Which Of The Following Are Distinguishing Features Of Mammals From Other Animals?
Animals belonging to form Mammalia are referred to as mammals. Mammals are i of the most evolved species in the animal kingdom categorized under vertebrata.
They exhibit advanced characteristics which set them apart from all other animals. They are characterized by the presence of mammary glands through which they feed their younger ones.
They are distributed worldwide and have adjusted well to their surroundings – from oceans, deserts and polar regions to rainforests and rivers etc.
Let united states have a detailed look at the characteristics and classifications of the animals belonging to the form Mammalia.
Characteristics Of Mammals
Post-obit are a list of singled-out characteristics of mammals that separates them from other classes:
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Mammals are warm-blooded animals who give birth to their younger ones.
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They are the almost dominant form of animals constitute in almost all types of habitats.
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They accept mammary glands that help them produce milk to feed their younger ones
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Presence of region of the encephalon known equally Neocortex
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Their pare possesses oil glands (sebaceous glands) and sweat glands (sudoriferous glands).
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The fur of hair throughout the body which helps animals adapt to their environment.
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They are heterodont, i.east., possess unlike types of teeth.
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Mammals likewise possess cervical vertebrae.
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The skull is dicondylic.
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The trunk is divided into thorax and abdomen.
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The mammals respire through lungs.
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Good sense of hearing as mammals are aided with 3 centre ear bones
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Mammals have a four-chambered centre. The sinus venous and renal portal arrangement are absent.
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Presence of single-boned lower jaws.
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The brain is well developed divided into cerebrum, cerebellum and medulla.
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They possess 12 pairs of cranial nerves.
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Exhibit one of the most advanced forms of Diaphragms.
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The mammals can lay eggs likewise. They are known every bit viviparous.
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Classification Of Mammals
Mammalia has the largest class in the animal kingdom. Based on their reproduction, they are classified into three subclasses:
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Eutheria
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Metatheria
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Prototheria
Eutheria
Mammals nether this subclass requite birth to young ones. The young ones are developed inside the mother and derive nutrition through the placenta from the mother. Furthermore, information technology consists of 19 orders, few of which are:
| Gild | Examples |
| Proboscidea | Elephants |
| Rodentia | Rats |
| Artiodactyla | Cows |
Metatheria
Mammals belonging to this sub-class give birth to immature young ones, hence they stay in their mother's pouch until they mature. For eg., Marsupials and Kangaroos. They are divided into seven unlike orders:
| Order | Examples |
| Notoryctemorphia | Marsupial modes |
| Diprotodontia | Kangaroo |
| Microbiotheria | Colocolo |
| Didelphimorphia | New world opossum |
| Dasyuromorphia | Dasyurids |
| Peramelemorphia | Bandicoots |
| Paucituberculata | South American rat opossum |
Prototheria
Likewise known equally Monotremes, the sub-class Prototheria consists of egg-laying mammals. Information technology has one club having six species
Social club: Monotremata
Example: Duckbilled platypus, Echidna
Full general Nomenclature of Mammals
The scientists have too classified the mammals on a general basis which makes it piece of cake to learn about the mammals and their distinguishing characteristics.
| Nomenclature | Examples |
| Animals | Lion, Tiger, Dog |
| Marsupials | Kangaroo, Koala, Womba |
| Primates | Chimpanzee, Gorilla, Monkey |
| Rodents | Squirrel. Mouse, Porcupine |
| Cetaceans | Dolphins, Whales |
| Other mammals | Seal, Walrus, Sea-lion |
For more information on Mammalia, its characteristics and classification, go on visiting BYJU'S website or download BYJU'S app for further reference.
Further Reading:
Frequently Asked Questions
What are the major characteristics of mammalia?
These are warm-blooded, hairy living organisms with mammary glands to feed their young ones.
Why is dolphin a mammal?
Dolphin is a mammal because it breathes through lungs and has mammary glands. Moreover, it does non lay eggs and gives birth to its young ones.
How are the mammals classified?
Mammals are classified as eutheria, prototheria, metatheria.
Give examples of prototherians.
Prototherians include platypus and echidna.
Source: https://byjus.com/biology/mammalia-diversity-in-living-organisms/
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