Arthropods have bilateral symmetry. When divided into two equal sections, both sides of the arthropod body are mirror images of each other. More » Pets & Animals Bugs Beetles

Chordates have bilateral symmetry, which means that the left side of their bodies are symmetrical to the right side, and vice versa. All chordates are monophytic, meaning that they share a single common ancestor. Chordat... More » Science Biology

Some sponges have radial symmetry, but many species are irregular in shape and have no symmetry at all. Two simpler groups of sponges, known as asconoid and syconoid sponges, often have radial symmetry, but members of th... More » Pets & Animals Marine Life
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The characteristics of arthropods include an exoskeleton, well-developed sense organs, jointed appendages, tagmata body regions, a ventral nervous system and bilateral symmetry. Scientists believe that the ancestors of t... More » Pets & Animals Bugs Beetles

Spanish fly is the common name for a type of beetle in the Melodiae family, also known as the blister beetle. Spanish fly is best known for its reputed aphrodisiac and medicinal properties; however, the active ingredient... More » Pets & Animals Bugs Beetles

The number of lines of symmetry a triangle has depends on the type of triangle. An equilateral triangle has three lines of symmetry, while an isosceles has one line of symmetry, and a scalene triangle has none. More » Math Geometry Shapes

The number of lines of symmetry of a parallelogram depends on the type of parallelogram. A non-special parallelogram does not have any lines of symmetry. This includes any quadrilateral with two pairs of parallel and equ... More » Math Geometry