Which of the Following Attributes Is True for Both Arthropod

question 6

Multiple Choice

Which of the following attributes is true for both arthropod exoskeletons and mollusk shells?

• A)They completely replace the hydrostatic skeleton.
• B)They are secreted by the mantle.
• C)They help retain moisture in terrestrial habitats.
• D)They are comprised of the polysaccharide chitin.

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