What are the special characteristics about flatworms?

Answer 1

1)Bilaterally symmetrical.

2)Body having 3 layers of tissues with organs and organelles.

3)Body contains no internal cavity.

4)Possesses a blind gut (i.e. it has a mouth but no anus)

5)Has Protonephridial excretory organs instead of an anus.

6)Has normally a nervous system of longitudinal fibres rather than a net.

7)Generally dorsoventrally flattened.

8)Reproduction mostly sexual as hermaphrodites.

9)Mostly they feed on animals and other smaller life forms.

10)Some species occur in all major habitats, including many as parasites of other animals.

Answer 2

1) They have dorso-ventrally flattened body.

2) They are mostly endoparasites.

3) Flatworms are bilaterally symmetrical, triploblastic and acoelomate animals with

organ level of organisation.

4) Hooks and suckers are present in the parasitic forms.

5) Specialised cells called flame cells help in osmoregulation and excretion.

6) Sexes are not separate.

7) Fertilisation is internal and development is through many larval stages.

Answer 3

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