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81.

When peacock eats snakes which eat insects thriving on green plants, peacock is:

A.	A primary consumer	B.	A primary dcomposer
C.	Final decomposer	D.	The apex of the food pyramid

82.

The whale is:

A.	Primary producer	B.	Secondary consumer
C.	A decomposer	D.	Herbivores

83.

A complex of several species and communities in various stages of succession maintained under similar climatic conditions is known as:

A.	Biome	B.	Environmental complex
C.	Biological spectrum	D.	Biological clocks

84.

The non-green plants are as important as the green plants because they:

A.	Cause human disease	B.	Cause diseases of other plants
C.	Are useful in several industries	D.	Bring about decomposition of dead animals and plant remains

85.

In a fish aquarium green aquatic plants are grown primarily for:

A.	Oxygen	B.	Carbon dioxide
C.	Fish feed	D.	Decoration

86.

The earth's atmosphere in which organisms live, is called:

A.	Ecosystem	B.	Ecosom
C.	Biosphere	D.	Biocoenosis

87.

The phytoplanktonic forms of plants are:

A.	Insectivorous type	B.	Heterotrophs
C.	Chemotrophs	D.	Autotrophs

88.

Biome' is:

A.	A community of organisms interacting with one another	B.	That part of the earth and its atmosphere, which inhabits living organisms
C.	The flora on land	D.	The flora in an ocean

89.

All the living organisms on the earth interacting with atmosphere constitute:

A.	Biosphere	B.	Community
C.	Biome	D.	Association

90.

In a food chain, the initial organism is:

A.	Herbivore	B.	Photosynthesis
C.	Carnivore	D.	Symbiotic