Question:

Optimum temperature conditions for photosynthesis in $C_{3}$ and $C_{4}$ plants are respectively

Updated On: Jul 6, 2022

$10^\circ C-25^\circ C$ and $30^\circ C-45^\circ C$
$30^\circ C-45^\circ C$ and $10^\circ C-25^\circ C$
$0^\circ C-10^\circ C$ and $10^\circ C-30^\circ C$
$25^\circ C-30^\circ C$ and $40^\circ C-50^\circ C$

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The Correct Option is A

Solution and Explanation

Active site of $RuBisCO$ for carboxylation and oxygenation is the same. The enzyme has more affinity for $CO_{2}$ as compared to oxygen. Active oxygenation occurs only when $CO_{2} : O_{2}$ ratio favours it.

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Notes on Photosynthesis in higher plants

Concepts Used:

Photosynthesis in Higher Plants

Processes Of Photosynthesis in Higher Plants:

Photosynthesis in higher plants involves the following processes:

Light Reaction
Dark Reaction

Light Reaction:

This phenomenon occurs in the presence of light.
The pigment absorbs light and produces energy in the form of ATP.
The process involves- absorption of light, water splitting, the release of oxygen, and formation of ATP and NADPH.

Dark Reaction:

This process occurs in the absence of light in the stroma of the chloroplasts. The following cycles are involved in the process:

Calvin Cycle (C3 Cycle)
C4 Cycle (Hatch and Slack Pathway)