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Important Questions

Origin of life

ICSE · Class 12 · Biology

Most important questions from Origin of life for ICSE Class 12 Biology board exam 2026. MCQs, short answer, and long answer questions with marks.

59 questions37 flashcards5 concepts

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59 Questions·
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Sample Questions

1multiple choice

The theory of spontaneous generation was supported by:

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Aristotle and Van Helmont

Aristotle (384–322 BC) and Van Helmont (1577–1644) supported spontaneous generation — the idea that life arises from non-living matter.

2multiple choice

Pasteur's experiment used a:

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Swan-necked (S-shaped) flask

Pasteur used flasks with S-shaped necks. Air could enter, but organisms in the air were trapped at the bend, keeping the broth sterile.

3multiple choice

The biochemical origin of life theory was proposed by:

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Oparin and Haldane

Aleksander I. Oparin (1924) and J.B.S. Haldane (1929) independently proposed the biochemical origin of life theory.

4multiple choice

Haldane described the primitive ocean as:

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Hot dilute soup

Haldane called the primitive organic molecule-rich ocean the 'hot dilute soup' — emphasising its warm temperature and dilute concentration of organic compounds.

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Frequently Asked Questions

What are the important topics in Origin of life for ICSE Class 12 Biology?
Key topics in Origin of life include Origin of Life — Complete Concept Map, Experiments Disproving Spontaneous Generation — Timeline, Chemical Evolution to First Life — Complete Pathway. These are the concepts ICSE Class 12 examiners draw on most — study them first, then practise related questions.
How to score full marks in Origin of life — ICSE Class 12 Biology?
Understand the core concepts first, then work through the 59 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
How many important questions are there in Origin of life?
There are 59 practice questions available for Origin of life. These cover multiple question types including MCQs, short answer, and long answer questions.

Sources & Official References

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

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