1. An ecosystem is

a) The community of organisms together with the environment in which they live

b) living and non living components of a habitat

c) A community of organisms interacting with one another

d) natural system

Ans. a

2. Energy flow in an ecosystem is

a) Unidirectional

b) Bidirectional

c) Multidirectional

d) None of the above

Ans. a

3.  Ecology is the study of:

a)  Environment

b)  forests

c)  Living and non living components

d) Reciprocal relationship between living and non living components

Ans. d

4. Ecology of single species called

a) Autoecology

b) community ecology

c) Synecology

d) Ecology of many species

Ans. a

5.  Who coined The term ‘Biocoenosis’

a) Herbert G. Andrewartha

b) Carl Mobius

c) john beard

d) arthur cain

Ans. b

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6.  The pyramid of energy in any terrestrial ecosystem is

a) upright

b) irregular

c) inverted

d) spindle shaped

Ans. a

7.  Who proposed concept of ecological pyramid

a) charles elton

b) james brown

c) rachel carson

d) rene dubos

Ans. a

8. Source of energy in an ecosystem is

a) Food and nutrients

b) Sunlight

c) D.N.A

d) ATP

Ans. b

9. Who form Trophic levels

a) Organisms linked in food chain

b) only animals

c) Only herbivores

d) Only plants

Ans. a

10. Full form of MAB is

a) Man and biosphere

b) Man, antibiotics and bacteria

c) Man and biotic community

d) none of above

Ans. a

11. Species present in different geographical regions separated by special barrier are:

a) Sympatric

b) Allopatric

c) Sibling

d) None of the above

Ans. b