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Study Plan

History of Life on Earth — Study Plan

NIOS · Class 10 · Science & Tech

A step-by-step study plan for History of Life on Earth, NIOS Class 10 Science & Tech: what to learn first, what to practise and when to revise.

44 questions38 flashcards2 formulas & key relations5 concepts

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A comparison illustration showing the peppered moth (Biston betularia) in two scenarios: before industrialization (light moths camouflaged on lichen-covered trees, dark moths visible) and after indust
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Study Plan

1
Day 1–2

Learn the Theory

Read the textbook chapter carefully. Note down definitions, formulas and key ideas. Focus on: 1. Origin of the Universe and Earth, 2. Origin of Life, 3. Diversification of Life.

2
Day 3

Practise

Solve the textbook exercises and extra practice questions. There are 44 questions available for this chapter.

3
Day 4

Revise & Test

Revise key points without looking at your notes. Take a practice quiz and mark weak areas for another pass.

4
Day 7

Spaced Revision

Come back to History of Life on Earth after a week. Use flashcards for quick recall and try past exam questions on this chapter.

What to Focus On

  • The universe formed 12 to 14 billion years ago.
  • The solar system came into existence 5-7 GY ago.
  • Earth is about 4.5 billion years old.
  • Life began around 3.8 GY ago, within the range 4.0 to 3.5 GY.
  • Cyanobacteria fossils in Australia are dated to 3.5 GY.
  • Oparin and Haldane proposed the primordial soup theory.
  • Life began with unicellular prokaryotes.
  • Prokaryotes dominated for nearly 3 billion years.
  • Photosynthesis increased atmospheric oxygen.

Common Mistakes to Avoid

The primitive earth had oxygen just like the present atmosphere.

The Oparin-Haldane theory and the hydrothermal vent hypothesis are the same theory.

Miller and Urey produced living cells in the laboratory.

Memory Tips

Age of the universe, solar system, Earth, and early bombardment

Primitive Earth atmosphere gases

Oparin-Haldane primordial soup theory

Miller-Urey experiment

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Frequently Asked Questions

What are the important topics in History of Life on Earth for NIOS Class 10 Science & Tech?
Key topics in History of Life on Earth include Origin of the Universe and Earth, Origin of Life, Diversification of Life, Darwin and Natural Selection. Study these first, then practise questions on each for the NIOS Class 10 board exam.
How should I revise History of Life on Earth for the NIOS Class 10 board exam?
Learn the core ideas first, then work through the 44 practice questions on History of Life on Earth. Revise 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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