Question:

In photosynthesis energy from light reaction to dark reaction is transferred in the form of :-

Updated On: Jun 23, 2024

ADP
ATP
RuDP
chlorophyll.

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The Correct Option is B

Solution and Explanation

Photosynthesis consists of light dependent phase and light independent phase or dark reaction. In light dependent phase occurs in grana fraction of chloroplast. It involves cyclic and non-cyclic photophosphorylation where assimilatory powers (ATP and NADPH2) are produced. In dark reaction, which occurs in stroma froction of chloroplast, actual reduction of CO2 to carbohydrates takes place using the assimilatory powers (ATP and NADPH2) produced in the light dependent phase. It needs 18 ATP and 12 NADPH2 molecules to produce one molecule of glucose.

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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)

List-I (Conversion)		List-II (Shape/geometry)
(A)	1 mol of H₂O to O₂	(I)	3F
(B)	1 mol of MnO^-₄ to Mn²⁺	(II)	2F
(C)	1.5 mol of Ca from molten CaCl₂	(III)	1F
(D)	1 mol of FeO to Fe₂O₃	(IV)	5F