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Select one of the following pairs of important features distinguishing Gnetum from Cycas and Pinus and showing affinities with angiosperms
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- absence of resin duct and leaf venation
- presence of vessel elements and absence of archegonia
- perianth and two integuments
- embryo development and apical meristem
Correct Option: B
The important features distinguishing Gnetum from Cycas and Pinus and showing affinities with angiosperms are presence of vessel elements and absence of archegonia.
