Ear to Ear Class 4 EVS Chapter 2 CBSE Notes - 2025-26
FAQs on Ear to Ear Class 4 EVS Chapter 2 CBSE Notes - 2025-26
1. What is the main concept to revise in the Class 4 EVS chapter 'Ear to Ear'?
The main concept in 'Ear to Ear' is learning to identify animals based on their physical features. This involves looking at their ears (whether they are visible or hidden), their skin (if it has fur/hair or feathers/scales), and understanding the connection between these features and whether an animal lays eggs (oviparous) or gives birth to babies (viviparous).
2. How can we quickly identify animals by looking at their ears?
You can quickly identify animals by their ears with a simple rule. Animals with external, visible ears, like a deer, elephant, or cat, are typically mammals. Animals whose ears are not easily visible, like birds which have tiny holes covered by feathers, or lizards and snakes, are usually not mammals.
3. How do animals without visible ears, like birds and lizards, hear?
Animals without visible outer ears still have ways to hear. Birds have small holes on the sides of their heads, which are usually covered by feathers. These holes are their ears. Similarly, lizards have tiny holes that serve as ears. Snakes are different; they mainly feel vibrations from the ground through their skin and bones to 'hear'.
4. What is the connection between an animal's ears, its body hair, and how it gives birth?
The chapter teaches a key connection: Animals that have visible external ears and hair or fur on their body usually give birth to live young ones. These animals are called mammals. For example, a dog has visible ears and fur, and it gives birth to puppies. This is a fundamental concept for quick revision.
5. How are animals with feathers different from animals with fur in terms of their ears and young ones?
Animals with feathers (like birds) and animals with fur (like mammals) show a clear pattern of differences which is a key concept for revision:
Animals with Feathers: They do not have external ears (only small holes) and they lay eggs.
Animals with Fur: They have visible external ears and they give birth to live babies.
This comparison is a great way to remember the main groups discussed in the chapter.
6. Why does a tiger have patterns on its skin?
A tiger has stripes on its skin for camouflage. This pattern helps it blend into the tall grass and shadows of its habitat, making it easier to hide from other animals. The chapter 'Ear to Ear' discusses different skin patterns, like stripes on tigers and spots on leopards, as another key concept for identifying different animals.
7. If a lizard has holes for ears, does that mean it lays eggs? How can we use this concept for other animals?
Yes, that is correct. The key concept from the chapter helps us predict this. Since a lizard does not have visible external ears and has scales instead of hair, we can conclude that it lays eggs. You can apply this same logic for revision: check for external ears and body hair. If both are absent, the animal, like a frog, snake, or fish, most likely lays eggs.
