What do you observe in the experiment of dropping a fist of Bengal gram seeds in water? Do you know why the spoilt seeds are lighter in weight?

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Solution

When Bengal grams seeds are soaked in water the seed coat first absorbs water. It swells and becomes tender. This is followed by germination after some days in which radicle sprouts from the seed.
Spoilt seeds are eaten by insects or rodents. This creates holes in them hence they become light in weight and float.

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