Question

What does A, B and C represents?

• A. A- Acoelomate, B- Pseudocoelomate, C- Coelomate
  
• B. A- Pseudocoelomate, B- Acoelomate, C- Coelomate
• C. A- Acoelomate, B- Coelomate, C- Pseudocoelomate
• D. A- Coelomate, B- Pseudocoelomate, C- Acoelomate

Answer 1

The correct option is A

A- Acoelomate, B- Pseudocoelomate, C- Coelomate

• A- Acoelomate animals which include flatworms and tapeworms have no body cavity as shown in figure A.
  
• B- Pseudocoelomates are a group of invertebrates with a three-layered body that has a fluid-filled body cavity (pseudocoelom) between the endoderm and the mesoderm (the innermost and middle tissue layers) which is shown in figure B. However the coelom is not lined by mesoderm on both sides.
• C- Coelomate animals refer to the animals where main body cavity is lined by mesoderm on both sides and is positioned inside the body to surround and contain the digestive tract and other organs which are shown in figure C.
• Thus, the correct answer is option A.