Question

Assertion [A]: Nematodes are pseudocoelomates. 
Reason [R]: Perivisceral space is filled with parenchyma derived from mesoderm. 
 

• A. A and R are true. R is correct explanation for A.
• B. A and R are true. R is not correct explanation for A.
• C. A is true. But R is false.
• D. A is false. But R is true.

Hint:

Nematodes are an important group of organisms in biology due to their unique body structure and development.

Answer 1

The Correct Option is C

The assertion that nematodes are pseudocoelomates is correct. They possess a body cavity that is not entirely lined with mesoderm.
The reason is incorrect because the perivisceral space in nematodes is not filled with parenchyma but is a fluid-filled pseudocoel.
Final Answer:
A is true. But R is false.