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Ephedra and Gnetum are exceptions to gym...

Ephedra and Gnetum are exceptions to gymnosperms as they show

A

Double fertilization

B

Siphonogamy

C

Aggregation of sporophylls

D

Presence of ovules .

Text Solution

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The correct Answer is:
A
In Gnetum gnemon, Charmichael and Friedman (1995) have reported that the two male gametes of a pollen tube fuse with different nuclei. In Ephedra one male gamete fuses with egg while other fuses with venter canal nucleus (Khan, 1943).
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