Question

which class of mollusca shows tendency towords a closed cieculatory system?

Answer 1

Class Cephalopoda. Cephalopods are the most "advanced" of the mollusks. Squids and octopi are the prime example of cephalopods. They have a closed circulatory system so they can move much faster - the closed circulatory system allows more efficient "pinpointing" of blood.

Answer 2

ANSWER:

Class cephalopoda of mollusca shows tendency towords a closed cieculatory system.

EXPLANATION:

• The closed circulatory system is found in molluscan class cephalopoda which includes species like squid, octopus or nautilus.
• Closed circulatory system refers to blood found in all vessels which is of different size and variation in the wall thickness.
• The blood is pumped through heart vessels and does not move or fill the body cavity.
• So there are certain species of mollusca showing the tendency towards the closed circulatory system rather than open circulatory system.