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Question

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

A
Perianth and two integument
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B
Embryo development and apical meristem
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C
Absence of resin duct and leaf venation
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D
Presence of vessel elements and absence of archegonia
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Solution

The correct option is D Presence of vessel elements and absence of archegonia
Gnetum is a genus of gymnosperms, the sole genus in the family Gnetaceae and order Gnetales. They are tropical evergreen trees, shrubs and lianas. Unlike other gymnosperms they possess vessel elements in the xylem. Cycas and Pinus do not have vessel element.

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