Class 9 Social Science: Life on Earth — Very Short Questions & Answers
1. Why does India have diverse biomes? How does the local geography connect to the diversity?
Answer: India has diverse biomes because it features a wide range of landforms, elevations, and climate zones—from freezing mountains and dry deserts to humid tropical coasts. Local geography directly determines regional temperature, rainfall, and soil conditions, which creates unique natural habitats for different plant and animal communities.
2. Make a list of economically valuable native plants in your region and comment on their abundance.
Answer:
Bamboo and Timber trees: Abundant in wet and tropical forest areas; used extensively for construction and household handicrafts.
Tendu leaves & Mahua flowers: Plentiful in central deciduous forests; collected by local communities to earn daily livelihood.
Medicinal herbs (such as Neem, Tulsi, and Ashwagandha): Moderately to widely available; collected for traditional healthcare and medicines.
Wrightia tinctoria (Ivory wood): Found in southern deciduous forests; used as safe timber for making traditional wooden toys.
3. Prepare a map of your state or Union Territory showing national parks and sanctuaries.
Answer: Take an outline map of your State or Union Territory. Identify its major National Parks and Wildlife Sanctuaries using an atlas. Mark National Parks with a small green square and Sanctuaries with a small green circle, and clearly list their names in the map’s legend.
4. Study the impact of forest fires on people dependent on forests. Try to include the causes, losses, and preventive measures.
Answer:
Causes: Extreme heat, dry weather, accumulation of dry leaf litter, and human carelessness.
Losses: Destroys natural habitats, timber, and valuable produce like honey and medicinal herbs, directly taking away the income and food security of forest-dependent families.
Preventive Measures: Clearing dry vegetation to create firebreaks, regular forest patrolling by village councils, and using early fire-detection systems.
5. Why are forests often called the ‘lungs of the Earth’?
Answer: Forests are called the ‘lungs of the Earth’ because trees absorb carbon dioxide from the air and produce fresh oxygen through photosynthesis, keeping the atmosphere breathable and regulating global climate patterns.
6. If large forest areas continue to be destroyed, what do you think would be its long-term effect on the global climate?
Answer: Widespread deforestation releases stored carbon and drastically reduces oxygen production. This speeds up global warming, triggers erratic rainfall patterns, and increases severe climate disasters like prolonged droughts, soil erosion, and flash floods.
7. Discuss some traditional forest conservation methods with your grandparents or an elderly person.
Answer: Key traditional practices include:
Sacred Groves: Dedicated forest patches protected strictly by local communities due to cultural and spiritual beliefs.
Customary Rules & Rituals: Traditional taboos that forbid cutting fruit-bearing or young trees, alongside rituals honoring nature before harvesting forest produce.
8. How do forest dwellers contribute to the protection and conservation of forests?
Answer: Forest dwellers protect natural habitats by using traditional ecological knowledge to harvest produce without damaging trees. They prevent illegal logging, control seasonal forest fires, and regulate local resource use collectively through village-level councils.
9. What is a forest fire? Prepare a plan for prevention and mitigation of forest fires.
Answer:
Definition: A forest fire is an uncontrolled fire that sweeps rapidly through woodland vegetation, grasslands, or forests.
Prevention & Mitigation Plan:
Clearing ground vegetation along boundaries to create natural firebreaks.
Setting up community-led volunteer watches to spot and put out small fires early.
Running awareness campaigns to educate visitors about the dangers of leaving open campfires or lit matches in dry areas.