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Select one of the following pairs of imp...

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

A

perianth and two integuments

B

embryo development and apical meristem

C

absence of resin duct and leaf venation

D

presence of vessel elements and absence of Archegonia

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The correct Answer is:
D
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