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Gross Primary Productivity

In an ecosyst...

Question

In an ecosystem, the rate of production of organic matter during photosynthesis is termed as:

A

Net productivity

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B

Net primary productivity

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C

Gross primary productivity

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D

Secondary productivity

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Solution

The correct option is C
Gross primary productivity

Gross Primary productivity is the amount of organic matter synthesized by producers per unit area in unit time.

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Q. In an ecosystem, the rate of production of organic matter during photosynthesis is termed as

Q. In an ecosystem the rate of formation of organic matter during photosynthesis is termed as :

Q. The rate of biomass production and the rate of production of organic matter during photosynthesis are called ___________ respectively.

Q. Identify the incorrect pair.

I. Net Primary Productivity - Available organic matter for the consumers
II. Primary Productivity - Amount of production of organic matter during photosynthesis
III. Gross Primary Productivity - Amount of biomass produced per unit area over a certain period of time by plants during photosynthesis

Q. Which of the following statement(s) about productivity is/are incorrect?
I. Gross primary productivity of an ecosystem is the rate of production of organic matter per unit area during photosynthesis.
II. Gross primary productivity is measured in terms of kcal/m²/year
III. Net primary productivity of oceans is much higher than that of land masses on earth.
IV. Gross primary productivity = Net primary productivity - Respiration losses (R)

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