Q2 of 56 Page 21

Give reasons (AS1)

Why photosynthesis is considered as the basic energy source for most of living world?

Photosynthesis is considered as the basic energy source for most of the living world because all organisms directly/ indirectly depend on the plants for their food and nutrition.


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1

Write differences between (AS1)

Light reaction – dark reaction

 1

Write differences between (AS1)

Chlorophyll – chloroplast

 2

Give reasons (AS1)

Why is it better to call the dark phase of photosynthesis as a light independent phase?

 2

Give reasons (AS1)

Why is it necessary to destarch a plant before performing any experiment on photosynthesis?