trykarkedekho ▶ learn
Grade 6/ Science/ Diversity in the Living World
Chapter 2 · NCERT Class 6 Curiosity

Diversity in the Living World

A frog, a mango tree, a sparrow, a stone – how do we tell what is alive? And why does a cactus look so different from a fish? Tap each idea to sort the living world.

🦋 3 topics⏱ ~25 min📝 11-question quiz
0%

Play with it

Six ideas about life

From telling living from non-living to sorting the whole living world. Tap each term to see what it means and where you meet it.

Explore · The living worldtap a term

Learn

The three big ideas

  • Living things share a set of signs: they need food (nutrition), respire (exchange gases), grow, respond to stimuli, reproduce, excrete (remove wastes), move, and have a life span (they are born, grow and die).
  • Non-living things – a rock, water, a chair – do not show all these signs together.
  • Plants respond too: a touch-me-not folds its leaves on touch, and a shoot bends towards light. Plants also move – slowly – though they stay rooted.
Common mistake: thinking “if it moves, it is alive.” A river and a fan move but are non-living, while a still seed is very much alive. Look for the full set of life signs, not just one.
  • Habitat – the natural home where an organism finds food, water, shelter and space.
  • Two broad kinds: terrestrial (on land – forest, desert, grassland) and aquatic (in water – pond, river, sea).
  • Adaptation – special features and habits that help an organism survive in its habitat.

Worked example. Why does a cactus look so unlike a fish?

A cactus lives in a dry desert: its thick stem stores water and its leaves shrink to spines to lose less water. A fish lives in water: its streamlined body and fins help it swim, and its gills take in oxygen from the water. Each is shaped by its habitat.

  • We group living things by shared features – where they live, what they eat, their body shape – so the huge variety becomes easier to study.
  • Plants by their stem: herbs (small, soft green stem – tulsi), shrubs (bushy, hard stem near the base – rose), trees (tall, thick woody trunk – mango), climbers (weak stem, need support – money plant) and creepers (stem spreads on the ground – pumpkin).
  • Animals by their food: herbivores eat plants (cow, deer), carnivores eat other animals (tiger, lion) and omnivores eat both (crow, and humans).

Where you’ll meet it

Diversity at work

National parks & sanctuaries

To protect a tiger or an elephant, we must protect its whole habitat – the food, water and space it needs. India’s sanctuaries work by keeping these natural homes intact, not just the animals.

Choosing crops

A farmer in a dry region grows hardy crops like bajra that suit the local soil and rainfall, while a farmer in a wet area grows paddy. Matching the plant to its habitat is good science and good farming.

Medicines from plants

The rich diversity of plants is a treasure chest of medicines – neem, tulsi and many others have healing uses. Losing plant variety means losing cures we may not even have discovered yet.

Check yourself

Competency quiz

Modelled on the competency-based pattern — MCQ, assertion–reason and a case study, testing whether you can use the ideas, not just recall them.

Score 0/12

Interactive built to the OpenMAIC approach (THU-MAIC, MIT). Content from the NCERT Class 6 Curiosity textbook (ncert.nic.in).

BuffyBuffyyour study buddy
Buffy
Hi! Ask me about living versus non-living things, the signs of life, habitats and adaptation, or how plants and animals are grouped.

Buffy is an AI helper and can be wrong — always check your NCERT textbook.

Found this useful? Pass it to another student — WhatsApp