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Biodiversity for Sustenance of Mankind

ICSE · Class 11 · Geography

Quick revision notes for Biodiversity for Sustenance of Mankind — ICSE Class 11 Geography. Key concepts, formulas, and definitions for last-minute revision.

65 questions36 flashcards5 concepts

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Key Topics to Revise

1

Biodiversity and Human Life

  • Human beings have depended on nature for food, clothing, shelter, and survival since early times.
  • Natural resources such as air, water, land, and forests are essential for human life.
  • Growing population and rising living standards have increased the pressure on natural resources.
2

Food Chain and Ecological Roles

  • Plants and algae are at the first level of the food chain and are called primary producers.
  • Primary producers use light energy to convert carbon dioxide and water into carbohydrates through photosynthesis.
  • Primary consumers are plant-eating animals such as insects, mice, and goat.
3

Biodiversity as a Source of Food

  • Only a handful of plants out of about 4,26,752 discovered plant species are used as food crops.
  • Major food crops include wheat, rice, maize, pulses, millets, and vegetables.
  • These crops provide carbohydrates, proteins, vitamins, and other nutrients.
4

Biodiversity and Medicines

  • Plants are used to extract many drugs and medicines.
  • Certain animal products are also used in medicine.
  • Biological diversity provides raw materials for pharmacists to prepare new drugs.

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Full Notes

Key Concepts

Biodiversity includes the variety of plantsA food chain is the systematicPlants and algae are the firstPrimary consumers are plantSecondary consumers feed on primary consumers

Frequently Asked Questions

What are the important topics in Biodiversity for Sustenance of Mankind for ICSE Class 11 Geography?
Biodiversity for Sustenance of Mankind covers several key topics that are frequently asked in ICSE Class 11 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Biodiversity for Sustenance of Mankind — ICSE Class 11 Geography?
Understand the core concepts first, then work through the 65 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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