Ecosystems Quiz 3

Question 1

In an ecosystem, bacteria are considered as

Accepted Answer

microconsumers

Answer

primary consumers

Answer

macroconsumers

Answer

secondary consumers

Question 2

Which of the following can be a top carnivore of marine ecosystem?

Accepted Answer

Kingfisher

Answer

Zooplankton

Answer

Sea cucumber

Answer

Sea horse

Question 3

Identify the possible link &lsquo;A&rsquo; in the following food chain. Plant &rarr; Insect &rarr; Frog &rarr; A&rsquo; &rarr; Eagle

Accepted Answer

Cobra

Answer

Rabbit

Answer

Wolf

Answer

Parrot

Question 4

Why is the pyramid of biomass inverted in sea?

Accepted Answer

Because phytoplankton which are primary producers have less biomass.

Answer

Because plants are absent.

Answer

Because fishes have less biomass.

Answer

Because primary producers have more biomass.

Question 5

Identify the wrong statement in relation to concept of pyramids.

Accepted Answer

Pyramid of biomass in sea is upright because fishes feed on standing crop of planktons.

Answer

Pyramid of energy is always upright, can never be inverted.

Answer

In most ecosystems, all the pyramids of number of energy and biomass are upright.

Answer

Inverted pyramid of biomass is observed in pond ecosystem as small standing crop of phytoplankton supports larger zooplanktons.

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