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How does the number of spines in the central disk of a starfish compare with the number on a ray?
Wiki User
∙ 12y ago
that's exact;y what my science hw asks...but i cant find it anywhere. sorry
Wiki User
∙ 12y ago
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What is starfish skin like?
On the surface of a starfish you will find spines used for protection as armor, dermal gills surrounded the spines, a central disk, madreporite, arms and an anus. Underneath tubed feet used for movement, mouth, ambulacral grooves, and its mouth.
Do starfish have soft bodies?
starfish have bumps and spines on their body
What is the skin-gill on a starfish?
used for breathing. they stickout through bony spines on the starfish.
What system does the spines in a starfish belong to?
Skeletal system
Do starefish have a backbone?
No -- starfish or seastars are echinoderms and as such are invertebrates. -- no spines.
What is the function of the spines in a sea star?
The spines on the oral surface are softer and bend to cover the mouth of the starfish as well as the ambulacral grooves. They are basically for protection.
Do fish have spines?
Yes, they have spines. Fish are VertebratesFish are vertebrates which means that they have spines. Some types of animal which have "fish" as part of their name such as starfish and jellyfish do not, however, have spines.yes
Do starfish have skin?
Starfish do not have fur. They actually have soft spines that cover their whole bodies. These are used for protection.
How does a starfish protects itself?
As an adaptation, starfish have saponins in their body walls, which are very unpleasant tasting to predators. Tropical species of starfish also have armor and spines as their protection. And thirdly, starfish have the ability shed and regenerate their limbs.
Identification features of starfish are what?
A starfish has many identifying features. It is a small disc with five arms. The body is very flexible with groups of papulae. It has spines on the upper surface in one or more longitudinal rows. In oblique rows are the ventro-lateral spines just outside the adambulacrais.
Does an starfish have bones?
A starfish is an invertebrate, which means it has no spine, however it does have spines, which are white and calcareous that extend from the endoskeleton beneath. The spines are movable, used for protection and are sensitive to touch.
If you find a starfish in the wild how do you hold it?
There is really no proper way to hold it since they can't hurt you. UNLESS they have very long spines- they could stick you and most likely be poisonous. But if they have very tiny spines you can just pick them up. (Although you should probably pick it up by its' ray (arm). Happy Starfish Hunting!
