AP BIOLOGY

Detailed explanation-1: -Most fern fronds develop from a tightly coiled spiral known as a fiddlehead, crozier or koru. As each frond develops, it gradually unfurls from the spiral. The silver fern koru is often adopted as a design motif.

Detailed explanation-2: -Fiddleheads or fiddlehead greens are the furled fronds of a young fern, harvested for use as a vegetable.

Detailed explanation-3: -Fiddleheads, also known as fiddlehead ferns, are a springtime delicacy consisting of the tightly coiled fronds of a new fern. They’re named because of their resemblance to the curled decoration at the end of a stringed instrument (a perfect example of biomimicry).

Detailed explanation-4: -noun. fid·dle·head ˈfi-dᵊl-ˌhed. : one of the young coiled fronds of some ferns (such as the ostrich fern) that are often cooked and eaten as a vegetable. Before the tightly coiled frond of the young fern uncurls, it is called a fiddlehead because of its resemblance to the scrolled head of a violin.

Detailed explanation-5: -Leaves. The leaves of ferns are often called fronds. Fronds are usually composed of a leafy blade and petiole (leaf stalk).