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They are filter feeders that draw water into their pores, filter out tiny sea invertebrates that are absorbed and digested, and expel the remaining water in a continuous basis.
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∙ 13y ago
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What characteristic is shared by cnidarians and flatworms?
a digestive system with a single opening
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 scorpions annelids flatworms mollusks arthropods cnidarians or echinoderm?
a scorpion is a Arthropods
What evolved first cnidarians or echinoderms?
I believe Echinoderms evolved first.
What does not belong to the phylum cnidaria jellyfish flatworm sea anemones corals?
Flatworms don't belong to cnidarians .They belong to Platyhelminthis . All others are cnidarians .
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.
Of sponges cnidarians flatworms and roundworms which are most complex?
No clue, but here is a hint, look in the book!
Can flatworms make their own food?
flatworms cannot make their own food.
Do flatworms digest food?
Yes they do digest food.
How does method by which cnidarians obtain food differ from method by which poriferans obtain food?
Poriferans needs organic substances and cnidarians needs of a gastrovascular cavity with openings.
How do cnidarians digest their food?
Extracellularly in a digestive cavity.
What does cnidarians use to get food to their mouth?
their tentacles
