Question

DATE:
HOLIDAY HOMEWORK
B Biology
1) Take two potted plants Keep
one potted plant and
dark room and other in the same sunlight fora
week observe the difference in the
colour of the leaves Now, pluck a leaf from both
the potted plants and label them and A and B. Make
an iodine and test for the presence of starch. Write
observations in case of both leaf A and leaf B
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Answer 1

Explanation:

The hot water kills the leaf and the alcohol breaks down the chlorophyll, taking the green color out of the leaf. When you put iodine on the leaves, one of them will turn blue-black and the other will be a reddish-brown. Iodine is an indicator that turns blue-black in the presence of starch. The leaf that was in the light turns blue-black, which demonstrates that the leaf has been performing photosynthesis and producing starch.