Grade 1, Science Olympiad (CBSE) - Animals 

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Grade 1  |   Science  |   Animals, Animals, Olympiad, CBSE, ICSE, Maths Olympiad, Science Olympiad, English Olympiad

Animals

We see different types of animals around us. Some animals live on ground, such as cows, dog, cats, horses, etc. Many live in the water such as fishes. Some animals live resides on the tree such as monkey. All of these animals vary in sizes and help us in many ways. 

Classification of animals by feeding habit

Animals which eat only plants and grass are called herbivorous. They generally have flat, broad teeth. As they eat plants only they are called primary consumers.  E.g. cow, deer, etc

Animals which eat other animals are called carnivorous. They have sharp, pointed teeth to tear the flesh of their preys. E.g. tiger, snakes, etc

Animals which eat plants, as well as other animals are called omnivorous. E.g. Dog, Beer, etc.

Types of animals

There are three categories in which we divide animals into - 

• Wild animals

Some animals live in the forest and are called wild animals. Such as- Lion, Tiger, Elephant, Giraffe, Cheetah, etc. 

• Domestic animals

Some animals  help us by giving milk, flesh and eggs such as Cow, Goat and Hen respectively. Many of the animals are also used for transportation purpose such as Horse, Donkey, Ox, Camel, etc. 

• Aquatic animals

Some animals are adapted to live in water such as Fish, Dolphin, Frog, Crocodile, Tortoise. 

 Animals Home

There are three types of animals home :

Natural home

Animals living on tree, den, ground and water are living in natural shelters or homes.

E.g

• monkey, koala, squirrel lives on the tree.
• fishes and other water animals live in sea, river and pond
• lion, bear, tiger, bat and fox lives in den
• insects lives on the ground inside the grass or soil. like an ant, earthworm, etc.    

Home made by animals

Some animals build their own homes like a bird builds a nest, a rabbit makes a burrow 

Home made by humans

Human-made home for some animals like a shed for the cow, a stable for the horse, coop for hen, a kennel for dog, sty for pig barn for goat, etc.     

• Note Animals living in the jungle are wild animals, animals living with humans are domestic animals

Young ones of animals 

Classification of animals :

1. Terrestrial Animals:

Animals which live on land are called terrestrial animals. They generally have four legs. Terrestrial animals have well-developed sense organs. E.g. Tiger, Lion, Elephant, Dogs, Cat etc.

2. Aquatic Animals:

Animals which live in water are called aquatic animals. Many aquatic animals like fishes have special respiratory organs called gills. Gills consists of membranes and are connected with blood vessels. Gills extract dissolved oxygen from water and excrete carbon dioxide.

3. Aerial Animals:

Animals which spend most of their time in the air are called aerial animals. Birds come under this category.

4. Arboreal Animals: 

Arboreal animals live on trees. E.g. monkeys, lizards, squirrel, chameleon etc.

5. Amphibians:

Amphibians can live in water as well as land. Amphibians are cold-blooded. Amphibians don't have scaly skin. Their skin is slimy and permeable that means air and water can pass through it.Some amphibians have gills at the beginning of their life. Some examples of amphibians are frogs, toads, salamanders and caecilians.

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