NEET Biology Ecosystem Question Bank Ecosystem

  • question_answer
    The rate at which light energy is converted into chemical energy of organic molecules is the ecosystem's [CBSE PMT 1998; BHU 1999; Kerala CET 2003]

    A) Net primary productivity

    B) Gross secondary productivity

    C) Net secondary productivity

    D) Gross primary productivity

    Correct Answer: D

    Solution :

    Gross primary productivity is the total rate of photosynthesis. Light energy is converted into chemical energy including the organic matter used up in respiration during the measurement period.


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