OrganisationTopic Summary
Knowledge Organiser
Part of Tissues, Organs and Organ Systems — GCSE Biology
This topic summary covers Knowledge Organiser 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 12 of 14 in this topic. Use this topic summary to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 12 of 14
Practice
18 questions
Recall
22 flashcards
Knowledge Organiser
Key Terms
- Cell: Smallest unit of life; carries out all life processes
- Tissue: Group of similar cells performing one function
- Organ: Different tissues working together; specific function
- Organ system: Group of organs performing a major function
- Epithelial tissue: Lining/covering tissue; protection and absorption
- Emergent property: A capability that only appears at a higher organisational level
Must-Know Facts
- Hierarchy: Cell → Tissue → Organ → Organ system → Organism
- The heart contains muscle, nervous, connective and epithelial tissue
- A leaf is a plant organ containing palisade, spongy, xylem, phloem and epidermal tissues
- Organ systems are interdependent — failure in one affects others
- Structure relates to function at every level of organisation
- Plant organs: leaf (photosynthesis), root (absorption), stem (support/transport), flower (reproduction)
- Animal tissue types: muscle, nervous, epithelial, connective
- Plant tissue types: xylem, phloem, palisade, spongy mesophyll, epidermal