Question

Differentiate between the following:
Light reaction and dark reaction

Answer 1

Light reaction:

Light reaction is the first stage of photosynthesis.

Dark reaction:

Dark reaction is the second stage of photosynthesis.

Light reaction	Dark reaction
1. Light is essential for light reaction.	1. Light is not necessary for dark reaction.
2. Light reaction occurs in grana.	2. Dark reaction occur in stroma.
3. The energy utilised is sunlight.	3. Energy released from the light reaction is used in dark reaction.
4. ATP and oxygen are released in light reaction.	4. Simple sugars like glucose are formed in dark reaction.