When the body is externally and internally divided into segments,it is called

What type of body organization is shown in the given figure?

$A$ complete digestive tract is defined as ........

The lining of the coelom is derived from which germ layer?

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.

How are triploblastic animals classified based on their body cavity (coelom) organization?