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NEET Biology MCQ
Organisms And The Environment Mcq
Quiz 11
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Q.1
According to which branch of biology, population is a group of individuals of a species which interbreed and remain isolated from other such population .... .... [Guj.C.E.T.2010]
0%
a) Genetics
0%
b) Embryology
0%
c) Ecology
0%
d) Environmental biology
Explanation
Answer : (c)
Q.2
Organisms living at the bottom of a lake is .... .... [M.P.P.M.T.2000]
0%
a) Nekton
0%
b) Benthos
0%
c) Plankton
0%
d) Pelagic
Explanation
Answer : (b)
Q.3
Natality is .... .... [Kerala 2006]
0%
a) Total number of individuals present for unit area at a given time
0%
b) Increase in number of individuals in a population under a given environmental conditions
0%
c) Loss of individuals due to death in a population under given environmental conditions
0%
d) Movement of individuals into and out of population
Explanation
Answer : (b)
Q.4
Proportion of young individuals is highest in case of .... .... [C.P.M.T. 1992]
0%
a) Declining population
0%
b) Stable population
0%
c) Both A and B
0%
d) Expanding population
Explanation
Answer : (d)
Q.5
A progressive series of changes in plant and animal life in an area from initial colonisation is called .... .... [A.M.U.2009]
0%
a) Evolution
0%
b) Succession
0%
c) Selection
0%
d) Specialisation
Explanation
Answer : (b)
Q.6
Sunken stomata occur in .... .... [Odisha 2006]
0%
a) Xerophytes
0%
b) Hydrophytes
0%
c) Mesophytes
0%
d) Opsanophytes
Explanation
Answer:(a)
Q.7
Most important parameter for determining population growth is .... .... [C.E.T.Chd 2011]
0%
a) Population size
0%
b) Natality
0%
c) Vital index
0%
d) Population growth curves
Explanation
Answer : (a)
Q.8
Association between barnacles and whale/limulus is .... .... [Kerala 2010]
0%
a) Symbiosis
0%
b) Commensalism
0%
c) Parasitism
0%
d) Predatorship
Explanation
Answer : (b)
Q.9
Match the columns and find the correct combination .... .... [E.A.M.C.E.T.2009]
a. Spongy aril
Jussiaea
b. Multiple epidermis
Pistia
c. Respiratory roots
Nerium
d. Root pockets
Sagittaria
- - - -
Nymphaea
0%
a) a - 1,b - 3, c - 2, d - 5
0%
b) a - 2,b - 1, c- 4, d - 3
0%
c) a - 5, b - 3, c - 1, d -2
0%
d) a - 4, b - 2, c - 3, d – 1
Explanation
Answer : (c)
Q.10
Hyperparasite is parasite which .... .... [Manipal 1998]
0%
a) Kills its host
0%
b) Completes life cycle in one host
0%
c) Uses host machinery for reproduction
0%
d) None of above
Explanation
A hyperparasite is a parasite whose host, often an insect, is also a parasite, Answer: (d)
Q.11
"Complete competitors cannot coexist" is true for .... .... [D.P.M.T.2011]
0%
a) Primary succession
0%
b) Secondary succession
0%
c) Character displacement
0%
d) Competitive exclusion
Explanation
Answer : (d)
Q.12
Soil particles determine its .... .... [C.B.S.E.1992]
0%
a) Texture
0%
b) Field capacity
0%
c) Water holding capacity
0%
d) Soil flora
Explanation
Answer : (a)
Q.13
Match the columns and find the correct options .... .... [Kerala 2011]
a. Pacific salmon
p. verhulst - pearl logistic growth
b. N
1
= N
0
e
rt
q. breeds only once in life time
c. oyster
r. exponential growth
d. dN/dt = rN
s. large number of mall size offspring
0%
a) a - s, b - r, c - p, d - q
0%
b) a - r, b - s, c - p, d - q
0%
c) a - r, b - p, c - s, d - q
0%
d) a - q, b - r, c - s, d - p
Explanation
Answer : (d)
Q.14
Animals that can tolerate a narrow ranges of salinity are .... .... [A.M.U.2012 ]
0%
a) Stenohaline
0%
b) Euryhaline
0%
