Symmetry in biology Most radially symmetric animals are symmetrical about an axis extending from the center of the oral surface, which contains the mouth to the center of the opposite, , end. Radial symmetry is especially suitable for sessile animals such as the sea anemone, floating animals such as jellyfish, and slow moving organisms such as starfish. Animals in the phyla Cnidaria and Echinodermata are radially symmetric, although many sea anemones and some corals have bilateral symmetry defined by a single structure, the siphonoglyph. Many flowers are radially symmetric or actinomorphic. Roughly identical flower parts – petals, sepals, and stamens – occur at
Anelida and Arcite Anelida and Arcite Anelida and Arcite is a 357-line English poem by Geoffrey Chaucer. It tells the story of Anelida, queen of Armenia and her wooing by false Arcite from Thebes, Greece. Although relatively short, it is a poem with a complex structure, with an invocation and then the main story. The story is made up of an introduction and a complaint by Anelida which is in turn made up of a proem, a strophe, antistrophe and a conclusion. After the complaint there are a few lines which continue the story, but these may have been added by a later