Which of the following statements is FALSE? A. The availability of water limits

Question

Which of the following statements is FALSE?

A. The availability of water limits the rate of photosynthesis because stomata must be opened to gather carbon dioxide.

B. Water availability and temperature interact to influence photosynthesis rates.

C. The growing season is the period when temperatures are high enough to support photosynthesis.

D. Net primary productivity increases with increasing mean temperature and rainfall.

E. Areas with high mean annual temperatures have longer growing seasons than do areas with lower temperatures, but the rate of photosynthesis is similar

Explanation / Answer

Statement E is False .

Photosynthesis is affected by the temperature changes.

Light dependent reaction of photosynthesis are not affected by temperature but light independent reactions which are catalysed by the enzymes are temeprature dependent since temperature increases the enzymatic activity. For every increase in 10 degree celcius , the rate of reaction doubles. But this occurs uptill a certain limit. Too high temperatures may lead to denaturation. Thats why greater rates of photosynthesis occurs at higher temepratures.

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