A) angiosperms
B) gymnosperms
C) thallophytes
D) all plants
Correct Answer: A
Solution :
Double fertilization or triple fusion is characteristic of angiosperms only. It was first discovered by Nawaschin (1898) in Fritillaria and Lilium. In 1899, Guignard also reported double fertilization. Double fertilization means fusion of one male gamete with one egg cell and fusion of another male gamete with polar nuclei or secondary or digenerative nucleus.
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