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Question
Partly open type of circulatory system is found in few members of class
Partly open type of circulatory system is found in few members of class
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Solution
The correct option is D Hirudinea
The circulatory system is usually closed in Annelids, i.e., confined within well-developed blood vessels. However, in some Hirudinea, the circulatory system is partly open, with blood and coelomic fluid mixing directly in the sinuses of the body cavity. Therefore, the correct answer is option D.
The circulatory system is usually closed in Annelids, i.e., confined within well-developed blood vessels. However, in some Hirudinea, the circulatory system is partly open, with blood and coelomic fluid mixing directly in the sinuses of the body cavity.
Therefore, the correct answer is option D.
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