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Of sponges cnidarians flatworms and roundworms which are most complex?
Wiki User
∙ 13y ago
No clue, but here is a hint, look in the book!
Wiki User
∙ 13y ago
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What are the main characteristics of sponges cnidarians and worms?
Sponges are invertebrate animals that usually have no body symmetry and never have tissues or organs. Cnidarians use stinging cells to capture food and defend themselves. Flatworms are flat and as soft as jelly. Unlike cnidarians or flatworms, roundworms have a digestive system that is like a tube, open at both ends. Earthworms and other segmented worms have bodies made up of many linked sections called segments.
Are coral jellyfish or sponges cnidarians?
Corals and Jellyfish are cnidarians, sponges are not.
What are the phyla's?
In no particular order: Chordates Echinodermata Platyhelminthes (Flatworms) Nematodes (Roundworms) Annelids (Segmented Worms) Arthropods Porifera (Sponges) Molluscs (Shells)
Are cnidarians arthropods?
Cnidarians and Sponges are invertebrates
Do sponges or cnidarians have a gastovascular cavity?
No, they are from the Phylum Porifera.
What do flatworms have that sponges and cnidarians dont?
Flatowrms have muscle cells, they are a triploblastic phylum. They have endo, meso and ectoderm layersSponges are Parazoa and lack any true tissue at allCnidaria are diploblastic, having only endoderm and ectoderm
Are sponges cnidarians?
No. Sponges have their own phylum called Porifera.
What is the order of animal kingdom phyla simple to complex?
The order of animal kingdom phyla from simple to complex is generally considered to be Porifera (sponges), Cnidaria (jellyfish, corals), Platyhelminthes (flatworms), Nematoda (roundworms), Annelida (segmented worms), Mollusca (clams, snails), Arthropoda (insects, crustaceans), Echinodermata (starfish, sea urchins), and Chordata (vertebrates).
Are the three phyla of worms more closely related to complex animals or to sponges and cnidarians?
Ban'n chen, al fe research.
Do sponges have stinging cells?
No, most cnidarians have stinging cells, not sponges.
Which invertebrate animals have bodies shaped like a sack with openings at the top - sponges or cnidarians?
Cnidarians.
How are cnidarians more advanced then jellyfish?
Sponges are less complex because they are just made of individual cells. There is no level of organization past cells in sponges. Cnidarians, on the other hand, have tissues, a higher level of organization. Tissues allow for some forms, like box jelly fish, to have eyes (this is just one of many advantages of tissues). Cnidarians' level of organization stops there though, they have no organs (heart, brain, etc.).
