Ephedra and Gnetum are exceptional gymnosperms as they show

Double fertilization

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Siphonogamy

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Aggregation of sporophylls

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Presence of ovules

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A Double fertilization
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). Hence they show double fertilization.
So the correct option is A.

Suggest Corrections