$A$ linear relationship exists between incident light and the rate of $CO_2$ fixation at/in:

  • A
    High light intensity
  • B
    Low light intensity
  • C
    Dense forests
  • D
    More than one option is correct

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Which of the following is not an external factor for plants?

Water budget (transpiration ratio) required to produce $1$ gm of dry matter by $C_3$ and $C_4$ plants is approximately:

Of the several gases in the atmosphere,plant life mostly depends upon

Assertion $:$ Except for plants in shade or in dense forests,light is rarely a limiting factor in nature.
Reason $: C_4$ plants respond to high light intensities.

At the compensation point,there will be no:

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