Hearts of Pheretima are situated in which of the following segments?

10, 13, 16 and 17

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7, 9, 12 and 13

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4, 5, 10 and 13

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11, 14, 17 and 18

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Solution

The correct option is B 7, 9, 12 and 13
Earthworm belongs to phylum Annelida which is triploblastic and has a true coelom. These have segmented body. The hearts in the 12th and 13th segments of earthworm are called as lateral oesophageal hearts, while the anterior pairs in the 7th and 9th segments are called as the lateral hearts. So, the correct answer is option B.

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