Which of the following statements is incorrect?

  • A
    Stomatal opening is influenced by many factors and potassium ions.
  • B
    All enzymes are proteins,but all proteins are not enzymes.
  • C
    All angiosperms have seeds,but all seed-bearing plants are not angiosperms.
  • D
    Factors that affect respiration influence photosynthesis,but the reverse is not possible.

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Assertion : $D.C.M.U.$ is a photosynthetic inhibitor.
Reason : $D.C.M.U.$ inhibits the photolysis of water.

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Photosynthetic rate and productivity will increase by increasing $CO_2$ concentration in :-

$A$ plants have a higher temperature optimum than the plants adapted to $B$ climate. Here $A$ and $B$ refer to:

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