Question

What is the definition of bilateral symmetry?

Answer 1

Bilateral symmetry:

1. When the body plan of an animal can be divided along a line that separates the animal's body into right and left halves that are nearly identical of each other, it is said to have bilateral symmetry.
2. The body plan of an organism with bilaterally symmetrical is divided into identical mirror halves in the sagittal plane.
3. Organs and other components of the interior of the body are not usually symmetrical.
4. Organisms with bilateral symmetry fall within the taxonomic category Bilaterians.
5. The orchid and pea families are examples of plants exhibiting bilateral symmetry.
6. Other examples include phylum Platyhelminthes, Mollusca, Cnidaria, Arthropoda etc.