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SSC CHSL 2020 PYQ — Question 29

SSC CHSL - 19th October 2020 - Shift 3 • General Awareness • Q29

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Which of the following types of organisms have an open circulatory system?

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Correct answer: A

Explanation

The correct answer is option 1 i.e Mollusca.

  • In open circulatory system, the blood is pumped into a hemocoel and the blood diffuses back to the system between the cells. 
  • Blood is pumped by a heart into the body cavities, where tissues are surrounded by the blood. The resulting blood flow is sluggish.
  • The open circulatory system is common to molluscs and arthropods.