● `color{Brown}"Body shape"`: They are star like, cylindrical, melon like or disc like.
● `color{Brown}"Skin"`: Skin of echinoderms contains `color{Violet}"calcareous spines"`, `color{Violet}"pedicellariae"` (minute pincer like structure that clears the body of debris) and endoskeleton consists of `color{Violet}"calcareous plate"` (Ossicle).
● `color{Brown}"Digestive system"`: It is `color{Violet}"complete"` with mouth on the lower (ventral) side and anus on the upper (dorsal) side.
● `color{Brown}"Water vascular system"`:
`star` The most distinctive feature of echinoderms is the water filled `color{Violet}"ambulacral or water vascular system"` with tube feet to help in locomotion, capture and transport of food and respiration.
`star` Structures like `color{Violet}"Madreporite"`, `color{Violet}"tube feet"`, `color{Violet}"radial canals"`, `color{Violet}"tiedmann body"` and `color{Violet}"stone cana"`l are also found in water vascular system.
● `color{Brown}"Respiration"`: It takes place by body surface or `color{Violet}"gills called dermal branchiae"`.
● `color{Brown}"Circulation system"`: It is reduced and `color{Violet}"open"` type
● `color{Brown}"Excretory system"`: `color{Violet}"Absent"`; nitrogenous waste ammonia `color{Violet}"diffuses"` out through body surface.
● `color{Brown}"Nervous system"`: `color{Violet}"Simple"` and less developed. They don't have head and brain
● `color{Brown}"Body shape"`: They are star like, cylindrical, melon like or disc like.
● `color{Brown}"Skin"`: Skin of echinoderms contains `color{Violet}"calcareous spines"`, `color{Violet}"pedicellariae"` (minute pincer like structure that clears the body of debris) and endoskeleton consists of `color{Violet}"calcareous plate"` (Ossicle).
● `color{Brown}"Digestive system"`: It is `color{Violet}"complete"` with mouth on the lower (ventral) side and anus on the upper (dorsal) side.
● `color{Brown}"Water vascular system"`:
`star` The most distinctive feature of echinoderms is the water filled `color{Violet}"ambulacral or water vascular system"` with tube feet to help in locomotion, capture and transport of food and respiration.
`star` Structures like `color{Violet}"Madreporite"`, `color{Violet}"tube feet"`, `color{Violet}"radial canals"`, `color{Violet}"tiedmann body"` and `color{Violet}"stone cana"`l are also found in water vascular system.
● `color{Brown}"Respiration"`: It takes place by body surface or `color{Violet}"gills called dermal branchiae"`.
● `color{Brown}"Circulation system"`: It is reduced and `color{Violet}"open"` type
● `color{Brown}"Excretory system"`: `color{Violet}"Absent"`; nitrogenous waste ammonia `color{Violet}"diffuses"` out through body surface.
● `color{Brown}"Nervous system"`: `color{Violet}"Simple"` and less developed. They don't have head and brain