Which type of plants would show higher rate of photosynthesis in low temperature and high $C O_{2}$ concentration?

$C_{4}$ plants

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CAM plants

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Both $C_{3}$ and $C_{4}$ plants.

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$C_{3}$ plants

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Solution

The correct option is D
$C_{3}$ plants

When water supply does not restrict growth, $C_{3}$ plants can accumulate dry matter more rapidly in elevated $C O_{2}$ concentrations than ambient $C O_{2}$ concentrations. This is primarily because the rate of net photosynthetic carbon reduction by Rubisco is increased by increased substrate availability and partly because the rate of oxygenation by Rubisco (photorespiration) is reduced.

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C O_{2}

Question 09
PEP is primary $C O_{2}$ acceptor in
(a) $C_{4}$ plants (b) $C_{3}$ plants
(c) $C_{2}$ plants (d) both $C_{3} a n d C_{4}$ plants

Which type of plants would show higher rate of photosynthesis in low temperature and high $C O_{2}$ concentration?

CO2 fixation rate at light intensity in- C3 and C4 plants

C_{3}

C_{4}

C A M

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