For starters starfish do not have a brain, however they are able to feel and make decisions using their senses. They are known for their ability to regenerate amputated limbs, and are characterized by flexible arms attached to a central disc. Most of these prickly, scratchy ocean friends have 5 legs. They have a surprisingly unusual anatomy, with no brain or blood, yet are able to digest food outside their body. In terms of appearance most starfish have five … Mammals like bears and bunnies have 4 legs. We humans have 2 legs, and so do all birds. 9 years ago. Although starfish are invertebrates, they do have a kind of skeleton..
In terms of appearance most starfish have five arms that extend from a circular middle. There are other candidates for species that naturally have an odd number of legs, but none are very convincing. It pumps water into its body and into the feet tubes.
Ayesha Sadiq. Five is the most common number (called pentaradial symmetry), but some species have eight or even more.
star fish or sea star belongs to a phylum echinodermata it possess five arms or rays which radiate from the central disk and if it is damaged or lost a single ray can regenerate the whole sea star . On the undersides of a starfish's arms are numerous little tube-shaped feet, also known as podia. RE: Does a starfish have five arms or five legs?
Instead of blood, a starfish uses sea water as its vascular system. They have tube feet that have evolved to work best on the type of bottom where they live. Relevance. Even with all those legs… Therefore, scientists prefer to call them sea stars. Spiders and octopus have 8. Starfish are not fish, but rather marine invertebrates or "echinoderms" in the class Asteroidea. More specifically, the team found that all of the starfish were able to keep their central disk 3 C to 5 C cooler than their arms, suggesting that the animals were using their legs as heat sinks. Login to reply the answers Post; Jim Justice. A starfish can interpret its environment, look for food and respond to pain or danger by trying to move away or avoiding it. This Site Might Help You. The bodies of starfish are composed of calcium carbonate plates, known as 'ossicles'.. But there are over 1,800 types of starfish, or “species,” and they don’t have to have just 5 legs — they can have up to 50! The starfish does have a remarkable ability to regenerate lost arms, sometimes growing two where there was one, meaning that sixarmed creatures are not unheard of. Thanks for the A2A! Do starfish have legs or arms or tentacles or are their extensions called something else?
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