Which of the following kingdoms is characterized by the absence of a cell wall?

Animals in which the body cavity is absent are known as?

The type of symmetry in which the body of an animal can be divided into two identical left and right halves by only one plane is called:

Assume that a pencil box held in your hand represents a plant cell. In how many possible planes can it be cut? Indicate these cuts with the help of line drawings.

On the basis of organization,animals are grouped into

Radial symmetry is generally exhibited by animals that have: