NCERT Curiosity · Class 6 · Science
Diversity in the Living World
Every bird has its own chirp. From grass to hibiscus, crows to camels, life around us comes in endless variety.
Plants Big and Small Leaves and Roots Animals and Habitats Protecting Habitats
Key idea
The Variety of Life
Every living thing plays a part — trees feed and shelter birds, animals help spread seeds.

Biodiversity

The variety of plants and animals found in a particular region is called its biodiversity.

Grouping

Arranging living things by shared features is called classification — height, colour, or habitat can all be used.

Key idea
Herbs, Shrubs and Trees
Sorted by height and stem — from soft and short to tall and woody.

Herb · small

Soft, green stem, branches near the ground. Example: tomato.

Shrub · medium

Hard, thin, woody stem, branches close to the ground. Example: rose.

Tree · tall

Hard, thick, woody stem, branches high up. Example: mango.

Key idea
Two Plant Families
Leaf pattern, root type, and seed all travel together as a set.
Dicot

Reticulate (net-like) venation, a taproot, and two seed cotyledons. Example: chickpea, mango.

Monocot

Parallel venation, fibrous roots, and just one seed cotyledon. Example: maize, wheat.

Key idea
Bodies Built for Movement
A body's shape matches how — and where — it needs to move.

Ant

Crawls on six legs

Pigeon

Walks and flies with legs and wings

Fish

Swims using streamlined fins

Goat

Walks on land using four legs

Key idea
Habitats: Land, Water and Both
Where an organism lives shapes everything about its body.

Terrestrial

Lives on land — forests, deserts, mountains. Example: camel.

Aquatic

Lives in water — ponds, lakes, oceans. Example: sea turtle.

Amphibian

Lives both on land and in water. Example: frog.

Key idea
Adaptations: The Camel Example
Two deserts, two very different camels.
Hot-desert camel

Long legs, one hump, short hair — built to lose heat fast.

Cold-desert camel

Shorter legs, two humps, long shaggy hair — built to keep heat in.

Key idea
When Habitats Are Lost
Efforts across India work to protect the habitats living things depend on.

Project Tiger · 1973

A major Indian conservation effort to protect tigers and their forest habitat.

Cheetah Return · 2022

Brought cheetahs back to Indian grasslands after local extinction.

Sacred Groves

Forest patches protected by communities for generations.

Chapter · key terms to remember
Key Terms

Biodiversity

Variety of plants and animals in a region.

Habitat

The place where an organism lives.

Adaptation

A feature that helps survival in a habitat.

Chapter · key terms to remember
More Key Terms

Taproot

One thick main root with side roots.

Fibrous root

A bunch of thin, similar roots.

Venation

The pattern of veins in a leaf.

Chapter · key terms to remember
More Key Terms

Dicot / Monocot

Plants with two / one seed cotyledon(s).

Sacred grove

A community-protected forest patch.

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