EVERYDAY SCIENCE

Detailed explanation-1: -The leaves of ferns are often called fronds. Fronds are usually composed of a leafy blade and petiole (leaf stalk).

Detailed explanation-2: -Pteridopsida (true ferns) have more than 10, 000 species and make up the majority of living monilophytes (all classes of Pteridophyta except lycophytes). Their leaves are called fronds because of apical growth; young leaves are coiled into fiddleheads (Figure 6.2. 2).

Detailed explanation-3: -A compound leaf-that is, a leaf with many fine and deep divisions-is a frond, such as on ferns and palm trees. Although commonly referring to the leafy part of a fern or palm, the noun frond can also refer to anything that has a similar shape to a palm frond or fern frond.

Detailed explanation-4: -Almost all ferns have pinnate leaves with one central axis and smaller branches. Such leaves are also called as “frond".

Detailed explanation-5: -The ferns are also referred to as Polypodiophyta or, when treated as a subdivision of Tracheophyta (vascular plants), Polypodiopsida, although this name sometimes only refers to leptosporangiate ferns.