describe the morphological and reproductive structures of a typical fern
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Answer:
Ferns can have some very unusual forms and structures. The following describes fern structure and forms that people typically encounter
The leaves of ferns are often called fronds. Fronds are usually composed of a leafy blade and petiole (leaf stalk). Leaf shape, size, texture and degree of complexity vary considerably from species to species.
The midrib is the main axis of the blade, and the tip of the frond is its apex.
The blade may be variously divided, into segments called pinnae; single leaflets are pinna. Pinna may be further divided, the smallest segments are pinnules.
As new fronds emerge, generally in the spring, they unroll, these unrolling fronds are called fiddleheads.
Depending on the species, fern leaves display a wide array of divisions. Various degrees of leaf divisions are shown in this series of frond silhouettes.
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