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

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

 2203  232 AIPMTAIPMT 2002Photosynthesis in Higher Plants Report Error

Solution:

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.