NEET Biology MCQ - Organisms And The Environment Mcq - Quiz-9 Solution

Q.1.

Fungal association of roots of higher plants in mycorrhiza is .... .... [Pb.P.M.T. 1998]

33%
a) Parasitism
0%
b) Hyperparasitism
67%
c) Mutualism
0%
d) Commensalism

Explanation

Q.2.

Soil transport by air is .... .... [B.H.U2006]

50%
a) Alluvial
25%
b) Colluvial
0%
c) Laterite soil
25%
d) Eolian

Explanation

Q.3.

A population growing in a habitat with limited resources shows four phases in the following sequences .... .... [D.P.M.T 2011]

25%
a) Acceleration → Deceleration → Lag phase → Asymptote
0%
b) Asymptote → Acceleration → Deceleration → Lag phase
75%
c) Lag phase → Acceleration → Deceleration → Asymptote
0%
d) Acceleration → Lag phase → Deceleration → Asymptote

Explanation

Q.4.

Eichhornia crassipes is .... .... [M.P.P.M.T.1996]

25%
a) Xerophytes
50%
b) Hydrophytes
25%
c) Mesophyte
0%
d) Parasite

Explanation

Q.5.

Which is appropriately defined ..... ..... [C.B.S.E. 2010]

50%
a) host is an organism which provides food to another organisms
0%
b) Amensalism is relationship in which one species is benefitted while the other is unaffected
50%
c) Predator is an organism that catches and kills other organism for food
0%
d) Parasite is an organism which always lives inside the body of other organisms and may kill it

Explanation

Q.6.

A community, which starts succession in a habitat is .... .... [Manipal 1997]

50%
a) Pioneer community
50%
b) Seral community
0%
c) Biotic community
0%
d) Ecosere

Explanation

Q.7.

Population growth is indicated by .... ..... [M.P.P.M.T. 2012]

25%
a) Emigration
25%
b) Mortality
0%
c) Natality
50%
d) All the above

Explanation

Q.8.

Killing an organisms for feeding is ..... ..... [A.F.M.C. 2003]

100%
a) Predation
0%
b) Parasitism
0%
c) Symbiosis
0%
d) Exploitation

Explanation

Q.9.

Functional aspect of a species with references to its place of occurrence is .... .... [Odisha 2006]

33%
a) Ecology
67%
b) Ecological niche
0%
c) Species
0%
d) Environment

Explanation

Q.10.

Which is not a primary coloniser? .... .... [Pb.P.M.T.1998]

67%
a) Viruses
0%
b) Lichens
33%
c) Blue-green algae
0%
d) Mosses

Explanation

Q.11.

River water deposits: .... .... [M.P.P.M.T.1992]

33%
a) Loamy soil
67%
b) Alluvial soil
0%
c) Laterite soil
0%
d) Edaphic climax

Explanation

Q.12.

Least porous soil is .... .... [Har.P.M.T.2002]

67%
a) Clay soil
33%
b) Sandy soil
0%
c) Loam soil
0%
d) Gravelly soil

Explanation

Q.13.

A phenomenon when parasite parasitism another parasite is .... .... [D.P.M.T.2010]

67%
a) Hyperparasitism
0%
b) Parasitoids
0%
c) Monoxenous parasitism
33%
d) Polyxenous parasitism

Explanation

Q.14.

Study of inter-relationships between a species/individual and environment in all stages of its life cycle .... .... [A.M.U.1991]

33%
a) Synecology
0%
b) Forest Ecology
0%
c) Autecology
67%
d) Ecology

Explanation

Q.15.

Match the columns .... .... [Kerala 2012]

Interaction	Example
predation	a. Cuscuta and hedge plants
commensalism	b. Balanusand and Chthamalus
parasitism	c. Cactus and moth
competition	d. orchid and mango

100%
a) 1 - c, 2 - d, 3 - a, 4 - b
0%
b) 1 - d, 2 - c, 3 - b, 4 - a
0%
c) 1 - a, 2 - c, 3 - b, 4 - d
0%
d) 1 - c, 2 - d, 3 - b, 4 – a

Explanation

Q.16.

