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Question
Closed circulatory system is present in:
Closed circulatory system is present in:
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Solution
The correct option is D Annelida
- Open circulatory system is a type of circulatory system which is common to Mollusca, Nematoda and Arthropoda.
- Open circulatory systems pump blood into a hemocoel with the blood diffusing back to the circulatory system between cells. Blood is pumped by a heart into the body cavities, where tissues are surrounded by the blood.
- Closed circulation is maintained at all times in vessels of varying sizes and wall thicknesses. In this type of system, blood is pumped by a heart through vessels and does not normally fill body cavities.
- Vertebrates and a few invertebrates like annelids have a closed circulatory system
Hence, the correct answer is (D).
- Open circulatory system is a type of circulatory system which is common to Mollusca, Nematoda and Arthropoda.
- Open circulatory systems pump blood into a hemocoel with the blood diffusing back to the circulatory system between cells. Blood is pumped by a heart into the body cavities, where tissues are surrounded by the blood.
- Closed circulation is maintained at all times in vessels of varying sizes and wall thicknesses. In this type of system, blood is pumped by a heart through vessels and does not normally fill body cavities.
- Vertebrates and a few invertebrates like annelids have a closed circulatory system
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