Cotton is a part of daily life. Half of the world's textiles today are made of cotton. It is the most important fibre plant in the world. Each fibre is produced by the outgrowth of a single epidermal cell. The fibres are actually hairs that grow out of the seed coats. Some epidermal cells make long lint hairs. Other cells stop growing before they become too long, we call these fuzz hairs. So, cotton is a epidermal hairs of seeds and not from stem, fruit and root.
Thus, the correct answer is option B.
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