Key Points
Key Points: Frog
- Frogs (Rana tigrina is the most common species in India) are cold-blooded (poikilothermic) amphibians belonging to the class Amphibia, phylum Chordata.
- Frogs can change colour to blend with their surroundings, a process called camouflage or mimicry, which protects them from predators.
- Dormancy during summer is called aestivation, and dormancy during winter is called hibernation; frogs seek shelter in deep burrows during both.
- Cardiac muscle tissue is branched with communication junctions at fusion points, found only in the wall of the heart and is responsible for its rhythmic contraction and relaxation.
