Answer:
(i)
They show bilateral body symmetry.
(ii) Their body is dorsoventrally flattened like a ribbon. So they are
also called flatworms.
(ii) 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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