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NEET Biology MCQ
Organisms And The Environment Mcq
Quiz 10
Solution
Q.1.
Changes in nature of population are called .... .... [M.H.T.C.E.T. 2011]
0%
a) Demography
40%
b) Vital index
0%
c) Demecology
60%
d) Population dynamics
Q.2.
Small fish sticks to bottom of shark to obtain food crumbs. The association is .... .... [C.P.M.T. 2008]
0%
a) Antibiosis
0%
b) Predation
50%
c) Commensalism
50%
d) Parasitism
Q.3.
Figs belongs to .... .... [D.P.M.T. 2010]
50%
a) Keystone spices as they show animal dependent pollination .
0%
b) Keystone species as they produce food and provide protection to animals during lean period.
0%
c) Critical link species as they form connecting link between trees and herbs.
50%
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]
0%
a) Stomata
67%
b) Hydrophytes
33%
c) Lenticels
0%
d) General surface
Q.5.
Which of the following is polygamous? .... .... [B.H.U. 2005]
33%
a) Wolf
33%
b) Swan
33%
c) Deer
0%
d) Fox
Q.6.
Succession in a 6 metre deep pond exhibition a sequence of .... .... [C.P.M.T. 1991]
50%
a) Submerged plants → reeds → herbs → floating plants → shrubs → trees
0%
b) Floating plants → submerged plants → reeds → herbs → shrubs → trees
0%
c) Shrubs → trees → submerged plants → floating plants → reeds → herbs
50%
d) Submerged plants → floating plants →> reeds → herbs → shrubs → trees
Q.7.
Characteristic feature of mangrove plants is .... .... [H.P.P.M.T.2005]
25%
a) Apospory
50%
b) Heterospory
0%
c) Parthenocarpy
25%
d) Vivipary
Q.8.
Atmosphere consists of .... .... [PbP.M.T.2000]
25%
a) Lithosphere + hydrosphere
75%
b) Lithosphere + stratosphere + hydrosphere
0%
c) Troposphere + stratosphere + ionosphere
0%
d) None of the above
Q.9.
Terrestrial pteridophytes are able to grow in tropical rain forest because of .... ..... [Guj.C.E.T 2008]
0%
a) Microclimate
67%
b) C4 pathway
0%
c) Eutrophication
33%
d) Biological magnification
Q.10.
At asymptote stage, the population is .... .... [M.P.P.M.T. 2002]
33%
a) Stabilised
33%
b) Increasing
33%
c) Decreasing
0%
d) Changing
Q.11.
Sigmoid/logistic growth curve is represented by .... .... [C.B.S.E 2011]
33%
a) dN/dt = rN
67%
b) dN/dt = rN(1-N/K)
0%
c) Nt = N0+ B + I - D - E
0%
d) dN/dt = 1 - N/K
Q.12.
Allelopathy is caused by release of .... .... [B.H.U.2002]
0%
a) Poison
40%
b) Toxin
20%
c) Pheromone
40%
d) Chemical
Q.13.
Plants growing under shade of other plants are .... .... [ kerala 2009]
25%
a) Epiphytes
0%
b) Semi-epiphytes
25%
c) Mesophytes
50%
d) Sciophytes
Q.14.
Population of an area tends to increase when .... .... [A.M.U. 1997]
50%
a) Reproductivity decreases
25%
b) Immigration increases
25%
c) Emigration occurs
0%
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]
25%
a) Population dynamics
0%
b) Population dispersal
25%
c) Population explosion
50%
d) Population density
Q.16.
A force that acts against maximum population growth is .... .... [C.B.S.E. 1998]
25%
a) Population pressure
25%
b) Carrying capacity
0%
c) Saturation point
50%
d) Environment resistance
Q.17.
Dominant species represents most abundant .... ....
33%
a) Herb that binds the soil and provides organic matter to it
0%
b) Shrub that appears for the first time
0%
c) First tree
67%
d) Species having major effect on physical environment
Q.18.
Root cap is absent in .... .... [R.P.M.T.2002]
0%
a) Halophytes
50%
b) Hydrophytes
25%
c) Xerophytes
25%
d) Homophytes
Q.19.
Transitional layer between stratosphere and mesosphere is .... .... [H.P.P.M.T. 2007]
25%
a) Troposphere
50%
b) Lithosphere
0%
c) Stratosphere
25%
d) Tropopause
Q.20.
Which is the following is wrong? .... .... [K.C.E.T. 1998]
33%
a) Lichen, an association of fungus and alga, is an example of mutualism
0%
b) Epiphytes, using other plants for support only and not for water or food, show commensalism
33%
c) Sea anemone and hermit crab association is an example of proto-cooperation
33%
d) Mutualism, proto-cooperations and commensalism cannot be included under symbiosis
Q.21.
A symbiotic bacterium is .... .... [J.K.C.M.E.E.2010]
25%
a) Nitrobacter
25%
b) Nitrosococcus
0%
c) Nitrocystis
50%
d) Rhizobium
Q.22.
Climatology is science of
0%
a) Edaphic factors
0%
b) Topographic factors
83%
c) Climate factors
17%
d) Biotic factors
Q.23.
Presence of higher diversity at the junction of territories of two different habitat is called .... .... [B.H.U. 2008]
67%
a) Bottle neck effect
0%
b) Edge effect
33%
c) Junction effect
0%
d) Pasteur effect
Q.24.
Viviparity and pneumatophores are features of .... .... [B.H.U.2005]
0%
a) Hydrophytes
67%
b) Halophytes
33%
c) Mesophytes
0%
d) Xerophytes
Q.25.
In plant succession, the net productivity of climax community .... .... [Kerala 2005]
100%
a) Continues to increase
0%
b) Becomes stable
0%
c) Becomes halved
0%
d) Becomes zero
Q.26.
In ecological succession from pioneer to climax community, the biomass shall C.P.M.T. 1991
67%
a) Decrease
33%
b) Increase and then decrease
0%
c) no relation
0%
d) Increase continuously
Q.27.
Resemblance of an organisms to another for protection and hiding is .... .... [D.P.M.T. 2011]
50%
a) Camouflage
50%
b) Mimicry
0%
c) Predation
0%
d) Adaptation
Q.28.
Two species cannot live in the same niche due to .... .... [C.B.S.E. 2002]
33%
a) Allen's law
67%
b) Gause hypothesis
0%
c) Doll's rule
0%
d) Weismann's theory
Q.29.
Ao layer is rich in .... .... [C.P.M.T.2007]
25%
a) Litter
50%
b) Minerals
0%
c) Leachates
25%
d) Humus
Q.30.
An unrestricted or maximum reproduction capacity is called .... .... [C.B.S.E. 2002]
33%
a) Birth rate
0%
b) Biotic potential
67%
c) Carrying capacity
0%
d) Fertility
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