A) Nawaschin
B) Starsburger
C) Emerson
D) none of these
Correct Answer: A
Solution :
The two gametes released by the pollen tube move in opposite direction most probably the streaming currents of cytoplasm. One gamete fuses with egg called fertilization and second fuses with two polar nuclei called triple fusion i.e., fertilization and triple fusion jointly called double fertilization. It was first observed by Nawaschin (1848) in Lilium and Fritillaria. This phenomenon is unique to angiosperm.
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