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Cell - The Structure and Functions — Syllabus

ICSE · Class 6 · Biology

What Cell - The Structure and Functions covers in ICSE Class 6 Biology: 4 topics, for the 2026-27 session. Part of the ICSE Class 6 Biology syllabus.

94 questions30 flashcards4 concepts

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An infographic comparing the three main types of plastids: chloroplasts (green, photosynthesis), chromoplasts (colored, pigment storage), and leucoplasts (colorless, storage of starch, oils, proteins
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4 Topics · ICSE Class 6 Biology · 2026-27

Topics in Cell - The Structure and Functions

1

Discovery of the Cell

  • Robert Hooke discovered cells in 1665 while observing a thin slice of cork under a microscope.
  • He saw box-like structures and called them 'cells' because they looked like small rooms (like monks' cells in a monastery).
  • Antonie van Leeuwenhoek was the first to observe living cells, such as bacteria and red blood cells, using a simple microscope.
2

Cell Shape, Size, and Number

  • Cells vary in shape (spherical, oval, spindle-shaped, irregular, rectangular) depending on their function.
  • Red blood cells are spherical to carry more oxygen; nerve cells are long to transmit signals.
  • Amoeba has an irregular (amoeboid) shape and can change it to move and eat.
3

Cell Theory

  • Proposed by Schleiden, Schwann, and Virchow.
  • All living organisms are made of one or more cells.
  • The cell is the structural and functional unit of life.
4

Structure of a Cell

  • All cells have three main parts: cell membrane, cytoplasm, and nucleus.
  • Plant cells have additional structures: cell wall, large vacuole, and plastids.
  • Animal cells lack cell wall and plastids; they have small vacuoles.

Key Concepts

Central concept: Cell

Discovery of the CellCell TheoryTypes of Organisms Based on CellsCell Shape and SizeStructure of a CellCell OrganellesPlant Cell vs Animal CellFunctions of Cells

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Frequently Asked Questions

What are the important topics in Cell - The Structure and Functions for ICSE Class 6 Biology?
Key topics in Cell - The Structure and Functions include Discovery of the Cell, Cell Shape, Size, and Number, Cell Theory, Structure of a Cell. Study these first, then practise questions on each for Class 6 exams.
How should I revise Cell - The Structure and Functions for Class 6 exams?
Learn the core ideas first, then work through the 94 practice questions on Cell - The Structure and Functions. 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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