A) nitrogen concentration, carbon dioxide concentration and light
B) carbon dioxide concentration, temperature and light
C) nitrogen concentration, light an temperature
D) carbon dioxide concentration, nitrogen concentration and temperature
Correct Answer: B
Solution :
Carbon dioxide is an effective antitranspirant. A little rise in \[C{{O}_{2}}\] concentration induces partial closure of stomata. It higher concentration results in complete closure of stomata. Light affects the rate of transpiration in two ways firstly by controlling the stomatal opening and secondly by affecting the temperature. Increase in temperature increases the rate of transpiration.
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