Answer:
The man and the insect have bilateral symmetry. The other two organisms have radial symmetry.
Explanation:
Body symmetry can be defined as similarities between the external parts of a given organism when they are separated by real or imaginary planes that pass through its center. We call the plane of symmetry the surface capable of dividing the organism into two parts. An animal may present radial symmetry, bilateral or not symmetry. This last case is not very common, occurs in a few species, such as some sponges.
Radial symmetry is one in which the animal's body can be divided into several planes arranged around a longitudinal axis. Animals with this kind of symmetry are called radiated. Given this characteristic, we cannot say that they have dorsal and ventral region, left and right side or head and tail. This group is represented by the cnidarian and adult echinoderms.
Bilateral symmetry is one in which the animal has two similar parts, being divided only by a single plane of symmetry. Humans present bilateral symmetry, with the left and right sides being the mirror image of each other. Examples of animals with this characteristic are arthropods, flatworms and echinoderm larvae.
Thus, we can conclude that in relation to the image shown in the question above, the man and the insect have bilateral symmetry. The other two organisms have radial symmetry.
