Multiple Choice
Which statement best explains why invertebrates often have outer skeletons but vertebrates do not?
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30. Overview of Animals
Overview of Animals
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In the context of mollusks, what is the function of the mantle?
A
It secretes the shell and covers the visceral mass.
B
It is responsible for the digestion of food.
C
It aids in locomotion by contracting and expanding.
D
It functions as the primary respiratory organ.
Verified step by step guidance1
Understand the anatomy of mollusks: Mollusks are a diverse group of animals that include snails, clams, and squids. They typically have a soft body, which is often protected by a hard shell.
Identify the mantle: The mantle is a significant part of a mollusk's anatomy. It is a layer of tissue that covers the visceral mass, which contains most of the internal organs.
Explore the function of the mantle: The primary function of the mantle is to secrete calcium carbonate to form the shell, providing protection to the mollusk. It also covers the visceral mass.
Differentiate other functions: While the mantle is crucial for shell secretion, other functions like digestion, locomotion, and respiration are typically handled by different parts of the mollusk's body. For example, digestion is managed by the digestive system, locomotion by the foot, and respiration by gills or lungs.
Conclude the role of the mantle: Based on the anatomical and functional understanding, the mantle's main role is to secrete the shell and cover the visceral mass, distinguishing it from other functions like digestion, locomotion, and respiration.
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