NEET Biology MCQ - Organisms And The Environment Mcq - Quiz-11 Solution

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
25%
b) Embryology
25%
c) Ecology
50%
d) Environmental biology

Explanation

Q.2.

Organisms living at the bottom of a lake is .... .... [M.P.P.M.T.2000]

0%
a) Nekton
33%
b) Benthos
33%
c) Plankton
33%
d) Pelagic

Explanation

Q.3.

Natality is .... .... [Kerala 2006]

25%
a) Total number of individuals present for unit area at a given time
50%
b) Increase in number of individuals in a population under a given environmental conditions
25%
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

Q.4.

Proportion of young individuals is highest in case of .... .... [C.P.M.T. 1992]

0%
a) Declining population
0%
b) Stable population
25%
c) Both A and B
75%
d) Expanding population

Explanation

Q.5.

A progressive series of changes in plant and animal life in an area from initial colonisation is called .... .... [A.M.U.2009]

67%
a) Evolution
0%
b) Succession
33%
c) Selection
0%
d) Specialisation

Explanation

Q.6.

Sunken stomata occur in .... .... [Odisha 2006]

50%
a) Xerophytes
25%
b) Hydrophytes
0%
c) Mesophytes
25%
d) Opsanophytes

Explanation

Q.7.

Most important parameter for determining population growth is .... .... [C.E.T.Chd 2011]

0%
a) Population size
50%
b) Natality
25%
c) Vital index
25%
d) Population growth curves

Explanation

Q.8.

Association between barnacles and whale/limulus is .... .... [Kerala 2010]

33%
a) Symbiosis
33%
b) Commensalism
33%
c) Parasitism
0%
d) Predatorship

Explanation

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

50%
a) a - 1,b - 3, c - 2, d - 5
25%
b) a - 2,b - 1, c- 4, d - 3
25%
c) a - 5, b - 3, c - 1, d -2
0%
d) a - 4, b - 2, c - 3, d – 1

Explanation

Q.10.

Hyperparasite is parasite which .... .... [Manipal 1998]

33%
a) Kills its host
33%
b) Completes life cycle in one host
33%
c) Uses host machinery for reproduction
0%
d) None of above

Explanation

Q.11.

"Complete competitors cannot coexist" is true for .... .... [D.P.M.T.2011]

0%
a) Primary succession
33%
b) Secondary succession
0%
c) Character displacement
67%
d) Competitive exclusion

Explanation

Q.12.

Soil particles determine its .... .... [C.B.S.E.1992]

0%
a) Texture
0%
b) Field capacity
33%
c) Water holding capacity
67%
d) Soil flora

Explanation

Q.13.

Match the columns and find the correct options .... .... [Kerala 2011]

a. Pacific salmon	p. verhulst - pearl logistic growth
b. N₁ = N₀e^rt	q. breeds only once in life time
c. oyster	r. exponential growth
d. dN/dt = rN	s. large number of mall size offspring

33%
a) a - s, b - r, c - p, d - q
33%
b) a - r, b - s, c - p, d - q
0%
c) a - r, b - p, c - s, d - q
33%
d) a - q, b - r, c - s, d - p

Explanation

Q.14.

Animals that can tolerate a narrow ranges of salinity are .... .... [A.M.U.2012 ]

0%
a) Stenohaline
67%
b) Euryhaline
33%
c) Anadromous
0%
d) Catadromous

Explanation

Q.15.

A keystone species is the one which has .... .... [B.H.U. 2008]

67%
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
33%
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

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
50%
b) Ecological niche
50%
c) Biotic community
0%
d) Ecosystem

Explanation

Q.17.

Root system is poorly developed in .... .... [Guj.C.E.T. 2006]

50%
a) Hyphaene
50%
b) Hydrilla
0%
c) Halophytes
0%
d) Hygrophytes

Explanation

Q.18.

Hydrilla is .... .... [Odisha 2012]

50%
a) Phytoplankton
50%
b) Floating hydrophyte
0%
c) Submerged hydrophyte
0%
d) Amphibian

Explanation

Q.19.

Ozone layer occurs in .... ..... [D.P.M.T.2008]

50%
a) Mesosphere
0%
b) Thermosphere
50%
c) Stratosphere
0%
d) Troposphere

Explanation

Q.20.

The association between ants and some members of family rubiaceae is .... .... [A.M.U. 1997]

50%
a) Ornithophily
50%
b) Entomophily
0%
c) Myrmecophily
0%
d) Anemophily

Explanation

Q.21.

Which one is first colonizer of bare rock/pioneer community in Xerarch? .... .... [Kerala 2012]

0%
a) Annual herb
0%
b) Perennial herb
50%
c) Lichen
50%
d) Scrub

Explanation

Q.22.

Physical and chemical conditions of soil are studied under .... .... [J.I.P.M.E.R.2000]

0%
a) Topographic factors
50%
b) Edaphic factors
50%
c) Biotic factors
0%
d) Climatic factors

Explanation

Q.23.

Which one is an amphibious plant .... .... [Guj.C.E.T. 2006]

0%
a) Lotus
50%
b) Vallisneria
50%
c) Typha
0%
d) Trapa

Explanation

Q.24.

The sum total of the populations of the same kind of organisms constitute .... .... [C.B.S.E.1993]

50%
a) Colony
0%
b) Genus
0%
c) Community
50%
d) Species

Explanation

Q.25.

Increase in number of individuals in a population represents .... .... [H.P.P.M.T. 2005]

100%
a) Natality
0%
b) Mortality
0%
c) Density
0%
d) Diversity

Explanation

Q.26.

Primary succession is development of communities on .... ..... [H.P.P.M.T. 2010]

50%
a) Newly exposed unoccupied habitat
50%
b) Cleared forest area
0%
c) Freshly harvested crop field
0%
d) Pond filled after a dry season

Explanation

Q.27.

Praying mantis is good example of .... ... [C.B.S.E.2006]

0%
a) Camouflage
0%
b) Warning colouration
50%
c) Mullerian mimicry
50%
d) Social insect

Explanation

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]

100%
a) Morbidity
0%
b) Fecundity
0%
c) Biotic potential
0%
d) Environment resistance

Explanation

Q.29.

Dominant producers of neritic zone of sea are .... .... [Odisha 2007]

33%
a) Phytoplankton
0%
b) Zooplankton
33%
c) Micro-organisms
33%
d) Diatoms

Explanation

Q.30.

An adaptation of plants to water scarcity and high temperature is .... .... [Guj.C.E.T. 2010]

50%
a) Succulent stem stores water
0%
b) Poorly developed root
0%
c) They shed their leaves
50%
d) In unfavorable season, plants survive in dormant state as seeds

Explanation

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