While speaking of the animal kingdom, many types of animals big, small or heaviest animals of animal kingdom come in our mind. Both of these classes belong to the kingdom Animalia and are loaded with some of the most stunning creatures on the blue planet. So, get ready for an exciting journey for we are going to share Basic Difference and Similarities between Mammals and Reptiles right here!
Go ahead, give it a read! Read through to get astonished! The Difference in Epidermis Reptiles and Mammals can be easily differentiated by their epidermis which is the outer layer covering an organism. The epidermis of reptiles is covered with scales, while of that of mammals is covered with hair. Different Hearts Most of the reptiles are found to have a 3-chambered heart.
On the other hand, all mammals have a 4-chambered heart. The Varying Metabolisms Mammals are homeotherms and have a high metabolic rate. Speaking of reptiles, their metabolic rate is low. Different Growth Rates All mammals including humans stop growing after adulthood. However, this is not the same for reptiles which keep on growing throughout their life. Disparate Diaphragms All mammals on Earth are born with a diaphragm through which the process of respiration takes place.
Hair is a defining characteristic of all mammals. Reptiles do not have hair, but they do have scales, which--unlike fish scales--arise in the upper layer of skin, the epidermis, rather than in the dermis layer underneath.
Both hair and scales are made of a substance known as keratin. Mammals also have sweat glands; reptiles do not. Since beginning her career as a professional journalist in , Nathalie Alonso has covered a myriad of topics, including arts, culture and travel, for newspapers and magazines in New York City.
She holds a B. TL;DR Too Long; Didn't Read Mammals and reptiles have some similarities -- for example, they both have spinal cords -- but have more differences, especially with respect to skin and temperature regulation. Five Classes of Chordates. Earthworm Phylum Characteristics.
Reptiles that Give Live Birth. How Do Amphibians Reproduce? They breathe by using their lungs. Most of the reptiles lay the egg on the ground and eat other animals for survival.
Mammals are one of the five classes of vertebrate animals. Mammals give birth to live young and feed their young with the milk secreted from their mammary glands. Besides these characteristics, mammals are distinguished from other classes by some other characteristics. They have hair covered all over their body. They also have sweat glands on their skins. Mammals have a lower jaw bone firmly attached to the skull.
The lower jaw bone is one continuous bone. Biologists believe that the lower jawbones of the reptilian jaw have evolved into the three middle ear bones of mammals. Mammals have specialized teeth, like morals which are used for grinding food, and canines which are used for tearing through the meat. They grow only two sets of teeth throughout their lives. Ventricles deliver oxygenated blood to the body organs and atria direct blood to the lungs to re-oxygenate the body. As a result, the mammalian body always remains warm.
The Mammalia class has produced a diverse habitat and form. Reptiles lack a fully developed secondary palate, which is a characteristic feature of Mammals. This enables the mammals to facilitate breathing while swallowing; a privilege that Reptiles lack.
Crocodiles are an exception. Ribs arise from all the vertebrae in Reptiles. However there are variations among them. These may form the carapace and plastron as in turtles external or may be limited to the trunk as in snakes snakes.
In Mammals, this is limited to the thoracic vertebrae and ribs never form an external case. Caudal ribs are completely absent. Teeth : Teeth are continuously replaced in Reptiles Polyphyodont. However they are produced only twice in the lifetime Diphyodont in Mammals. Circulatory System: As opposed to a four chambered heart in Mammals, Reptiles have a three chambered heart, with an exception of crocodiles.
Although two auricles are present in them, the septum separating the ventricles is incompletely developed. Respiratory System: Both Mammals and Reptiles breathe through lungs. However some aquatic species of the latter use skin and cloaca additionally to exchange gases Diaphragm facilitates extra room for the lungs to expand during respiration.
This structure is lacking in the Reptiles. Crocodiles are an exception to this. Metabolism: Reptiles are ectothermic and poikilothermic animals.
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