[Presence of vessel elemen...] Select one of the following pairs of important features distinguishing Gnetum from Cycas and Pinus a

For Competitive Exams

Select one of the following pairs of important features distinguishing Gnetum from Cycas and Pinus and showing affinities with angiosperms:

Presence of vessel elements and absence of archegonia

Absence of resin duct and leaf venation

Embryo development and apical meristem

Perianth and two integuments

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