Environment Questions, General Study (GK)

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81.

The biotic component of an ecosystem can be divided into functional categories on the basis of food or energy source. Each such group of organisms forms a

(a)trophic community

(b)food chain

(c)food web

(d)species or organisms

Comment

Answer is: A

82.

What forms the first trophic level in any ecosystem?

(a)Herbivores

(b)Plants

(c)Carnivores

(d)Omnivores

Comment

Answer is: B

83.

The organisms who can synthesize their food by interacting with their environment are called

(a)Heterotrophs

(b)Autotrophs

(c)Self Dependent

(d)Consumers

Comment

Answer is: B

84.

In which of the following the maximum plant diversity is found?

(a)Tropical evergreen forests

(b)Tropical moist deciduous forests

(c)Sub-tropical mountain forests

(d)Temperate moist forests

Comment

Answer is: A

85.

If the amount of energy or biomass of the population of organisms at successive trophic levels is plotted as horizontal bars one above the other, it produces a

(a)square shape

(b)rectangular shape

(c)pyramid shape

(d)highly irregular shape

Comment

Answer is: C

86.

The ecological pyramid of numbers or biomass has a lesson for us that we should have .......food habits.

(a)non-vegetarian

(b)vegetarian

(c)high consumption

(d)intensive

Comment

Answer is: B

87.

What term denotes the organisms getting their food from others?

(a)Heterotrophs

(b)Autotrophs

(c)Producers

(d)Synthesizers

Comment

Answer is: A

88.

A balanced ecosystem is one in which the

(a)number of organisms at all levels is equals

(b)amount of energy synthesized and utilized is equal

(c)amount of biomass at all trophic levels is equal

(d)organisms are interdependent on each other

Comment

Answer is: B

89.

Of the solar energy coming into the Biosphere, what percentage of it is actually used in the photosynthesis?

(a)Less 1%

(b)Between 1% and 1.5%

(c)Between 1.5 and 2%

(d)More than 2%

Comment

Answer is: A

90.

Under optional conditions, the fruit fly (Drosphilia) is capable of producing a new generation every two weeks. This ability is referred to as the .................. of the species.

(a)Carrying capacity

(b)Niche

(c)Biotic Potential

(d)Optimal yield

Comment

Answer is: C

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Environment QuestionsPage 9

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