Question

What is light reaction also called as ?

Answer 1

Hi friend,
the light reaction is also called the Photo dependent reaction  as in this reaction sunlight is needed so it is called Photo dependent reaction. The clear division of labour occurs within the chloroplasts,i.e., the membrane system is responsible for the synthesis of ATP and NADPH(photochemical phase)
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Answer 2

Light reaction is also know as Photochemical reaction.
This reaction occurs in the Stroma.

This reaction occurs in two main steps:

Firstly the chlorophyll is activated when it is exposed to light energy by absorption of photons.

Then the absorbed energy is used to split water into Hydrogen and Oxygen releasing electrons.
This process is called Photolysis.

At the end the Hydrogen ions are used by NADP to form NADPH.
This process is called Photophosphorylation.

Hope it helps............