Consider the following statements:
1. Gross productivity represents the total energy captured by producers without accounting for energy lost during respiration.
2. Net productivity represents the energy available for growth and reproduction.

Which of the above statements is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2

Question

Consider the following statements:
1. Gross productivity represents the total energy captured by producers without accounting for energy lost during respiration.
2. Net productivity represents the energy available for growth and reproduction.

Which of the above statements is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2

ONLiNE UPSC · Accepted Answer

Statement 1 is correct: Gross Productivity refers to the total energy captured by producers (usually plants or primary producers) in an ecosystem through photosynthesis or chemosynthesis. It does not account for the energy lost through respiration by these producers.

Statement 2 is correct: Net Productivity represents the energy that remains after accounting for the energy used by producers in respiration. It is the energy available for growth, reproduction, and consumption by herbivores and higher trophic levels.

Ecology

Productivity in Ecosystems

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M Question 1	⏱ 0
Consider the following statements: 1. Gross productivity represents the total energy captured by producers without accounting for energy lost during respiration. 2. Net productivity represents the energy available for growth and reproduction. Which of the above statements is/are correct? (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2