Question

Character of mamalia and examples

Answer 1

Answer:

Explanation:

Mamalia give birth to young ones they mostly have a 4 chambered heart as their oxygen requirements is very large e.g. Humans,cats, platypusses

Answer 2

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$\green\bigstar$Mamalia :-

• This are develop during coenzoic era (approximately 70 - 65 mammals).

• All the mammals posses hair on their skin except aquatic mammals.

• They give direct birth to their young one except platypus.

• Show very high level of parental care and feed their young one through the secretion of mammary gland.

• They posses well cranial nerve brain very well developed and control the function of the body through CNS and spinal cord.

• In a mammals vertebrae is connected to one another by fibroblast cartilage.

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$\orange\bigstar$Examples :-

• Elephant ( elephas ) :- They have pair of tusk beneath there mouth. They posses single trunk which is also play the role of nose and sensory organ.

• Humans ( homosapiens ) :- Most developed animal form a family and show high level of parental care.

• Bat ( Medious ) :- A flying mammal and produces a very developed echo which create waves and helpful for their direction.

• Rabbit ( cunniculus ) :- This are mainly in leaves inside the land and known as fossorial.

• Lion ( Panthera leo ) :- Present only in africa and india.

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