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is the rate of production of organic mat...

____ is the rate of production of organic matter by consumers.

A

Primary productivity

B

secondary productivity

C

Net primary productivity

D

Gross primary productivity.

Text Solution

Verified by Experts

The correct Answer is:
B
The rate at which food energy is assimilated at the trophic level of consumers is called secondary productivity. In other words, the rate of synthesis of organic matter by consumers is called as secondary productivity. The primary producers have produced the food for consumers, and secondary productivity reflects only the utilisation of this food for the production of consumer biomass.
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Secondary productivity is the rate of formation of new organic matter by consumers.

The biomass available for consumption to heterotrophs and the rate formation of new organic matter by consumers are defined as

Knowledge Check

  • The rate of synthesis of organic matter by consumers is

    A
    net primary productivity
    B
    gross primary productivity
    C
    standing state
    D
    secondary productivity

  • The biomass avallable for consumption to het- erotrophs and the rate of formation of new organic matter by consumers are defined as

    A
    Gross primary productivity and net primary productivity respectively
    B
    Net primary productivity and gross primary productivity respectively
    C
    Gross primary productivity and secondary productivity respectively
    D
    Net primary productivity and secondary productivity respectively

  • Biomass available for consumers and the rate of formation of new organic matter by consumer are respectively:

    A
    Gross primary productivity and net primary productivity
    B
    Net primary productivity and gross primary productivity
    C
    Gross primary productivity and secondary productivity
    D
    Net primary productivity and secondary productivity

    • Similar Questions

    Explore conceptually related problems

    Go through the following statements. A. Primary productivity of all ecosystem is a constant. B. The annual net primary productivity of the whole of the biosphere is 17 million tons (dry weight) of organic matter. C. Net primary productivity is the amount of biomass available for consumption by carnivores. D. . Secondary productivity is defined as the rate of formation of new organic matter by decomposers. E. Primary productivity depends on the plant species inhabiting a particular area. Which of the above statements about productivity is true?

    Identify the correct match . 1. Stratification : Vertical distribution of different species occupying different levels . 2. Secondary productivity : Amount of biomass or organic matter produced per unit area over a time period by plant during photosynthesis . 3. Primary productivity : Rate of formation of new organic matter by consumers . 4 Decomposition : Break down complex organic matter into inorganic substances like carbon dioxide , water and nutrients

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

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

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

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