Plant succession occurring in a sandy area is .... ..... [Odisha 2012]

67%
a) Psammosere
0%
b) Halosere
33%
c) Xerosere
0%
d) Hydrosere

Explanation

Q.17.

Plants growing in dry habitat are .... .... [Bih.P.M.T.2004]

33%
a) Lithophytes
0%
b) Mesophytes
0%
c) Hydrophytes
67%
d) Xerophytes

Explanation

Q.18.

Which is not true of hydrophytes ? .... .... [Odisha 2002]

67%
a) Poorly developed root system
0%
b) Thin membranous leaves
33%
c) Poorly developed large air space
0%
d) Poorly developed vascular bundles

Explanation

Q.19.

Cacti storing water in leaves are .... .... [Odisha 2008]

33%
a) Ephemerals
67%
b) Drought resistant
0%
c) Annuals
0%
d) Non-succulents

Explanation

Q.20.

Mutualism occurs between .... .... [A.I.I.M.S. 2001]

33%
a) Butterfly and flower
0%
b) Escherichia coli and man
33%
c) Zoochlorellae and Hydra
33%
d) Hermit crab and sea anemone

Explanation

Q.21.

Which is a population .... .... [W.B.2012]

33%
a) Spider and trapped flies in its web
0%
b) All plants in a forest
33%
c) Earthworms that lives in grasslands along with arthropods
33%
d) All the oak trees in a forest

Explanation

Q.22.

One species is harmed whereas the other is unaffected. Such type of interaction is called .... .... [H.P.P.M.T.2012]

33%
a) Commensalism
67%
b) Amensalism
0%
c) Parasitism
0%
d) Predation

Explanation

Q.23.

Match the columns .... .... [Kerala 2006]

a. mutualism	tiger and deer
b. commensalism	cuscuta on cissus
c. parasitism	suckerfish and shark
d. predation	crab and sea anemone

100%
a) a - 4, b - 3, c - 2, d - 1
0%
b) a - 1, b - 2, c - 3, d - 4
0%
c) a - 1, b - 3, c - 2, d - 4
0%
d) a - 2, b - 3, c - 1, d – 4

Explanation

Q.24.

Population density of terrestrial organisms is measured in terms of individual per .... .... [K.C.E.T. 2007]

0%
a) Metre
100%
b) Metre2
0%
c) Metre3
0%
d) Metre4

Explanation

Q.25.

In Mullerian mimicry, the mimic is .... .... [D.P.M.T. 2005]

67%
a) Harmless but resembles an obnoxious model
33%
b) Harmless but resembles the background
0%
c) Harmful but resembles a non-toxic model
0%
d) Harmful and resembles a model which is also harmful to predator

Explanation

Q.26.

Which one is true? .... ..... [C.B.S.E 1991]

100%
a) Commensalism when none of the interacting population affect each other
0%
b) Symbiosis when the interaction is useful to both the populations
0%
c) Symbiosis when neither populations affects each other
0%
d) Commensalism when the interaction is useful to both the population

Explanation

Q.27.

A plant living for a few days is .... .... [Odisha 2004]

67%
a) Annual
0%
b) Ephemeral
0%
c) Biennial
33%
d) Perennial

Explanation

Q.28.

Soil water available to roots is .... .... [C.B.S.E.1991]

0%
a) Surface water
0%
b) Hygroscopic water
0%
c) Gravitational water
100%
d) Capillary water

Explanation

Q.29.

Amount of fresh water present as polar and glacial ice is ..... ..... [Kerala 2008]

33%
a) 0.5%
33%
b) 1.97%
0%
c) 0.02%
33%
d) 0.01%

Explanation

Q.30.

Relationships between two organisms in which one obtains some benefit at the cost of other is .... .... [A.F.M.C.2002]

67%
a) Parasitism
0%
b) Predation
33%
c) Symbiosis
0%
d) Scavenging

Explanation

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