Residual persistent nucellus is known as

Perisperm

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Integument

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Pericarp

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None of the above

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Solution

The correct option is A Perisperm
A. The nucellus is generally used up during the development of embryo, but in some cases, it remains outside the endosperm in the form of a thin layer, called perisperm.
B. Integuments- These are outer covering of ovule which provide protection to the developing embryo.
C. Pericarp or fruit developed from wall of the ovary.
So, the correct answer is 'Perisperm'.

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