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Difference between C3, C4 and CAM Cycle

The dark reac...

Question

The dark reaction of photosynthesis occurs in

A

Thylakoid.

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B

Grana.

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C

Inner mambrance.

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D

Stroma.

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Solution

The correct option is D Stroma.
The dark reaction of photosynthesis takes place in the stroma of the chloroplast. The enzymes of stroma which are present outside the grana lamellae do not require light but require ATP and NADPH $_{2}$ produced in the light reaction. It is also known as light independent reaction.
Thus, the correct answer is option D.

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Similar questions

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.

Q. Dark reaction of photosynthesis occurs in

Q. Which of the following occurs in dark reaction of photosynthesis?

Q. Plants obtain carbon dioxide from the atmosphere through these structures.

(a) Grana
(b) Stroma
(c) Stomata
(d) Thylakoid

Q. Assertion :Dark reaction occurs only at night in the stroma of chloroplast. Reason:

C O_{2}

fixation occurs only during

C_{3}

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Difference between C3, C4 and CAM Cycle

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