OESOPHAGUS STOMACH
ECHINODERMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Radial Nerve
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Pyloric Stomach
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Nerve Ring
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Eyespots
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Detailed explanation-1: -So, the correct answer is ‘Ascaris’.
Detailed explanation-2: -The echinoderm nervous system primarily consists of a circumoral nerve ring connected to five radial nerve cords that run between the longitudinal and circular muscles of the body.
Detailed explanation-3: -Echinoderms have a simple digestive system with a mouth, stomachs, intestineand anus. In many, the mouth is on the underside and the anus on the top surface of the animal. Sea stars can push their stomachs outside of their body and insert it into its prey allowint them to digest the food externally.
Detailed explanation-4: -echinoderm pyloric cecum. The pyloric ceca (or digestive glands) and the cardiac stomach produce digestive enzymes in starfishes. Digested material is absorbed through the pyloric ceca for transport to the rest of the body. Each pyloric cecum extends the length of each arm.