Question

Molluscs with closed type of blood circulatory system are included in the class

• A. Scaphopoda
• B. Gastropoda
• C. Pelecypoda
• D. Cephalopoda

Hint:

Circulatory system in Mollusca: \[ \boxed{ \begin{aligned} &\text{Cephalopoda} &&\rightarrow \text{Closed circulation} &\text{All other classes} &&\rightarrow \text{Open circulation} \end{aligned} } \]

Answer 1

The Correct Option is D