In one of the following, the seed coat is thick and hard. Which is it?

bean

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gram

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maize

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coconut

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Solution

The correct option is D
coconut

Seed coats develop from the covering of the ovules. After fertilization, when the ovules turn into seeds, the outer coverings/coats of the ovule now become the seed coats. During this process, they undergo many changes in the appearance and texture. The seed coat in mature seeds can be a paper-thin layer (groundnut, maize or peas) or it may become thick and hard (coconut, honey locust).

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