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A selection of animals showing a range of possible body symmetries, including asymmetry, radial, and bilateral body plans Illustration depicting the difference between bilateral , radial (actinomorphic flowers) and spherical (coccus bacteria) symmetry. Symmetry in biology refers to the symmetry observed in organisms, including plants, animals ...
This definition is similar to the historical descriptor Coelenterata, which has also been proposed as a group encompassing Cnidaria and Ctenophora. [ 5 ] [ 6 ] Although radial symmetry is usually given as a defining characteristic in animals that have been classified in this group, there are clear exceptions and qualifications.
In biology, the notion of symmetry is also used as in physics, that is to say to describe the properties of the objects studied, including their interactions. A remarkable property of biological evolution is the changes of symmetry corresponding to the appearance of new parts and dynamics.
Satyrium carneum.Ground orchid with typical zygomorphic floral anatomy. Zygomorphic ("yoke shaped", "bilateral" – from the Greek ζυγόν, zygon, yoke, and μορφή, morphe, shape) flowers can be divided by only a single plane into two mirror-image halves, much like a yoke or a person's face.
English: Illustrating different forms of symmetry in biology - the three main forms (bilateral, radial and spherical). Cartoon form generated using shapes from biorender. To be used in the symmetry in biology page.
Rotational symmetry, also known as radial symmetry in geometry, is the property a shape has when it looks the same after some rotation by a partial turn. An object's degree of rotational symmetry is the number of distinct orientations in which it looks exactly the same for each rotation.
Symmetry in biology#Radial symmetry To a section : This is a redirect from a topic that does not have its own page to a section of a page on the subject. For redirects to embedded anchors on a page, use {{ R to anchor }} instead .
Radial artery, the main artery of the lateral aspect of the forearm; Radial nerve, supplies the posterior portion of the upper limb; Radial symmetry, one of the types of distribution of body parts or shapes in biology; Radius (bone), a bone of the forearm