Question
Biology Question on morphology of flowering plants
An example of a seed with perisperm and caruncle is
A
Castor
B
Coffee
C
Lily
D
Cotton
Answer
Castor
Explanation
Solution
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.