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Important Questions

Cell - The Unit of Life

ICSE · Class 9 · Biology

Most important questions from Cell - The Unit of Life for ICSE Class 9 Biology board exam 2026. MCQs, short answer, and long answer questions with marks.

42 questions38 flashcards5 concepts

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A comparison chart highlighting key differences between prokaryotic and eukaryotic cells, including nucleus, membrane-bound organelles, size, ribosomes, and DNA structure.
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42 Questions·
multiple choicemultiple correcttrue falsetext answermatching

Sample Questions

1multiple correct

Which of the following are parts of the cell theory?

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Cell is the smallest unit of structure of all living things, Cell is the unit of function of all living things, All cells arise from pre-existing cells

The cell theory has three main points: cells are the basic structural unit, functional unit, and all cells come from existing cells. Not all cells have chloroplasts, and cells cannot be created from non-living matter.

2true false

The cell membrane is selectively permeable.

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True

The cell membrane is selectively permeable, meaning it allows only certain substances to pass through while preventing others from entering or leaving the cell.

3text answer

The green pigment in chloroplasts is called ________.

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Chlorophyll

Chloroplasts are green because they contain the pigment chlorophyll. The chapter states that chloroplasts are green coloured plastids and that chlorophyll is their green pigment. Other pigments like carotene and xanthophyll are associated with other colours, while anthocyanins are not plastid pigments.

4matching

Match the organelles with their functions:

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Ribosome - Protein synthesis

Each organelle has specific functions: ribosomes make proteins, lysosomes digest waste, Golgi apparatus packages and secretes materials, and nucleus controls cell activities.

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Frequently Asked Questions

What are the important topics in Cell - The Unit of Life for ICSE Class 9 Biology?
Key topics in Cell - The Unit of Life include Cell - The Unit of Life: Complete Concept Map, Cell Organelles — Complete Overview, Cell Organelles - Overview Mind Map. These are the concepts ICSE Class 9 examiners draw on most — study them first, then practise related questions.
How to score full marks in Cell - The Unit of Life — ICSE Class 9 Biology?
Understand the core concepts first, then work through the 42 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 Cell - The Unit of Life?
There are 42 practice questions available for Cell - The Unit 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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