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In Mollusca, which structure is responsible for secreting and lining the shell of the animal? 

Organisms in this class are made of spongin, sometimes with silicon dioxide spicules and have the leuconoid body plant. 

Class Crustacea has a representative that removes the tongue of the fish and replaces it with itself AKA the tongue eating louse.  This animals belong to order ______

Animals that belong to the Class Agnatha that produce large amount of slime as a defense mechanism are________

Limulus Amoebocyte Lysate (LAL) is used to identify bacterial contamination in vaccines and injectable drugs.  This compound is extracted from ______

This Mollusk belongs to class

A mollusk with eight overlapping calcareous plates and a feeding structure called a radula belongs to which group?

Match the order with the correct representative 

Cephalization is most commonly associated with bilateral symmetry.  Cephalization means that 

The meristematic zone that is closest to the root tip is called