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Discharged nematoblasts are replaced by ...

Discharged nematoblasts are replaced by new ones formed from
(a) Nematoblast
(b) Interstitial cells
(c) Amoebocytes
(d) Archaeocytes.

A

Nematoblast

B

Interstitial cells

C

Amoebocytes

D

Archaeocytes.

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