Concept explainers
To determine:
The reason squids and clams are classified as mollusks despite of externally structural differences.
Introduction :
The Mollusca is a phylum of animal kingdom. They are mostly marine, which makes up the second most diverse phylum of the animals. They have soft body and their dorsal epidermis is modified to form a mantle.
Explanation of Solution
The squids and the clams look different from external morphology, body structure internally is more or less same. Both these groups have coelomate body along with a well-developed
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Biology Illinois Edition (Glencoe Science)
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