Select one of the following pairs of importan | vedclass

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(D) $Gnetum$ is considered the most advanced gymnosperm because it exhibits several characteristics similar to angiosperms.In most gymnosperms,the xyl

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Presence of vessel elements and absence of archegonia

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(D) $Gnetum$ is considered the most advanced gymnosperm because it exhibits several characteristics similar to angiosperms.In most gymnosperms,the xylem consists of tracheids and xylem parenchyma,but they lack vessels.$Gnetum$ possesses vessel elements in its xylem,which is a characteristic feature of angiosperms.Furthermore,$Gnetum$ lacks archegonia in its female gametophyte,which is another significant similarity to the angiosperm life cycle.Therefore,the presence of vessel elements and the absence of archegonia are key features that distinguish $Gnetum$ from $Cycas$ and $Pinus$ and show its evolutionary affinity with angiosperms.

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

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