. (a) Identify three features possessed by all chordates.
(b) Name the classes of vertebrates which have the following characteristics:
(1) Animals that have streamlined body and gills for breathing.
(2) Animals that are found both on land and in water.
(3) Animals that have mammary glands for the production of milk to nourish their
young ones.
................please answer fast..................
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a- circulatory system present
respiratory system present
digestive system complete
b-1 cyclostomata
2 amphibia
3 mammalia
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