d) Excreting salt across their gills
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