All have closed circulatory system except?
Everyday Science / Zoology — Multiple-choice practice
- A. Earthworm
- B. Octopus
- C. Spiider
- D. Annelids
Correct answer
Annelids
Explanation
Explanation Annelids do have a closed circulatory system, along with other invertebrates and vertebrates Annelids, like earthworms, have a closed circulatory system. In annelids, blood is pumped along by muscles in blood vessels. The blood picks up food molecules from the digestive tract and oxygen from the skin. It then transports these to the cells of the body.
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