4th EVS NCERT Chapter 16
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– Animals that live on trees: Children should study the different animals that live on trees and their characteristics, such as bird feet, beaks, and teeth.
– Bird Feet – Different Kind for Different Needs: Birds have specialized feet for various purposes like swimming, climbing trees, walking on land, and catching prey.
– Bird Beaks – According to the Food: Birds have different types of beaks suited for tearing and eating meat, making holes, finding insects, sucking nectar, breaking seeds, and cutting various kinds of food.
– Animal Teeth: Animals have different types of teeth for specific purposes, such as cows having short front teeth for snipping grass and cats having sharp teeth for tearing meat. Snakes and squirrels also have unique dental characteristics【4:0†source】.
What are some different kinds of bird feet mentioned in the chapter and their purposes?
The bird feet mentioned are used for swimming in water, holding tree branches, climbing trees, walking on land, and catching prey.
Describe the different types of bird beaks mentioned in the chapter and their corresponding food habits.
The different types of bird beaks mentioned include tearing and eating meat, making holes in wood and tree trunks, finding insects and worms from mud and shallow water, sucking nectar from flowers, breaking and crushing seeds, and cutting and eating various kinds of food.
Provide examples of animals and their corresponding types of teeth discussed in the chapter.
Examples include cows with short front teeth for snipping grass, cats with sharp teeth for tearing and cutting meat, snakes with sharp curved teeth for swallowing prey whole, and squirrels with front teeth that keep growing throughout their life.
What is one unique feature about the way snakes consume their prey as mentioned in the chapter?
Snakes do not chew their prey; they swallow their food whole.
Explain the nesting habits of different birds described in the chapter.
Various birds have different nesting habits, such as the koel laying its eggs in a crow's nest, the crow building nests high up on trees, the dove nesting among the thorns of cactus plants, and the sparrow making nests in various places like on top of cupboards or behind mirrors.
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