Q.1
Fungal association of roots of higher plants in mycorrhiza is .... .... [Pb.P.M.T. 1998]
  • a) Parasitism
  • b) Hyperparasitism
  • c) Mutualism
  • d) Commensalism
Q.2
Soil transport by air is .... .... [B.H.U2006]
  • a) Alluvial
  • b) Colluvial
  • c) Laterite soil
  • d) Eolian
Q.3
A population growing in a habitat with limited resources shows four phases in the following sequences .... .... [D.P.M.T 2011]
  • a) Acceleration → Deceleration → Lag phase → Asymptote
  • b) Asymptote → Acceleration → Deceleration → Lag phase
  • c) Lag phase → Acceleration → Deceleration → Asymptote
  • d) Acceleration → Lag phase → Deceleration → Asymptote
Q.4
Eichhornia crassipes is .... .... [M.P.P.M.T.1996]
  • a) Xerophytes
  • b) Hydrophytes
  • c) Mesophyte
  • d) Parasite
Q.5
Which is appropriately defined ..... ..... [C.B.S.E. 2010]
  • a) host is an organism which provides food to another organisms
  • b) Amensalism is relationship in which one species is benefitted while the other is unaffected
  • c) Predator is an organism that catches and kills other organism for food
  • d) Parasite is an organism which always lives inside the body of other organisms and may kill it
Q.6
A community, which starts succession in a habitat is .... .... [Manipal 1997]
  • a) Pioneer community
  • b) Seral community
  • c) Biotic community
  • d) Ecosere
Q.7
Population growth is indicated by .... ..... [M.P.P.M.T. 2012]
  • a) Emigration
  • b) Mortality
  • c) Natality
  • d) All the above
Q.8
Killing an organisms for feeding is ..... ..... [A.F.M.C. 2003]
  • a) Predation
  • b) Parasitism
  • c) Symbiosis
  • d) Exploitation
Q.9
Functional aspect of a species with references to its place of occurrence is .... .... [Odisha 2006]
  • a) Ecology
  • b) Ecological niche
  • c) Species
  • d) Environment
Q.10
Which is not a primary coloniser? .... .... [Pb.P.M.T.1998]
  • a) Viruses
  • b) Lichens
  • c) Blue-green algae
  • d) Mosses
Q.11
River water deposits: .... .... [M.P.P.M.T.1992]
  • a) Loamy soil
  • b) Alluvial soil
  • c) Laterite soil
  • d) Edaphic climax
Q.12
Least porous soil is .... .... [Har.P.M.T.2002]
  • a) Clay soil
  • b) Sandy soil
  • c) Loam soil
  • d) Gravelly soil
Q.13
A phenomenon when parasite parasitism another parasite is .... .... [D.P.M.T.2010]
  • a) Hyperparasitism
  • b) Parasitoids
  • c) Monoxenous parasitism
  • d) Polyxenous parasitism
Q.14
Study of inter-relationships between a species/individual and environment in all stages of its life cycle .... .... [A.M.U.1991]
  • a) Synecology
  • b) Forest Ecology
  • c) Autecology
  • d) Ecology
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
  • a) 1 - c, 2 - d, 3 - a, 4 - b
  • b) 1 - d, 2 - c, 3 - b, 4 - a
  • c) 1 - a, 2 - c, 3 - b, 4 - d
  • d) 1 - c, 2 - d, 3 - b, 4 – a
Q.16
Plant succession occurring in a sandy area is .... ..... [Odisha 2012]
  • a) Psammosere
  • b) Halosere
  • c) Xerosere
  • d) Hydrosere
Q.17
Plants growing in dry habitat are .... .... [Bih.P.M.T.2004]
  • a) Lithophytes
  • b) Mesophytes
  • c) Hydrophytes
  • d) Xerophytes
Q.18
Which is not true of hydrophytes ? .... .... [Odisha 2002]
  • a) Poorly developed root system
  • b) Thin membranous leaves
  • c) Poorly developed large air space
  • d) Poorly developed vascular bundles
Q.19
Cacti storing water in leaves are .... .... [Odisha 2008]
  • a) Ephemerals
  • b) Drought resistant
  • c) Annuals
  • d) Non-succulents
Q.20
Mutualism occurs between .... .... [A.I.I.M.S. 2001]
  • a) Butterfly and flower
  • b) Escherichia coli and man
  • c) Zoochlorellae and Hydra
  • d) Hermit crab and sea anemone
Q.21
Which is a population .... .... [W.B.2012]
  • a) Spider and trapped flies in its web
  • b) All plants in a forest
  • c) Earthworms that lives in grasslands along with arthropods
  • d) All the oak trees in a forest
Q.22
One species is harmed whereas the other is unaffected. Such type of interaction is called .... .... [H.P.P.M.T.2012]
  • a) Commensalism
  • b) Amensalism
  • c) Parasitism
  • d) Predation
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
  • a) a - 4, b - 3, c - 2, d - 1
  • b) a - 1, b - 2, c - 3, d - 4
  • c) a - 1, b - 3, c - 2, d - 4
  • d) a - 2, b - 3, c - 1, d – 4
Q.24
Population density of terrestrial organisms is measured in terms of individual per .... .... [K.C.E.T. 2007]
  • a) Metre
  • b) Metre2
  • c) Metre3
  • d) Metre4
Q.25
In Mullerian mimicry, the mimic is .... .... [D.P.M.T. 2005]
  • a) Harmless but resembles an obnoxious model
  • b) Harmless but resembles the background
  • c) Harmful but resembles a non-toxic model
  • d) Harmful and resembles a model which is also harmful to predator
Q.26
Which one is true? .... ..... [C.B.S.E 1991]
  • a) Commensalism when none of the interacting population affect each other
  • b) Symbiosis when the interaction is useful to both the populations
  • c) Symbiosis when neither populations affects each other
  • d) Commensalism when the interaction is useful to both the population
Q.27
A plant living for a few days is .... .... [Odisha 2004]
  • a) Annual
  • b) Ephemeral
  • c) Biennial
  • d) Perennial
Q.28
Soil water available to roots is .... .... [C.B.S.E.1991]
  • a) Surface water
  • b) Hygroscopic water
  • c) Gravitational water
  • d) Capillary water
Q.29
Amount of fresh water present as polar and glacial ice is ..... ..... [Kerala 2008]
  • a) 0.5%
  • b) 1.97%
  • c) 0.02%
  • d) 0.01%
Q.30
Relationships between two organisms in which one obtains some benefit at the cost of other is .... .... [A.F.M.C.2002]
  • a) Parasitism
  • b) Predation
  • c) Symbiosis
  • d) Scavenging
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