Which of the following statement about dark reaction is correct?

They occur in darkness.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

They are not light dependent

No worries! We‘ve got your back. Try BYJU‘S free classes today!

They are dependent upon the products synthesized during light reaction.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

All of the above

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B They are dependent upon the products synthesized during light reaction.
Biosynthetic phase (Dark or Black Man's reaction) catalyses the assimilation of $C O_{2}$ to carbohydrates.These reactions occur in stroma or matrix of chloroplasts and all the enzymes required for the processes are present in the stroma/matrix of chloroplasts.These reactions do not require light, instead assimilatory power (ATP and NADPH) produced during photochemical (light) phase is used in fixation and reduction of $C O_{2}$ However, this should not be construed to mean that they occur in darkness or that they are not light dependent.

Suggest Corrections

Similar questions

N A D P H_{2}

N A D P H_{2}

	Light reaction	Dark reaction
i	These are also called as biosynthetic phase	These are also called as photochemical phase
ii	These reaction occur over thylakoids.	These reaction occur in stroma of chloroplasts.
iii	These produce assimilatory power i.e. $N A D P H_{2}$ and ATP	These consume $N A D P H_{2}$ and ATP.
iv	These are direction dependent upon light.	These depend upon the products synthesised during light reaction

Choose the correct option that describes the reactions involved in photosynthesis.

Statement 1: There are two reactions: Light and Dark

Statement 2: Dark reactions occur only during night time

Statement 3: Calvin-Benson Cycle is a part of the dark reaction

Question 26
Which products formed during the light reaction of photosynthesis are used to drive the dark reaction?

Join BYJU'S Learning Program