Environment Questions, General Study (GK)

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101.

The following feed at all the trophic energy in different trophic levels in an ecosystem is

(a)food chain

(b)food web

(c)ecological pyramid

(d)cycles

Comment

Answer is: C

102.

In an ecotone, the species which become abundant are called

(a)edge species

(b)keystone species

(c)endemic species

(d)foster species

Comment

Answer is: A

103.

The organisms which feeds on bodies of the dead organisms is

(a)scavengers

(b)decomposers

(c)Carnivores

(d)Both 'a' and 'b'

Comment

Answer is: D

104.

Which of the following feed at all the trophic levels except first?

(a)Consumers

(b)Scavengers

(c)Decomposers

(d)Both 'b' and 'c'

Comment

Answer is: D

105.

An aquatic plant introduced from America to check pollution turned out to be a troublesome weed in Indian water bodies. The name of this 'invasive alien species' is

(a)Opuntia

(b)Segilops

(c)Richhornia

(d)Pistia

Comment

Answer is: C

106.

Study of plant communities in relation to their habitats of a given ecosystem is called as

(a)Synocology

(b)Hexicology

(c)Ethology

(d)Autecology

Comment

Answer is: A

107.

Among the following climatic factors, which one has the least effect upon terrestrial ecosystem?

(a)Temperature variation

(b)Wind

(c)Conditions of sunlight

(d)Availability of water

Comment

Answer is: B

108.

The state of inactivity adopted by desert animals during the hottest and driest season is known as

(a)basal metabolism

(b)dormancy

(c)aestivation

(d)hibernation

Comment

Answer is: C

109.

Which one the following terms describes not only the physical space occupied by an organism, but also its functional role in the community of organisms?

(a)Ecotone

(b)Ecological niche

(c)Habitat

(d)Home range

Comment

Answer is: B

110.

The pyramid of biomass will be inverted in the ecosystem of

(a)forests

(b)ponds

(c)grasslands

(d)drylands

Comment

Answer is: B

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Environment QuestionsPage 11

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