The gastrovascular cavity of cnidarians has two openings, one serves as mouth and the other serves as anus. True False The body wall of cnidarians has epidermis, gastrodermis and mesoglea. True False Some cnidarians only have a polyp stage. True False

The gastrovascular cavity of cnidarians has two openings, one serves as mouth and the other serves as anus. True False The body wall of cnidarians has epidermis, gastrodermis and mesoglea. True False Some cnidarians only have a polyp stage. True False

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter29: Vertebrates

Section: Chapter Questions

Problem 7RQ: Members of Chondrichthyes differ from members of Osteichthyes by having (a). jaw bony skeleton...

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Concept explainers

Classification of Marine Organisms

Classification is a way of categorizing organisms that enables an easy process of identification of such organisms. All living things are classified by grouping them under specific categories. The grouping is done based on the close relativeness of the organisms. The classification tool requires knowledge of characteristics, differences, and similarities between different organisms.

Question

The gastrovascular cavity of cnidarians has two openings, one serves as mouth and the other serves as anus.

	True
	False

The body wall of cnidarians has epidermis, gastrodermis and mesoglea.

	True
	False

Some cnidarians only have a polyp stage.

	True
	False

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