Selina solutions

Selina solutions

Grade 8

Ecosystems | Short Answer Questions (SA)

Question 1

Q1) Mention if the following statements are True (T) or False (F):

a. Snakes are primary consumers.

b. Some humans are strictly primary consumers while others are secondary or tertiary consumers as well.

c. No ecosystem can survive without light.

d. Cattle go to ponds for drinking water, so they are a constituent of pond ecosystem.

Solution:

a. False

Snakes are secondary consumers as they prey on primary consumers like frogs and rats which eat plants and are primary consumers.

b. True

c. True

d. False

Cattle like cows, lions, tigers come to the pond only to take water and then return back to their dwellings, i.e. their forest ecosystem and hence are not a constituent of pond ecosystem.

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Question 1

Q1) Mention if the following statements are True (T) or False (F):

a. Snakes are primary consumers.

b. Some humans are strictly primary consumers while others are secondary or tertiary consumers as well.

c. No ecosystem can survive without light.

d. Cattle go to ponds for drinking water, so they are a constituent of pond ecosystem.

Solution:

a. False

Snakes are secondary consumers as they prey on primary consumers like frogs and rats which eat plants and are primary consumers.

b. True

c. True

d. False

Cattle like cows, lions, tigers come to the pond only to take water and then return back to their dwellings, i.e. their forest ecosystem and hence are not a constituent of pond ecosystem.

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subject-cta
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