Question

A variegated leaf with green and yellow patches in used for an experiment to prove that
chlorophyll is required for photosynthesis. Before the experiment the green portions (A), and the pale yellow portions (B), are observed. What will be the color of ‘A’ just before and after the starch test?

Answer 1

Answer:

The colour of A i.e. the green portion before the starch test is pale yellow because chlorophyll needs to be removed before the starch test, and andafter the test it's colour is blue-black because of the reaction of iodine andstarch present in A.

Answer 2

Answer:

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