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Sea urchins do not have an exoskeleton; instead, they possess an endoskeleton made of calcareous plates that form a hard shell, known as a test. This test is covered in spines, which are part of the urchin's body and provide protection and mobility. The structure allows them to maintain their shape and offers defense against predators.
What else can I help you with?
Do purple sea urchins have an exoskeleton?
They do, which keeps the sea urchin strong and not brittle.
Is a sea urchin a arthropod?
No. Sea urchins are echinoderms, meaning, appropriately enough, "spiny skin". Some of the characteristics of arthropods are jointed appendages, an exoskeleton, and a segmented body. While the hard test, or shell, of sea urchins could be thought of as an exoskeleton, sea urchins have no jointed appendages and do not have a segmented body. Some examples of arthropods are shrimps, crabs, lobsters, and insects.
Compare and contrast the support systems of cicadas and sea urchins?
Well, honey, cicadas and sea urchins both have support systems, but they're as different as night and day. Cicadas rely on their exoskeleton for structure and protection, while sea urchins have an endoskeleton made of calcium carbonate plates. So, in a nutshell, cicadas wear their support on the outside, while sea urchins keep it all on the inside.
Do sea urchins live in Connecticut?
No. Sea urchins live in the sea.
What does the process of fertilization in sea urchins produce?
More sea urchins.
What category do sea urchins fit into?
The classification of a Sea Urchin is Echinoidea
How many purple sea urchins are there?
there are excatly 3million purple sea urchins
How are sea urchins and kelp forests connected?
sea urchins eat kelp.
What phylum do sea urchins belong?
Echinoderms.
Are sea urchins predators?
No. Sea urchins are primary consumers and only eat sea weed, algae and kelp.
Where can sea urchins be found?
in the sea
Is sea urchins herbivorous?
Yes, sea urchins are herbivores because they mainly feed on algae.
