Symmetry in biology

A selection of animals showing a range of possible symmetries, including both radial and bilateral body plans

These sea anemones have been painted to emphasize their radial symmetry. (Plate from Ernst Haeckel's Kunstformen der Natur).

Lilium bulbiferum displays typical floral symmetry with repeated parts arranged around the axis of the flower.

Gastroenteritis viruses have radial symmetry, being icosahedral: A rotavirus, B adenovirus, C norovirus, D astrovirus.

Symmetry in biology is the balanced distribution of duplicate body parts or shapes within the body of an organism. In nature and biology, symmetry is always approximate: for example plant leaves, while considered symmetrical, rarely match up exactly when folded in half. Symmetry creates a class of patterns in nature, where the near-repetition of the pattern element is by reflection or rotation. The body plans of most multicellular organisms exhibit some form of symmetry, whether radial, bilateral, or spherical. A small minority, notably among the sponges, exhibit no symmetry (i.e., are asymmetric).

单词	Radially symmetric
释义	Radially symmetric 原声例句 PBS地球-动物趣闻 But why did some echinoderms become radially symmetric and develop this new body plan in the first place? 但是，为什么一些棘皮动物首先会变得呈放射状对称并发展出这种新的身体结构呢？英语百科 Symmetry in biology Symmetry in biology is the balanced distribution of duplicate body parts or shapes within the body of an organism. In nature and biology, symmetry is always approximate: for example plant leaves, while considered symmetrical, rarely match up exactly when folded in half. Symmetry creates a class of patterns in nature, where the near-repetition of the pattern element is by reflection or rotation. The body plans of most multicellular organisms exhibit some form of symmetry, whether radial, bilateral, or spherical. A small minority, notably among the sponges, exhibit no symmetry (i.e., are asymmetric).
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Radially symmetric

Symmetry in biology