Environment Questions, General Study (GK)

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71.

What is complex of vegetation called when it undergoes no further change unless the climate change perceptibly?

(a)An ecosystem

(b)Climatic climax community

(c)End of succession

(d)Edaphic climax community

Comment

Answer is: B

72.

In a chain of communities in a succession each community is a

(a)Link

(b)Step

(c)Sere

(d)Climax

Comment

Answer is: C

73.

The first community to establish itself in an area having no vegetation is formed by the

(a)pioneers

(b)xerosere

(c)beginners

(d)climatic climax

Comment

Answer is: A

74.

A succession taking place in an area where there had been no vegetation earlier is called a ............ succession.

(a)pioneers

(b)primary

(c)secondary

(d)fresh

Comment

Answer is: B

75.

Sometimes the succession starts in areas where the physical conditions required for plant growth are already present. such a succession is called?

(a)pioneers

(b)primary

(c)climax

(d)allogenic

Comment

Answer is: D

76.

The succession may begin in an area where some natural disaster has caused removal of existing vegetation. such a succession is called?

(a)primary

(b)secondary

(c)allogenic

(d)autogenic

Comment

Answer is: C

77.

A succession starting in a lake or river etc is called .......... succession.

(a)Xeric

(b)Hydric

(c)A Primary

(d)A Secondary

Comment

Answer is: B

78.

A xeric succession occurs in

(a)a desert region

(b)a mountains region

(c)a humid region

(d)a very cold region

Comment

Answer is: A

79.

The functioning of an ecosystem involves

(a)flow of energy and circulation of nutrients

(b)an increasing simplicity of relations

(c)increasing animal populations

(d)increasing number of trees and bushes etc

Comment

Answer is: A

80.

The Ecological pyramid that is always upright

(a)pyramid of energy

(b)pyramid of biomass

(c)pyramid of number

(d)None of these

Comment

Answer is: A

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Environment QuestionsPage 8

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