Which one of the following statements about certain given animals is correct?

Round worms (Aschelminthes) are pseudo coelomates

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Molluscs are acoelomates

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Insects are pseudocoelomates

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Flatworms (Platyhelminthes) are coelomates

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Solution

The correct option is A Round worms (Aschelminthes) are pseudo coelomates
Acoelomates are animals without a body cavity or no coelom. Examples of poriferans, coelenterates, Ctenophora, Platyhelminthes, and nemathelminths. In pseudocoelomates, body space is pseudo coelom or false coelom. Examples are Ectoprocta, Aschelminthes. In coelomates, body space is a true coelom enclosed by mesoderm on both sides. Remaining phyla are bilateral, from Annelida to arthropods are coelomates. Molluscs and insects are coelomates while flatworms are acoelomates.

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Similar questions

The below statements are regarding phylum aschelminthes :

1). They are bilaterally symmetrical and triploblastic

2). Dioecious

3). All are parasitic.

4). Pseudocoelomate

Select the correct answer having a pair of correct characters

(i)	Diploblastic :	Poriferans, Coelenterates
(ii)	Triploblastic :	Platyhelminthes to Chordates
(iii)	Acoelomata :	Poriferans, Coelenterates, Platyhelminthes
(iv)	Pseudocoelomata :	Aschelminthes/Roundworms
(v)	Eucoelomata :	Annelids to Chordates

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