Question

___________ is the unique characteristic feature of mammal​

Answer 1

Answer:

sweet glands,presence of hair,fur,4 chamber heart

Answer 2

Presence of mammary gland is the unique characteristic feature of mammal.

Explanation:

1. Mammals falls under the kingdom named 'Animalia'. They possess mammary glands which is their unique characteristic.

2. Mammary glands are the glands that produce milk for the nourishment of their young ones. Only the females of the mammals possesses this gland.

3. Some other characteristics that can be found in mammals are:

• Mammals have teeth which is of different types. This is known as heterodont.

• Also, mammals exhibit a very advance form of diaphragm.

• Mammals also possesses cranial nerves which are twelve pairs in number.

• They have a well developed pumping organ called heart which consists of four chambers.

• Their skin has two glands. These are: sebaceous gland which secretes oil and the other one is sudoriferous glands which produces or secretes sweat.

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