Which of the following options describes perisperm?
A
Formed as a result of triple fusion
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B
Formed as a result of syngamy
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C
Residual nucellus
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D
None of the above
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Solution
The correct option is C Residual nucellus Cells enclosed within the ovule are called nucellus. These cells have abundant reserve food materials. After fertilisation the nucellus generally degenerates.
However in some plants the nucellus persists in the seed and it is called perisperm.
Primary endosperm nucleus (PEN) and zygote are formed as a result of triple fusion and syngamy.