Question

2. If two similar potted plants A & B are taken such that:
Plant A is kept in the dark or a black box for 72 hours (3 days),
Plant B is kept in sunlight. lodine test is conducted with the leaves of both plants.
Which plant leaf tests positive for the test and Why?​

Answer 1

Answer:

Plant B

Explanation:

Because the leaf of plant b is getting sunlight and if it gets sunlight because the leaf can make its food which in science we call starch and iodine reacts with starch and the colour of leaf becomes blue black

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