Question

Double circulation, i.e., blood flows through the heart twice during one cycle of passage through the body, is exhibited by
A) EARTHWORM. B) FISH.
C) SHARK. D) RABBIT​

Answer 1

Answer:

Rabbit is the answer of your question

Answer 2

Double circulation is exhibited by- D) Rabbit.

• Double circulation is seen in warm blooded organisms like mammals and birds and cold blooded animals like amphibians and reptiles. This is because they have a separate chamber for oxygenated and deoxygenated blood.
• Rabbit is a warm blooded animal that belongs to the class Mammalia under the Phylum Chordata. It has a four chambered heart in which blood pumps twice in its one cycle throughout the body.
• Single circulation is seen in fishes such as sharks that have two chambered heart.
• An earthworm has a simpler and closed circulatory system in which no double circulation occurs.