The dark reaction in photosynthesis is called so because_____.

it cannot occur during daytime

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it is light dependent

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it is light independent

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occurs rapidly at night

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Solution

The correct option is C
it is light independent

Dark reaction is a light-independent process in which sugar molecules are formed from carbon dioxide and water molecules. This reaction occurs in the stroma of the chloroplast where it utilizes the products of the light reaction. Since this is not directly dependent on light, it is called as the dark reaction.

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Question 08
Dark reaction in photosynthesis is called so because
(a) it can occur in dark also
(b) it does not depend on light energy
(c) it cannot occur during day light
(d) it occurs more rapidly at night

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

Q. Photosynthesis involves a series of reactions. The light-dependent reactions occur in the presence of light while the light-independent reactions can occur in the light or dark.
Which of the following are common to only the light-dependent reactions?

Q. Which of the following statements correctly describes the light reactions and dark reactions taking place during photosynthesis?
(i) Light reactions occur in grana thylakoids whereas dark reactions occur in stroma of chloroplasts.
(ii) Light reactions generate ATP and

N A D P H_{2}

whereas dark reactions consume ATP and

N A D P H_{2}

.
(iii) Oxygen is released as a by-product during the light reactions as well as dark reactions.
(iv) Light reactions take place in the presence of light and dark reactions are independent of the products formed during light reactions.

Which of the following molecules is produced during the light-dependent reactions of photosynthesis and used in the light-independent reactions?

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