OESOPHAGUS STOMACH
ECHINODERMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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This class is known for having an Aristotle’s lantern
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Class Holothuroidea, sea cucumbers
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Class Asteroidea, Starfish
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Class Echinodea, sea urchins
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Class Crinoidea, sea lilies and feather stars
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Explanation:
Detailed explanation-1: -The mouth of most sea urchins (class Echinoidea) is made up of five calcium carbonate teeth or jaws, with a fleshy, tongue-like structure within. The entire chewing organ is known as ‘Aristotle’s lantern’. Hence, option C is correct.
Detailed explanation-2: -Most extant sea urchins (Echinodermata: Echinoidea) possess a complex masticatory apparatus, the so-called Aristotle’s lantern.
Detailed explanation-3: -Class Echinoidea. Sea urchins belong to the class Echinoidea, named for the movable spines projecting from their body like a hedgehog’s spines (from the Greek word echinoid meaning like a hedgehog). Sea urchins (Fig.
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