OESOPHAGUS STOMACH
ECHINODERMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is the name of the major canal that runs through each arm of a sea star?
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Radial canal
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Podia
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Stone canal
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Lateral canal
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Explanation:
Detailed explanation-1: -The central ring canal, in addition to connecting the radial canals to each other and to the stone canal, also has a number of other specialised structures on the inner surface. In between each radial canal, in many sea star species, there lies a muscular sac called a polian vesicle.
Detailed explanation-2: -The individual components of the water vascular system are the following: Madreporite. Stone canal. Circular ring canal.
Detailed explanation-3: -The radial canals carry water to the ampullae and provide suction to the tube feet. The tube feet latch on to surfaces and move in a wave, with one body section attaching to the surfaces as another releases. Most sea stars cannot move quickly.
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