Class Reptilia
Class Reptilia
Reptiles are terrestrial vertebrates with a dry, scaly, impermeable skin covered by scales. Their characteristics are :
They have limbs which are absent in snakes and some lizards.
They respire through lungs.
The heart has two auricles and a ventricle which is partly divided.
They are cold-blooded (poikilotherms) , i.e., their body temperature varies according to that of the surroundings. (Fish and amphibians too are cold-blooded.)
Fertilization is internal. The fertilized eggs are laid with a shell and the young reptile hatches out of the egg.
Example: Turtles, house lizards (Hemidactylus), snakes and crocodiles are reptiles. In crocodiles, the heart is four-chambered. Others have two auricles and incompletely divided ventricles.
Draco is a genus of agamid lizards that are also known as flying lizards, flying dragons or gliding lizards.
The limbs are present in ___________________ Reptile. | |||
| Right Option : C | |||
| View Explanation | |||
The body of an organism "X" is covered with dry and cornified skin to prevent water loss. They lay eggs on land. The animal "X" belongs to which class of Chordata ? | |||
| Right Option : B | |||
| View Explanation | |||
In crocodile the heart is ______________ chambered . | |||
| Right Option : A | |||
| View Explanation | |||
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