Question

Write the differences between open circulatory system and closed circulatory system.​

Answer 1

Answer:

in open circulatory system the blood does not flow in any blood vessels but the organs are simply bathed into the blood.

But in a closed circulatory system the blood flows in blood vessels and reaches to organs by them only.

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Answer 2

Some points about open circulatory system are as follows-

• Speed of the blood in this is less.
• Blood pressure is also less in the open circulatory system.
• In it each and every tissue is in the direct contact of the circulatory fluid.
• Through large vessels blood is passes which is pumped by the heart which is known as sinuses.
• It is very less efficient.
• Examples- Arthropoda, Mollusca (except Cephalopoda) etc.

Some points about closed circulatory system are as follows-

• Speed of the blood more in this.
• Blood pressure is more compared to open circulatory system.
• Through a closed network of the blood vessels blood is pumped and circulated by the heart.
• It is more efficient.
• Each and every tissue is not in the direct contact with the blood.
• Examples- Annelida, All chordates, Cephalopoda etc.