Question

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CBSE Class 10 Science Exam 2019: Important questions.

Q. Dark reaction of photosynthesis does not need light. Do plants undergo dark reaction at night? Explain.​

Answer 1

Answer:

Dark reaction of photosynthesis does not need light. ... This reaction represents the transfer of matter: carbon dioxide from the atmosphere, water from the soil or atmosphere, into sugar in the plant and oxygen back into the atmosphere. Light reactions need light to produce organic energy molecules (ATP and NADPH)

Answer 2

$<font color = pink> reaction is that light reaction is the first stage of photosynthesis, which traps light energy in order to produce ATP and NADPH whereas dark reaction is the second stage of photosynthesis, which produce glucose by using the energy form ATP and NADPH produced from the light$