Question

The circinate vernation is the characteristic feature of ferns. It refers to

• A. Coiling of young leaves
• B. Arrangement of leaves on stern
• C. Attachment of sori on leaves
• D. Heterophilly

Answer 1

The correct option is A Coiling of young leaves

The fern leaf, differs from the true leaf (euphyll) of the flowering plants in its vernation, or manner of expanding from the bud. In most ferns, vernation is circinate; that is, the leaf unrolls from the tip, with the appearance of a fiddlehead, rather than expanding from a folded condition. Vernation refers to the growing of a new leaf; circinate refers to the arrangement of the leaf, which is circular.