Answer:
(a) Schematic
representation of transport and exchange of oxygen and, carbon dioxide is
shown below (2)
(b) The separation of right and left sides of the heart is very important
in birds and mammals. Such kind of separation is useful to keep oxygenated and deoxygenated
blood from mixing and thus allow a highly efficient supply of oxygen to the
body.
This also helps in providing constant energy to the organism.
This is required by mammals and birds as they utilise this energy to maintain
their body temperature. (3)
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