What type of symmetry is exhibited by humans?

Humans exhibit bilateral symmetry, which means that their body can be divided into two identical halves along a central axis. This type of symmetry is typical of many animals, including vertebrates like mammals, birds, and reptiles. In humans, bilateral symmetry is seen in the arrangement of paired structures, such as arms, legs, eyes, and ears, which are positioned symmetrically on either side of the body. This symmetry is important for various biological functions, including movement, sensory balance, and overall body coordination.

In contrast, radial symmetry, as seen in organisms like jellyfish and sea urchins, involves body parts arranged around a central axis, suitable for creatures that are often sessile or free-floating. Spherical symmetry is found in organisms that are roughly spherical, like some protozoa, but does not apply to humans. Asymmetrical organisms, without any form of symmetry, are rare and typically refer to forms such as certain sponges or other basal life forms. Therefore, the nature of human anatomy and how it is constructed supports the classification as exhibiting bilateral symmetry.