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LenKa [72]
2 years ago
6

Members of the phyla Cnidaria and Bryozoa both have a circle of tentacles, which they use for feeding. Besides the difference in

size, how else do these feeding structures differ?
A.
Cnidarians have a fixed number of tentacles, but the numbers vary in Bryozoans.
B.
Cnidarian tentacles are retractable, but Bryozoan tentacles are nonretractable.
C.
Cnidarian tentacles have stinging cells, but Bryozoan tentacles are covered with cilia.
D.
Cnidarian tentacles are multicellular, but Bryozoan tentacles consist of a single cell.
Biology
1 answer:
Sophie [7]2 years ago
8 0

Answer:

C.  Cnidarian tentacles have stinging cells, but Bryozoan tentacles are covered with cilia.

Explanation:

Cnidaria and Bryozoan, both teh phylum are classified under kingdom Animalia that contain aquatic animals found both in freshwater and marine environments.

They both use tentacles for feeding but there is diffference between there tentacles and feeding process.

Cnidarians tentacles are conist of stinging cells in the tips, which are called cnidocytes and a coiled thread-like stinger, called nematocyst. These stinging cells and nematocyst helps to capture and subdue prey. They feed over plankton or animals larger then them.

Bryozoan tentacles are covered with cilia and form an "O" or "U" shaped fold called lophophore, which helps to feed by sweeping the surrounding water. They generally feed on plankton, nudibranchs (sea slugs) and sea spiders.

Hence, the correct option is C.

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