Classify scorpion and sea anemone on the basis of body cavity i.e. acoelomate, coelomate and pseudocoelomate.

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Solution

Scorpion: coelomate
Sea anemone: acoelomate

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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.

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.

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

Q. Classify sea anemone based on the absence/presence of true coelom.

Q. Read the following statements
(i) True coelom is a body cavity which arises as a cavity in the embryonic mesoderm.
(ii) Digestive cavity is found in acoelomates, pseudocoelomates as well as coelomates.
(iii) The body cavity of arthropods and non-cephalopod molluscs is called haemocoel.
(iv) Aschelminthes possess true body cavity.
(v) There is no cavity between the body wall and gut in Echinoderms.
Which of the statements are correct?

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Classify scorpion and sea anemone on the basis of body cavity i.e. acoelomate, coelomate and pseudocoelomate.

Scorpion: coelomate Sea anemone: acoelomate

Scorpion: coelomate
Sea anemone: acoelomate