OESOPHAGUS STOMACH
ECHINODERMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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oral
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aboral
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Either A or B
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None of the above
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Detailed explanation-1: -The mouth in starfish is present on the oral (lower, ventral) surface and anus is on aboral (upper, dorsal) surface respectively.
Detailed explanation-2: -Their mouth is on the bottom side called the oral surface. The top side is called the aboral surface. Starfish walk using their tube feet to move themselves along a surface. Their tube feet have suckers on the ends, which they use to attach themselves to rocks and to trap prey items.
Detailed explanation-3: -A sea star’s mouth, which is on the underside of its body, has no teeth. When feeding, sea stars wrap their arms around their prey and then push their stomachs out of their mouths to consume their food. If captured by a predator, sea stars have the ability to drop an arm to try to escape.