Selina solutions

Selina solutions

Grade 8

Ecosystems | Long Answer Questions (LA)

Question 1

Q1) Differentiate among primary, secondary and tertiary consumers. Give one example each in a food chain.

Solution:

The main difference between primary secondary and tertiary consumers is that primary consumers are the herbivores that feed on plants, and secondary consumers can be either carnivores, which prey on other animals, or omnivores, which feed on both animals and plants, whereas tertiary consumers are the apex predators that feed on both secondary and primary consumers.

Rabbits, consuming grass are an example of primary consumers; snakes, consuming rabbits are an example of secondary consumers while owls, consuming snakes are an example of tertiary consumers.

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subject-cta

Question 1

Q1) Differentiate among primary, secondary and tertiary consumers. Give one example each in a food chain.

Solution:

The main difference between primary secondary and tertiary consumers is that primary consumers are the herbivores that feed on plants, and secondary consumers can be either carnivores, which prey on other animals, or omnivores, which feed on both animals and plants, whereas tertiary consumers are the apex predators that feed on both secondary and primary consumers.

Rabbits, consuming grass are an example of primary consumers; snakes, consuming rabbits are an example of secondary consumers while owls, consuming snakes are an example of tertiary consumers.

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subject-cta
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