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Animals Around Us - Animal Movements and Eating Habits

Grade 3CBSE

Review the key concepts, formulae, and examples before starting your quiz.

🔑Concepts

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Herbivores: Animals that eat only plants, fruits, and vegetables. Examples include cows and deer. They have sharp front teeth (incisorsincisors) for biting and flat back teeth (molarsmolars) for grinding.

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Carnivores: Animals that eat the flesh of other animals. Examples include lions and tigers. They have long, pointed teeth (caninescanines) to tear flesh.

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Omnivores: Animals that eat both plants and the flesh of other animals. Examples include humans, bears, and crows.

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Gnawing: Some animals like rabbits and squirrels have very sharp front teeth to bite into nuts and seeds. This is called gnawinggnawing.

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Chewing the Cud: Ruminants like cows and buffaloes swallow food without chewing. Later, they bring it back to the mouth to chew it properly. This process is called ruminationrumination.

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Movement in Water: Fish use finsfins and tails to swim, while penguins and turtles use flippersflippers.

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Movement in Air: Birds have hollowhollow bones to make their bodies light and wingswings powered by strong muscles to fly.

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Movement on Land: Most mammals use four legs to walk or run. Reptiles like snakes have no legs and use scalesscales or musclesmuscles to crawl.

📐Formulae

Diet=Plants Only  ⟹  Herbivore\text{Diet} = \text{Plants Only} \implies \text{Herbivore}

Diet=Flesh Only  ⟹  Carnivore\text{Diet} = \text{Flesh Only} \implies \text{Carnivore}

Diet=Plants+Flesh  ⟹  Omnivore\text{Diet} = \text{Plants} + \text{Flesh} \implies \text{Omnivore}

Light Body=Hollow Bones+Feathers\text{Light Body} = \text{Hollow Bones} + \text{Feathers}

💡Examples

Problem 1:

Identify the eating habit of a squirrel that eats nuts using its sharp front teeth.

Solution:

The squirrel is a GnawerGnawer.

Explanation:

Animals like squirrels and rats have sharp, long front teeth in both the upper and lower jaws to bite into hard nuts and seeds. This action is known as gnawinggnawing.

Problem 2:

How does a frog move differently from a bird?

Solution:

A frog hopshops or leapsleaps on land and swimsswims in water, while a bird fliesflies in the air.

Explanation:

Frogs have strong back legs for jumping and webbed feet for swimming. Birds have wingswings and a streamlinedstreamlined body shape to fly.

Problem 3:

Categorize a bear based on its food habits.

Solution:

A bear is an OmnivoreOmnivore.

Explanation:

Bears eat berries and honey (plant-based/insect-based) as well as fish and meat (flesh), satisfying the definition: Omnivore=Plant-eater+Meat-eater\text{Omnivore} = \text{Plant-eater} + \text{Meat-eater}.