Question

multiple choice question
flexibility in movement of the body is a chief advantage to having a type of body cavity called a
gastrula.
blastula.
pseudocoelom.
coelom.

Explanation:

• A gastrula is an embryonic stage, not a body cavity.
• A blastula is also an embryonic stage, not a body cavity.
• A pseudocoelom is a body cavity, but a coelom provides more flexibility in movement as it is a true body cavity lined by mesoderm on both sides. Organs can move more freely within a coelom, allowing for more complex and flexible body movements compared to a pseudocoelom.

Answer:

coelom.