A) Double fertilization
B) Apomixis
C) Vegetative reproduction
D) Tissue culture
Correct Answer: A
Solution :
Clone is an individual obtaining from single parent through asexual reproduction. It is possible through apomixis, vegetative reproduction and tissue culture. The process of fusion of two male gametes in a single embryo sac is called double fertilization. It is found in sexual reproduction of angiosperms only and discovered by Nawaschin (1898).
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