Has left and right sides that are approximately mirror images.
"a type of arrangement of the parts and organs of an animal in which the body can be divided into two halves that are mirror images of each other along one plane only (usually passing through the midline at right angles to the dorsal and ventral surfaces). Bilaterally symmetrical animals are characterized by a type of movement in which one end of the body always leads" (66).
Body structure such that left and right sides are essentially mirror images
Divisible into equal halves by only one plane of symmetry; also called zygomorphic (Fig. 4.18).
The condition in which only the right and left sides of an organism, divided exactly down the back, are mirror images of each other. (Contrast with biradial symmetry.)
bi, twice, two + lateris, side; Gk. summetros, symmetry] Characterizing a body form with a central longitudinal plane that divides the body into two equal but opposite halves.
A body design found in most animals in which if an imaginary plane divided the body into left and right halves, each side would be a mirror image of the other..
the property of being symmetrical about a vertical plane
An animal body structure in which the right and left halves of an organism are approximately mirror images of each other. Most higher invertebrates and all vertebrates have members which are bilaterally symmetrical.
In animals, refers to those that have a single axis of symmetry.
The property of having two similar sides, with definite upper and lower surfaces and definite anterior and posterior ends.
having body symmetry such that the animal can be divided in one plane into two mirror-image halves. Animals with bilateral symmetry have dorsal and ventral sides, as well as anterior and posterior ends. having body symmetry such that the animal can be divided in one plane into two mirror-image halves. Animals with bilateral symmetry have dorsal and ventral sides, as well as anterior and posterior ends. Synapomorphy of the Bilateria.
A bodily symmetry in which opposite sides of a sagittal plane are mirror images of one another. Animals generally are bilaterally symmetrical.