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Amphibia, Reptilia, Aves and Mammals Video Lecture | Zoology Optional Notes for UPSC

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FAQs on Amphibia, Reptilia, Aves and Mammals Video Lecture - Zoology Optional Notes for UPSC

1. What are the main characteristics that differentiate Amphibia from Reptilia?
Ans. Amphibia, such as frogs and salamanders, typically have moist skin, undergo metamorphosis, and require water for reproduction. In contrast, Reptilia, including snakes and lizards, have dry, scaly skin, do not undergo metamorphosis, and can reproduce in dry environments.
2. How do Aves adapt to their environment for flight?
Ans. Aves, or birds, have several adaptations for flight, including lightweight bones, a streamlined body, and specialized feathers for lift and aerodynamics. Their respiratory system is highly efficient, allowing for increased oxygen intake during flight.
3. What are the key differences between Mammals and other vertebrate classes like Amphibia and Reptilia?
Ans. Mammals are characterized by the presence of mammary glands for nursing young, hair or fur on their bodies, and three middle ear bones. In contrast, Amphibia and Reptilia do not possess these features and have different reproductive methods.
4. What types of environments do Amphibians typically inhabit, and how does this affect their life cycle?
Ans. Amphibians typically inhabit both terrestrial and aquatic environments, which affects their life cycle as they usually require water for breeding. Their eggs are laid in water, and the larvae often live in aquatic habitats before undergoing metamorphosis to become terrestrial adults.
5. How do Mammals regulate their body temperature compared to Reptiles?
Ans. Mammals are endothermic, meaning they regulate their body temperature internally through metabolic processes, allowing them to maintain a constant temperature regardless of the environment. In contrast, Reptiles are ectothermic, relying on external heat sources to regulate their body temperature.
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