Differentiate between Platyhelminthes and Aschelminthes.
(b) Annelida and Arthropoda
(c) Mollusca and Echinodermata
Please find below the solution to the asked query
|Include flatworms||Include roundworms|
|Hermaphrodites||Sexes are separate|
|No respiratory organ||Skin acts as respiratory organ|
|Development is either direct or indirect||Development is direct|
|They do not have any distinct head.||Their body is differentiated into head, thorax and abdomen.|
|Exoskeleton is absent.||Body is covered by chitinous exoskeleton.|
|Locomotion is done by setae, parapodia or suckers.||Three pairs of jointed appendages are present for locomotion.|
|Respiration occurs through skin.||Respiration occurs through trachea or book lungs.|
|E.g. Earthworm, Leech||E.g. Cockroach, Spider|
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