Question

Bilaterally symmetrical organisms include:

• A. Planaria
• B. Roundworms
• C. Humans
• D. Arthropods
• E. All of the above

Answer 1

The correct option is E All of the above

• Bilateral symmetry is a basic body plan in which the left and right sides of the organism can be divided into approximate mirror images of each other along the midline.
• So, if the body of the animal can be divided into identical halves in only one plane then the animal is bilaterally symmetrical.
• Planaria, roundworm, human and prawn show the bilateral form of symmetry.

Thus, the correct answer is option E.