Question

Read the statements and select the correct option :

(i) The circulatory system of arthropods is of closed type.

(ii) Parapodia in annelids help in swimming.

(iii) Phylum Mollusca is the second largest animal phylum.

(iv) Aschelminthes are dioecious.

• A. i and iii alone are wrong
• B. i alone is wrong
• C. iii alone is wrong
• D. iii and iv alone are wrong
• E. ii alone is wrong

Answer 1

The correct option is B i alone is wrong

B. i alone is wrong

EXPLANATION: Arthropods have an open circulatory system. In open circulatory system blood is not enclosed in the blood vessels, but it is pumped into a cavity, which is called hemocoel.