Cataphylls are

In which plant group are the sporophylls arranged on a central axis to form distinct compact structures called strobili or cones?

Identify the incorrect pair for Gymnosperms among the following:

In which plants does pollination occur exclusively through wind?

Cycas resembles angiosperms in having

Select the feature that distinguishes $Gnetum$ from $Cycas$ and $Pinus$ and shows affinities with angiosperms.