OESOPHAGUS STOMACH
ECHINODERMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -With no brain or blood it seems crazy to think starfish can survive in the depth of the vast ocean. However, they find very clever and simple ways to get around it.
Detailed explanation-2: -They have no brain or blood Starfish don’t actually have a brain, or even blood! In fact, they use filtered sea water to pump nutrients through their nervous system instead.
Detailed explanation-3: -Sea stars, commonly called, “starfish, ” are not fish. Sea stars live underwater, but that is where their resemblance to fish ends. They do not have gills, scales, or fins. Sea stars live only in saltwater. Sea water, instead of blood, is actually used to pump nutrients through their bodies via a ‘water vascular system.
Detailed explanation-4: -A typical starfish has five-sided symmetry. With no clear head, the starfish can move in any direction, led by any one of its five arms.
Detailed explanation-5: -02Starfish does have a brain. 03They also don’t have blood and a heart. 04Instead of blood, they have a water vascular system. That system pumps seawater through the tube feet and throughout the starfish’s body.