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OrganisationKey Facts

The Organizational Hierarchy of Life

Part of Tissues, Organs and Organ Systems — GCSE Biology

This key facts covers The Organizational Hierarchy of Life within Tissues, Organs and Organ Systems for GCSE Biology. Organizational hierarchy from cells to organ systems, tissue types in plants and animals, structure-function relationships, and system interactions It is section 2 of 14 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.

Topic position

Section 2 of 14

Practice

18 questions

Recall

22 flashcards

📋 The Organizational Hierarchy of Life

1. CELLS → Individual specialized units (from Topic 1)
Examples: Muscle cell, nerve cell, palisade cell, root hair cell
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2. TISSUES → Groups of similar cells working together
Examples: Muscle tissue, nervous tissue, xylem tissue, phloem tissue
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3. ORGANS → Groups of different tissues working together
Examples: Heart, brain, leaf, root
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4. ORGAN SYSTEMS → Groups of organs working together
Examples: Circulatory system, nervous system, transport system in plants
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5. ORGANISM → All systems working together for life
Examples: Human, oak tree, dog, rose plant

Keep building this topic

Read this section alongside the surrounding pages in Tissues, Organs and Organ Systems. That gives you the full topic sequence instead of a single isolated revision point.

Building Life's ArchitectureAnimal Organization ExamplesPlant Organization ExamplesStructure-Function Relationships

Practice Questions for Tissues, Organs and Organ Systems

What is the correct order of biological organisation from simplest to most complex?

  • A. Organ → Tissue → Cell → Organ System
  • B. Tissue → Cell → Organ → Organ System
  • C. Cell → Tissue → Organ → Organ System
  • D. Cell → Organ → Tissue → Organ System
1 markfoundation

Describe the functions of glandular tissue and epithelial tissue in animals.

3 marksstandard

Quick Recall Flashcards

What is an organ?
A group of different tissues working together to perform a specific function.
What is a tissue?
A group of similar cells that work together to perform a specific function.

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Building Life's Architecture

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Animal Organization Examples