Question

If you cut Planaria vertically, you get two equal halves. What does this indicate?

• A. The organism is symmetrical
• B. The organism is radially symmetrical
• C. The organism is spherically symmetrical
• D. The organism is bilaterally symmetrical

Answer 1

The correct option is D

The organism is bilaterally symmetrical

Planaria is a flatworm and hence, belongs to Phylum Platyhelminthes. This group includes bilaterally symmetrical organisms that can be vertically cut into two equal halves. This means that the left and right halves of the organism have the same basic design, and look like mirror images of each other.