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OrganisationKey Facts

How Systems Work Together

Part of Tissues, Organs and Organ Systems · GCSE GCSE Biology revision

This key facts covers How Systems Work Together 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 6 of 15 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 6 of 15

Practice

20 questions

Recall

22 flashcards

🔗 How Systems Work Together

No organ system works in isolation - they all depend on each other for the organism to survive.

Animal System Interactions:

  • Digestive + Circulatory: Digested nutrients are absorbed into the blood and transported to all cells
  • Respiratory + Circulatory: Oxygen from lungs is carried by blood to all tissues; CO₂ is carried back to lungs
  • Nervous + Muscular: Brain controls muscle contractions for coordinated movement
  • Excretory + Circulatory: Kidneys filter waste from blood to maintain chemical balance

Plant System Interactions:

  • Root system + Shoot system: Roots absorb water/minerals for leaves; leaves make food for roots
  • Transport + Photosynthetic systems: Water transported to leaves enables photosynthesis; sugars transported to all parts
  • Gas exchange + Photosynthesis: Stomata allow CO₂ in for photosynthesis and O₂ out as waste

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.

Structure-Function RelationshipsThe Organizational Hierarchy of LifeBuilding Life's ArchitectureLevels of Organisation — Cell → Tissue → Organ → System

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.

20 questions on Tissues, Organs and Organ Systems — practise free

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Structure-Function Relationships

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The Organizational Hierarchy of Life