Answer:
Highlighting features of kingdom?Mammalia are Mammals are
warm-blooded animals which have four-chambered heart. Females have mammary glands
for the production of milk to nourish and for suckling the young ones.
(ii) These are known to be the advanced group of animals with
a very well-developed brain.
(iii) Integumentary glands such as sweat glands and oil glands
are present in their skin.
(iv) Mammalia is the first class to mark the presence of
ear pinna (external fleshy ear).
(v) Different types of teeth are present in these animals, i.e.,
heterodont and thecodont.
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