Which element provides strength to the exoskeletons
Subject : Biology
Question: Which element provides strength to the exoskeletons of clams and oysters?
A. Sulfur
B. Oxygen
C. Hydrogen
D. Phosphorus
Expert Verified Solution:
The correct answer is:
D. Phosphorus
Explanation:
Phosphorus is an element that contributes to the strength of exoskeletons in clams, oysters, and other shell-forming organisms. In these organisms, calcium carbonate (CaCO₃) is the primary component of their shells, but they also have a matrix of proteins and other organic molecules, including phosphorus compounds, which help to provide strength and rigidity.
Sulfur, Oxygen, and Hydrogen are not directly responsible for providing strength to the exoskeletons. While these elements are present in various organic molecules within the organisms, they do not play a key role in the structural integrity of the shells.
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