Question

Describe the features of phylum Platyhelminthes.

  • Diversity in living organisms CBSE Class 9
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Answer

(i) They show bilateral body symmetry.

(ii) Their body is dorsoventrally flattened like a ribbon. So they are also called flatworms.

(iii) Most of them are parasitic, only a few are free living.

(iv) They are mostly hermaphrodites.

(v) There are three embryonic layers of cells in their body. So, they are triploblastic.

(vi) The body does not have any pore or cavity.

(vii) They have power of regeneration.

Examples: Fasciola (Liver fluke), and Taenia solium.

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