c) Anadromous
0%
d) Catadromous
Explanation
Answer : (a)
Q.15
A keystone species is the one which has .... .... [B.H.U. 2008]
0%
a) A small proportion of total biomass but has a huge impact on community's organisation and survival
0%
b) A rare species with little impact on biomass and other species in the community
0%
c) A plenty of biomass but low impact on community's organisation
0%
d) A dominant species which has a large proportion of biomass and which affects many other species
Explanation
Answer : (a)
Q.16
An association of individual of different species living in the same habitat and having functional interaction is .... .... [A.M.U.2002]
0%
a) Population
0%
b) Ecological niche
0%
c) Biotic community
0%
d) Ecosystem
Explanation
Answer:(c)
Q.17
Root system is poorly developed in .... .... [Guj.C.E.T. 2006]
0%
a) Hyphaene
0%
b) Hydrilla
0%
c) Halophytes
0%
d) Hygrophytes
Explanation
Answer : (b)
Q.18
Hydrilla is .... .... [Odisha 2012]
0%
a) Phytoplankton
0%
b) Floating hydrophyte
0%
c) Submerged hydrophyte
0%
d) Amphibian
Explanation
Answer : (c)
Q.19
Ozone layer occurs in .... ..... [D.P.M.T.2008]
0%
a) Mesosphere
0%
b) Thermosphere
0%
c) Stratosphere
0%
d) Troposphere
Explanation
Answer : (c)
Q.20
The association between ants and some members of family rubiaceae is .... .... [A.M.U. 1997]
0%
a) Ornithophily
0%
b) Entomophily
0%
c) Myrmecophily
0%
d) Anemophily
Explanation
Answer : (c)
Q.21
Which one is first colonizer of bare rock/pioneer community in Xerarch? .... .... [Kerala 2012]
0%
a) Annual herb
0%
b) Perennial herb
0%
c) Lichen
0%
d) Scrub
Explanation
Answer : (c)
Q.22
Physical and chemical conditions of soil are studied under .... .... [J.I.P.M.E.R.2000]
0%
a) Topographic factors
0%
b) Edaphic factors
0%
c) Biotic factors
0%
d) Climatic factors
Explanation
Answer : (b)
Q.23
Which one is an amphibious plant .... .... [Guj.C.E.T. 2006]
0%
a) Lotus
0%
b) Vallisneria
0%
c) Typha
0%
d) Trapa
Explanation
Answer : (c)
Q.24
The sum total of the populations of the same kind of organisms constitute .... .... [C.B.S.E.1993]
0%
a) Colony
0%
b) Genus
0%
c) Community
0%
d) Species
Explanation
Answer : (d)
Q.25
Increase in number of individuals in a population represents .... .... [H.P.P.M.T. 2005]
0%
a) Natality
0%
b) Mortality
0%
c) Density
0%
d) Diversity
Explanation
Answer : (c)
Q.26
Primary succession is development of communities on .... ..... [H.P.P.M.T. 2010]
0%
a) Newly exposed unoccupied habitat
0%
b) Cleared forest area
0%
c) Freshly harvested crop field
0%
d) Pond filled after a dry season
Explanation
Answer : (a)
Q.27
Praying mantis is good example of .... ... [C.B.S.E.2006]
0%
a) Camouflage
0%
b) Warning colouration
0%
c) Mullerian mimicry
0%
d) Social insect
Explanation
Answer : (a)
Q.28
Two opposite forces operate in growth and development of every population. One of them has ability to reproduce at a given rate. .... .... [C.B.S.E. 2003]
0%
a) Morbidity
0%
b) Fecundity
0%
c) Biotic potential
0%
d) Environment resistance
Explanation
Answer : (d)
Q.29
Dominant producers of neritic zone of sea are .... .... [Odisha 2007]
0%
a) Phytoplankton
0%
b) Zooplankton
0%
c) Micro-organisms
0%
d) Diatoms
Explanation
Answer : (a)
Q.30
An adaptation of plants to water scarcity and high temperature is .... .... [Guj.C.E.T. 2010]
0%
a) Succulent stem stores water
0%
b) Poorly developed root
0%
c) They shed their leaves
0%
d) In unfavorable season, plants survive in dormant state as seeds
Explanation
Answer : (a)
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