Q1
Diversity among living organisms mainly refers to:
Avariety in form and habitat
Ball organisms looking alike
Conly plants having variety
Donly animals having variety
CBSEClass 6 (CBSE)ScienceCh 2 · Topic 1
Variety in Living Organisms
Exploring the huge variety of living organisms found on Earth.
Core concept
This variety is not random — it reflects how organisms have changed over long periods of time to survive in different environments. A cactus in a desert has thick, water-storing stems, while a water lily has broad, flat leaves to float on ponds — both are adaptations shaped by their very different surroundings. Studying this diversity helps scientists understand evolution, ecosystems, and how to conserve species that might be at risk of extinction due to habitat loss.
Exam highlight
Key diagram
- Show images of a range of organisms from bacteria to elephants to illustrate diversity.
Keywords worth remembering
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Quick notes
• Living organisms range from microscopic bacteria to enormous whales.
• Diversity includes differences in size, shape, structure, and habitat.
• New species are still being discovered in unexplored regions.
• Diversity reflects long-term adaptation to different environments.