A Malpighian tubule is

a. a rasping tongue with chitinous teeth.
b. a muscular sac used for extending tube feet in echinoderms.
c. a filamentous projection of the mantle.
d. a specialized tube in some arthropods used for waste processing.
e. an abdominal appendage in some arthropods that secretes silk.


D

Biology & Microbiology

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