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The graph shows the relation between lig...

The graph shows the relation between light intensity and the giving off and taking up of carbon dioxide by the leaves of a plant. Why is most carbon dioxide given off when the light intensity is zero units.

A

Because it is just the start of the experiment

B

Only respiration is taking place at this intensity of light

C

Only photosynthesis is taking place at this intensity of light

D

The rate of photosynthesis is equivalent to the rate of respiration

Text Solution

Verified by Experts

The correct Answer is:
B
Light has indirect effects on the rate of respiration with the increase in light intensity the temperature of the surrounding atmosphere also increases thus affecting the rate of respiration.
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