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An example of a seed with endosperm, perisperm and caruncle is
A
Castor
B
Cotton
C
Coffee
D
Lily
Detailed Solution
Castor seed is endospermic: it has a white, oily endosperm surrounding the embryo.
At the micropylar end of the castor seed there is a white spongy outgrowth of the integument called the caruncle, which absorbs water during germination.
A thin remnant of the nucellus persists in the castor seed as the perisperm.
Cotton, coffee and lily seeds do not have all three structures together.
Hence the example is castor.
At the micropylar end of the castor seed there is a white spongy outgrowth of the integument called the caruncle, which absorbs water during germination.
A thin remnant of the nucellus persists in the castor seed as the perisperm.
Cotton, coffee and lily seeds do not have all three structures together.
Hence the example is castor.