Which of the following is an example of an acoelomate?

Correct option is C

The correct answer is (C) Platyhelminthes

Explanation:
• Acoelomates: These are animals that lack a body cavity (coelom). The space between the body wall and the digestive tract is filled with tissue (parenchyma).
• Platyhelminthes (Flatworms) are the classic example of acoelomates.
• They are dorso-ventrally flattened.

Information Booster:
• Coelom: It is a fluid-filled body cavity lined by mesoderm. It acts as a shock absorber and allows organs to grow.
• Evolutionary Significance: Platyhelminthes are the first triploblastic animals (having three germ layers) but still lack a coelom.

Additional Knowledge:
• Aschelminthes (Option A): These are Pseudocoelomates (false coelom), where the body cavity is not lined by mesoderm.
• Annelids (Option B) & Molluscs (Option D): These are Coelomates (true coelom), possessing a true body cavity.