The Evolution of the Mollusks

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Issue:

Science

 

Written by:

Lamont S

 

Date added:

July 30, 2014

 

Level:

University

 

Grade:

A

 

No of pages / words:

2 / 443

 

Was viewed:

7537 times

 

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Essay content:

Bivalves such as clams have two distinct halves that open and close by muscles. Although they look entirely different they have many of the same physical characteristics. Clams also have a foot present although it is not as broad as that of a snail. Clams have a shell that contains a thin lining inside, which is also known as the mantle...
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Clams have a shell that contains a thin lining inside, which is also known as the mantle. The two species have quite a few things in common based on the hypothetical ancestral mollusk. The difference comes in largely in the movement of the species and the mouth structure or feeding habits. While a snail has a clear mouth formation complete with a radula, a clam has siphons that obtain food from the water...
displayed 300 characters

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