With reference to factors affecting the rate | vedclass

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Question

(B) The correct answer is $B$. Statement $B$ is incorrect because $C_4$ plants show higher rates of photosynthesis at higher temperatures,whereas $C_3

Vedclass · Accepted Answer

$C_3$ plants respond to higher temperature with enhanced photosynthesis while $C_4$ plants have much lower temperature optimum.

Vedclass · Answer

(B) The correct answer is $B$. Statement $B$ is incorrect because $C_4$ plants show higher rates of photosynthesis at higher temperatures,whereas $C_3$ plants have a lower temperature optimum. $C_4$ plants are adapted to warmer environments and possess a mechanism to minimize photorespiration,allowing them to perform efficiently at higher temperatures. Conversely,$C_3$ plants perform better at cooler temperatures. Other statements are correct: $1$. Increasing $CO_2$ concentration up to $0.05\%$ acts as a fertilizer for $C_3$ plants. $2$. Tomato and bell pepper are greenhouse crops grown in $CO_2$-enriched environments. $3$. Light saturation for $CO_2$ fixation occurs at $10\%$ of full sunlight,except for plants in shade or dense forests.

With reference to factors affecting the rate of photosynthesis,which of the following statements is not correct?

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