Question

Take a potted plant with broad leaves. Take two square strips of black paper. Cover a part of leaf with these papers and secure it eith paper clips. Keep the plant in sunlight for 2-5 days . What is the colour difference of covered and uncovered parts of leaf?

Answer 1

Answer:

here is your observation

Explanation:

• when you test the leaf for starch with iodine solution the parts exposed to sun will turn blue black in color while the part which is clipped with paper will turn brown in color.

reason this due to rhe absence of starch in the part closed with paper .

conclusion - from this experiment we can conclude that sunlight is essential for photosynthesis

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