Question

To what extent has the presence of a true coelom in animals changed over the course of evolution?

The presence or absence of a true coelom appears not to have changed during the course of evolution.
The presence or absence of a true coelom appears to have changed exactly once during the course of evolution.
It is impossible to tell whether the presence or absence of a true coelom has changed during the course of evolution.
The presence or absence of a true coelom appears to have changed multiple times during the course of evolution.

Answer 1

The presence or absence of a true coelom appears to have changed multiple times during the course of evolution.

Step-by-step explanation:

A coelom is a fluid-filled body cavity that is completely lined by tissue created from the mesoderm, the middle layer of the primary cells found in an embryo. It is typically found in multicellular organisms, which are living things that have more than one cell.

Answer 2

Option D is the correct answer.

To what extent has the presence of a true coelom in animals changed over the course of evolution?

A coelom is a body cavity that is formed from the mesoderm tissue.

Option D - The presence or absence of a true coelom appears to have changed multiple times during the course of evolution.