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Defensive strategies employed include the presence of spines, toxins, which can be inherent or delivered through the tube feet, and the discharge of sticky entangling threads by sea cucumbers. Being stabbed by a sea urchin may result in painful injury.

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13y ago
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14y ago

mollusks use their hard shell to defend from predators

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7y ago

A head, a visceral mass, and a "foot."

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Q: What structures of defense do mollusks have?
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