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Members of the Molluscan class Polyplacophora differ from ALL other classes of Mollusks in that they: (mark all that apply) O eight valves two pair of antennae no luck with women two valves no radula an open circulatory system segmentation

Members of the Molluscan class Polyplacophora differ from ALL other classes of Mollusks in that they: (mark all that apply) O eight valves two pair of antennae no luck with women two valves no radula an open circulatory system segmentation

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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### Educational Content: Polyplacophora (Chitons) **Question:** Members of the Molluscan class Polyplacophora differ from all other classes of Mollusks in that they: (mark all that apply) **Options:** - [ ] eight valves - [ ] two pair of antennae - [ ] no luck with women - [ ] two valves - [ ] no radula - [ ] an open circulatory system - [ ] segmentation **Explanation:** The Polyplacophora, commonly known as chitons, are a class of mollusks characterized by their unique structure. Unlike other mollusks, chitons have eight distinct, articulated plates (valves) along their dorsal side, which is a key distinguishing feature. Understanding these options helps highlight the unique anatomical features of chitons in contrast with other molluscan classes.
Transcribed Image Text:### Educational Content: Polyplacophora (Chitons) **Question:** Members of the Molluscan class Polyplacophora differ from all other classes of Mollusks in that they: (mark all that apply) **Options:** - [ ] eight valves - [ ] two pair of antennae - [ ] no luck with women - [ ] two valves - [ ] no radula - [ ] an open circulatory system - [ ] segmentation **Explanation:** The Polyplacophora, commonly known as chitons, are a class of mollusks characterized by their unique structure. Unlike other mollusks, chitons have eight distinct, articulated plates (valves) along their dorsal side, which is a key distinguishing feature. Understanding these options helps highlight the unique anatomical features of chitons in contrast with other molluscan classes.
In mollusks, "coiling" refers to: - ○ posterior-trending of the nerve chord - ○ an anterior-trending twisting of the digestive tract - ○ the retraction of the radula into the pharynx - ○ winding of the shell and visceral mass - ○ the ability to withdraw the head underneath the shell - ○ the lack of a coel These options describe different anatomical features and processes in mollusks, with a specific focus on the concept of coiling, which is typically associated with the winding of the shell and visceral mass.
Transcribed Image Text:In mollusks, "coiling" refers to: - ○ posterior-trending of the nerve chord - ○ an anterior-trending twisting of the digestive tract - ○ the retraction of the radula into the pharynx - ○ winding of the shell and visceral mass - ○ the ability to withdraw the head underneath the shell - ○ the lack of a coel These options describe different anatomical features and processes in mollusks, with a specific focus on the concept of coiling, which is typically associated with the winding of the shell and visceral mass.
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