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Question

How many heart does an earthworm possess?

A
6 pairs
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B
5 pairs
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C
2 pairs
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D
1 pair
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Solution

The correct option is B 5 pairs
  • Earthworm does not have a true heart as it is an invertebrate, but they have five pairs of aortic arches that are referred to as the heart.
  • These arches are present in the anterior region of the body and they connect ventral and dorsal vessels and pump blood throughout the body.

Thus, the correct option is B.

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