Coelenterates are AA- CoelomateB- AcoelomateC- PseudocoelomateD- None of these

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Standard IX

Biology

Coelenterata

Coelenterates...

Question

Coelenterates are A)

Acoelomate

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Coelomate

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Pseudocoelomate

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None of these

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Solution

The correct option is A
Acoelomate

coelenterates,a phylum that comprises the sea anemones, jellyfish, and corals, and which is known from the late Precambrian. Cnidarians are basically radially symmetrical and have tentacles. The body contains a gastrovascular cavity and the body wall is diploblastic. Coelenterata has no separate body cavity or coelom, so it is called Acoelomate

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Similar questions

Q. Classify the following organisms based on the absence/presence of true coelom (i.e, acoelomate, pseudocoelomate and coelomate)

Spongilla, Sea anemone, Planaria, Liverfluke Wuchereria, Ascaris, Nereis, Earthworm, Scorpion, Birds, Fishes, Horse.

Body cavity is the cavity present between body wall and gut wall. In some animals the body cavity is not lined by mesoderm. Such animals are called.

(a) Acoelomate

(b) Pseudocoelomate

(d) Haemocoelomate

Question 40
Classify the following organisms based on the absence/presence of true coelom (i.e., acoelomate, pseudocoelomate and coelomate)
Spongilla, Sea anemone, Planaria, Liver fluke, Wuchereria, Ascaris, Nereis, Earthworm, Scorpion, Birds, Fishes, Horse.

Q. Short answer type questions
What is a pseudocoelom ? What are the advantages of having a coelom ? Name the invertebrate phylum that has a pseudocoelom?

The animals (Kingdom Animalia) are mainly grouped under two categories

(a) bilaterally symmetrical and radially symmetrical

(b) coelomate and acoelomate

(d) vertebrates and invertebrates

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