Q.1
Physiognomy is .... .... [H.P.P.M.T. 2007]
  • a) Physiology of communities
  • b) Anatomy of communities
  • c) External appearance of communities
  • d) Both A and B
Q.2
Rhizobium bacteria and root nodules of pea have an association called .... .... [Kerala 2002]
  • a) Predation
  • b) Parasitism
  • c) Symbiosis
  • d) Commensalism
Q.3
Adaptive measure to protect against extreme heat by poikilotherm is .... .... [H.P.P.M.T. 2012]
  • a) Hibernation
  • b) Sweating
  • c) Aestivation
  • d) Coiling
Q.4
In commensalism .... .... [A.F.M.C.2007]
  • a) Both partners are benefitted
  • b) Both partners are harmed
  • c) Weaker is benefitted while stronger is unharmed
  • d) None of the above
Q.5
Age pyramid with broad base indicates .... .... [D.P.M.T. 2011]
  • a) High percentage of young individuals
  • b) Low percentage of young individuals
  • c) High percentage of old individuals
  • 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]
  • a) Colony
  • b) Genus
  • c) Community
  • d) Species
Q.7
Plants species with wide range of distribution evolves into local population is called .... .... [Kerala 2009]
  • a) Ecosystems
  • b) Populations
  • c) Ecotypes
  • d) Ephemerals
Q.8
Amongst hydrophytes finely dissected leaves occur in .... .... [C.P.M.T.1991]
  • a) Rooted floating leaved plants
  • b) Submerged plants
  • c) Emerged plants
  • d) Free floating plants
Q.9
Tenebrionid beetles are famous for .... .... [C.E.T.Chd. 2011]
  • a) Conscious mimicry
  • b) Aggressive mimicry
  • c) Mullerian mimicry
  • d) Batesonian mimicry
Q.10
Large scale diurnal variation in surface temperature occurs in .... .... [Odisha 2008]
  • a) Sea
  • b) Lake
  • c) Tundra
  • 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
  • a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion
  • b) The Assertion and Reason are true but Reason is not correct explanation of Assertion
  • c) Assertion is true but, Reason is false
  • d) Assertion is false but, Reason is true
Q.12
Competition is the most severe between two .... .... [C.P.M.T.1991
  • a) Closely related species growing different niche
  • b) Closely related species growing in same habitat
  • c) Distantly related species growing in same habitat
  • d) Distantly related species growing in different niches
Q.13
Succession showing changes in communities at a place is called .... .... [A.M.U. 1997]
  • a) Geographical succession
  • b) Biotic succession
  • c) Physiographic succession
  • d) Climate succession
Q.14
Monarch butterfly is not eaten by predators because of .... .... [A.I.I.M.S 2011]
  • a) Rough skin
  • b) Bitter taste
  • c) Foul smell
  • d) Colouration
Q.15
A plant of reed-swap stage is ..... ..... [J.K.C.M.E.E.2008]
  • a) Juncus
  • b) Salix
  • c) Trapa
  • d) Sagittaria
Q.16
Range of latitude of temperature region is ..... ..... [Guj.C.E.T]
  • a) 40 - 60
  • b) 0 - 20
  • c) 20 - 40
  • d) 60 – 80
Q.17
Which statement is false about predators .... ..... [Kerala 2012]
  • a) Predators keep prey population under control
  • b) Predators help in maintaining species diversity in a community
  • c) If a predator is not efficient, the prey population will become extinct
  • d) Tiger is an example of predator
Q.18
The term of ecology was actually coined by .... .... [A.M.U.1999]
  • a) Aristotle
  • b) Reiter
  • c) Linnaeus
  • d) Odum
Q.19
Competition causes .... .... [D.P.M.T. 2007]
  • a) Symbiosis
  • b) Extinction
  • c) Mutualism
  • d) Larger number of niches
Q.20
Hydrophytes with both hydrophytic and xerophytic traits is .... .... [C.P.M.T.2001]
  • a) Agave
  • b) Nerium
  • c) Vallisneria
  • d) None of the above
Q.21
Best method to solve population problem in india is to .... .... [M.P.P.M.T. 2012]
  • a) Increase food population
  • b) Increase medical facilities
  • c) Reduce birth rate
  • d) Conserve natural resources
Q.22
Human population before .... ..... [M.P.P.M.T. 2000]
  • a) J-shaped growth curve
  • b) Z-shaped growth curve
  • c) S-shaped growth curve
  • 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]
  • a) 400
  • b) 200
  • c) 100
  • d) 50
Q.24
Plants growing on sandy soils are .... .... [Odisha 2010]
  • a) Oxylophytes
  • b) Psammophytes
  • c) Psychrophytes
  • d) Lithophytes
Q.25
Vertical distribution of species occupying different heights is .... .... [J.K.C.E.T. 2012]
  • a) Stratification
  • b) Population dispersal
  • c) Population fragmentation
  • d) Population mobilization
Q.26
Soil best suited for plant growth .... .... [C.P.M.T.2010]
  • a) Clay
  • b) Loam
  • c) Sandy
  • d) Gravel
Q.27
Which one is the following is a characteristic of biological community .... .... [C.B.S.E.2010]
  • a) Natality
  • b) Mortality
  • c) Sex ratio
  • d) Stratification
Q.28
In submerged hydrophytes the stomata occur .... .... [C.P.M.T.1990]
  • a) On lower surface
  • b) On the upper surface
  • c) No where
  • d) On both the surface
Q.29
A non flowering plant of submerged stage is .... .... [Guj.C.E.T.2010]
  • a) Vallisneria
  • b) Ceratophyllum
  • c) Chara
  • d) Hydrilla
Q.30
Organisms capable of maintaining constant body temperature are .... .... [B.H.U.2012]
  • a) Excreting hypotonic urine
  • b) Excreting wastes as uric acid
  • c) Drinking small amount of water
  • d) Excreting salt across their gills
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