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5.Morphology of Flowering Plants
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An example of a seed with endosperm, perisperm, and caruncle is
A
coffee
B
lily
C
castor
D
cotton.
(AIPMT-2009)
Solution
(c) : In castor seed testa and tegmen are united together. Seed coat is tough and bright due to scleroprotein. Over narrower end a brownish pad is found which is called caruncle. Caruncle is carbohydrate in nature. This protects micropyle and develops as an integumental outgrowth after fertilization.Below seed coat a very thin membrane is found over kernel and called perisperm (the persistant nucellus).Below perisperm there is a large, white, swollen and oily mass called endsoperm.
Standard 11
Biology
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