Question

7th class chapter 1 science answers
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Answer 1

Explanation:

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Answer 2

Answer:

as we now that starch indicates photosynthesis in plants

when plants carrieout photosynthesis they make food by the help of carbondioxide and water with reaction to sunlight and this food store in the leaves as starch because food synthesise in the leaves

so now

take two plants give name Aand B to them.put plant A in sunlight for synthesise starch and put plant B in dark room where sunlight will not reach.after some days

Take the leaf of plant A and B.Now put some drops of iodine solution on both leaves.what will you observe with both leaves.

Leaf A gives blue black colour and leaf B does not give any colour

Leaf A gives blue black colour because we put ten that in sunlight so that can synthesized food