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Everything except bone.
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∙ 13y ago
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Do sponges have nerves?
No sponges lack organized multicellular organs, such as nerves and muscles.
What do sponges lack that make them more primitive and simpler?
Just finshed it on a test. Sponges lack a digestive track, symmertical plan, and nerce cells.
Are tubular sponges vetebrates or invetebrates?
Invertebrates, due to lack of a spine.
What system do the enidaria and comb jellies have that sponges lack?
tru tissue
Name the only type of animal that lack groups of cells that form tissues?
The sponges.
What system do the cnidaria and comb jellies have that sponges lack?
Despite neither jellies nor sponges having central nervous systems, jellies have true tissues. The cells in jellyfish are also bound together, unlike in sponges.
Are sponges diploblastic?
Yes. they have two germ layers - or a two - layerd body wall. The epidermis and gastrodermis. Actually sponges lack true tissues and are therefore not diploblastic.
Organisms that lack symmetry are termed?
Asymmetrical are organisms, such as sponges, that have no true symmetry.
Are spnges and cnidarians verebrate or invertebrate?
I assume you mean sponges, and they are obviously invertabrates (they lack a back bone).
How do sponges differ from other animals?
Sponges lack a true body cavity.Sponges exhibit radial symmetry.Sponges lack true tissues.Sponges are autotrophs.Sponges have a true coelom.-@leilooni
Why are sponges classified as an animal?
Because no other animal has anything like collar cells..
Would gemmules or larvae be better at distributing a population of sponges through an area?
Gemmules are internal buds found in sponges that are the result of asexual reproduction, and are a response to a hostile environment.They are resistant to desiccation (drying out), freezing, and anoxia (lack of oxygen) and can lie around for long periods of time. They would be good for the distribution of a population of sponges.
