The part of the de-starched leaf enclosed in a test tube co…

Biology Photosynthesis in Higher Plants Single Correct MCQ

Published on: August 20, 2026

The part of the de-starched leaf enclosed in a test tube containing KOH soaked cotton does not give black colour with starch. Which of the following statement correctly describes the reason for the negative starch test?

The presence of CO 2 is required for photosynthesis. and

Carbon dioxide is absorbed by KOH. are true.

KOH absorbs glucose formed during photosynthesis.

B oth

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