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a
1
b
2
c
3
d
4
answer is D.
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Detailed Solution
Calciferous glands in the stomach (9th to 14th) of Pheretima neutralise humic acid in food.Spermathecae store sperm.Hearts in 12 and 13 segments are called lateral oesophageal hearts.Gland cells of clitellum produce cocoons.