Q.1
Changes in nature of population are called .... .... [M.H.T.C.E.T. 2011]
  • a) Demography
  • b) Vital index
  • c) Demecology
  • d) Population dynamics
Q.2
Small fish sticks to bottom of shark to obtain food crumbs. The association is .... .... [C.P.M.T. 2008]
  • a) Antibiosis
  • b) Predation
  • c) Commensalism
  • d) Parasitism
Q.3
Figs belongs to .... .... [D.P.M.T. 2010]
  • a) Keystone spices as they show animal dependent pollination .
  • b) Keystone species as they produce food and provide protection to animals during lean period.
  • c) Critical link species as they form connecting link between trees and herbs.
  • d) Critical link species as they establish essential links for absorbing nutrients from soil and organic residues.
Q.4
Submerged hydrophytes exchange gases through .... .... [C.P.M.T.2001]
  • a) Stomata
  • b) Hydrophytes
  • c) Lenticels
  • d) General surface
Q.5
Which of the following is polygamous? .... .... [B.H.U. 2005]
  • a) Wolf
  • b) Swan
  • c) Deer
  • d) Fox
Q.6
Succession in a 6 metre deep pond exhibition a sequence of .... .... [C.P.M.T. 1991]
  • a) Submerged plants → reeds → herbs → floating plants → shrubs → trees
  • b) Floating plants → submerged plants → reeds → herbs → shrubs → trees
  • c) Shrubs → trees → submerged plants → floating plants → reeds → herbs
  • d) Submerged plants → floating plants →> reeds → herbs → shrubs → trees
Q.7
Characteristic feature of mangrove plants is .... .... [H.P.P.M.T.2005]
  • a) Apospory
  • b) Heterospory
  • c) Parthenocarpy
  • d) Vivipary
Q.8
Atmosphere consists of .... .... [PbP.M.T.2000]
  • a) Lithosphere + hydrosphere
  • b) Lithosphere + stratosphere + hydrosphere
  • c) Troposphere + stratosphere + ionosphere
  • d) None of the above
Q.9
Terrestrial pteridophytes are able to grow in tropical rain forest because of .... ..... [Guj.C.E.T 2008]
  • a) Microclimate
  • b) C4 pathway
  • c) Eutrophication
  • d) Biological magnification
Q.10
At asymptote stage, the population is .... .... [M.P.P.M.T. 2002]
  • a) Stabilised
  • b) Increasing
  • c) Decreasing
  • d) Changing
Q.11
Sigmoid/logistic growth curve is represented by .... .... [C.B.S.E 2011]
  • a) dN/dt = rN
  • b) dN/dt = rN(1-N/K)
  • c) Nt = N0+ B + I - D - E
  • d) dN/dt = 1 - N/K
Q.12
Allelopathy is caused by release of .... .... [B.H.U.2002]
  • a) Poison
  • b) Toxin
  • c) Pheromone
  • d) Chemical
Q.13
Plants growing under shade of other plants are .... .... [ kerala 2009]
  • a) Epiphytes
  • b) Semi-epiphytes
  • c) Mesophytes
  • d) Sciophytes
Q.14
Population of an area tends to increase when .... .... [A.M.U. 1997]
  • a) Reproductivity decreases
  • b) Immigration increases
  • c) Emigration occurs
  • d) Predation increases
Q.15
The aggregate of processes that determine the size and composition of any population is known as .... .... [M.P.P.M.T. 1995]
  • a) Population dynamics
  • b) Population dispersal
  • c) Population explosion
  • d) Population density
Q.16
A force that acts against maximum population growth is .... .... [C.B.S.E. 1998]
  • a) Population pressure
  • b) Carrying capacity
  • c) Saturation point
  • d) Environment resistance
Q.17
Dominant species represents most abundant .... ....
  • a) Herb that binds the soil and provides organic matter to it
  • b) Shrub that appears for the first time
  • c) First tree
  • d) Species having major effect on physical environment
Q.18
Root cap is absent in .... .... [R.P.M.T.2002]
  • a) Halophytes
  • b) Hydrophytes
  • c) Xerophytes
  • d) Homophytes
Q.19
Transitional layer between stratosphere and mesosphere is .... .... [H.P.P.M.T. 2007]
  • a) Troposphere
  • b) Lithosphere
  • c) Stratosphere
  • d) Tropopause
Q.20
Which is the following is wrong? .... .... [K.C.E.T. 1998]
  • a) Lichen, an association of fungus and alga, is an example of mutualism
  • b) Epiphytes, using other plants for support only and not for water or food, show commensalism
  • c) Sea anemone and hermit crab association is an example of proto-cooperation
  • d) Mutualism, proto-cooperations and commensalism cannot be included under symbiosis
Q.21
A symbiotic bacterium is .... .... [J.K.C.M.E.E.2010]
  • a) Nitrobacter
  • b) Nitrosococcus
  • c) Nitrocystis
  • d) Rhizobium
Q.22
Climatology is science of
  • a) Edaphic factors
  • b) Topographic factors
  • c) Climate factors
  • d) Biotic factors
Q.23
Presence of higher diversity at the junction of territories of two different habitat is called .... .... [B.H.U. 2008]
  • a) Bottle neck effect
  • b) Edge effect
  • c) Junction effect
  • d) Pasteur effect
Q.24
Viviparity and pneumatophores are features of .... .... [B.H.U.2005]
  • a) Hydrophytes
  • b) Halophytes
  • c) Mesophytes
  • d) Xerophytes
Q.25
In plant succession, the net productivity of climax community .... .... [Kerala 2005]
  • a) Continues to increase
  • b) Becomes stable
  • c) Becomes halved
  • d) Becomes zero
Q.26
In ecological succession from pioneer to climax community, the biomass shall C.P.M.T. 1991
  • a) Decrease
  • b) Increase and then decrease
  • c) no relation
  • d) Increase continuously
Q.27
Resemblance of an organisms to another for protection and hiding is .... .... [D.P.M.T. 2011]
  • a) Camouflage
  • b) Mimicry
  • c) Predation
  • d) Adaptation
Q.28
Two species cannot live in the same niche due to .... .... [C.B.S.E. 2002]
  • a) Allen's law
  • b) Gause hypothesis
  • c) Doll's rule
  • d) Weismann's theory
Q.29
Ao layer is rich in .... .... [C.P.M.T.2007]
  • a) Litter
  • b) Minerals
  • c) Leachates
  • d) Humus
Q.30
An unrestricted or maximum reproduction capacity is called .... .... [C.B.S.E. 2002]
  • a) Birth rate
  • b) Biotic potential
  • c) Carrying capacity
  • d) Fertility
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