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E
Question Practice

What percentage of the Earth's surface is covered by oceans, and what is their contribution to primary productivity?

Attempt the question, check the explanation, and continue with similar questions to build confidence before exams.

MCQ_SA
CBSE
Class 12
Biology
Biology
Ecosystem
Question Bank

What percentage of the Earth's...

Single Answer MCQ
Q-00084776

What percentage of the Earth's surface is covered by oceans, and what is their contribution to primary productivity?

1

70% and 55 billion tons

2

80% and 100 billion tons

3

60% and 40 billion tons

4

50% and 200 billion tons

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Q3.

What is the main function of primary productivity in an ecosystem?

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Q4.

Which type of productivity represents the rate of energy input after accounting for the energy used in respiration by plants?

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