1. Section 1 – Cells, Tissues and Organisms
National 5 Unit 2
Multicellular Organisms
Section 1 – Cells, Tissues and Organisms

2. Learning Intentions
On completion of this unit you should be able to:
State that multicellular organisms contain more than one cell type.
State what is meant by a specialised cell
State that plant cells have a structure that allows the to carry out their function and give an example.
State that animal cells have a structure that allows them to carry out their function and give an example.
Describe how a tissue is formed
Describe how an organ is formed
Give examples o tissues and organs and the body system they are involved with in animals
Give examples of tissues and organs and the system they are involved with in plants.

3. Types of Cells
cheek cells
Palisade Mesophyll
Sperm Cell
Nerve cells

4. Stoma Blood cells For example - There are nearly 6 million
cells in one drop of blood
Stoma

5. Complete the table in notes

6. Can you think of any examples of multicellular organisms?

7. What are multicellular organisms?
Multicellular organisms have more than one cell type and are made up of tissues and organs.
Copy this definition into the bottom of page 3.

8. Levels of Organisation in Animals
Animals have levels of organisation in their bodies that allows them to function efficiently.

9. Plant Transport Tissue
Types of Tissue
Bone Tissue
Skin Tissue
Plant Transport Tissue

10. Specialised Cells
Specialised cells that perform specific functions group together to form tissues e.g. muscle cells group together to form muscle tissue.
Tissues work together to form organs with specific functions e.g. the heart contains muscle and nervous tissue.
The cells in organs are specialised for their function e.g. the muscle cells in the heart are able to contract in a regular pattern. This allows the heart to beat and pump blood round the body.
Organs work together forming a system. The heart is part o the circulatory system, which also includes the blood vessels.

12. Types of Organs
Brain
Leaf
eye

13. A collection of systems working together is called an organism

14. Success Criteria
I can state that multicellular organisms have more than one cell type and are made up of tissues and organs.
I can recognise that the structure of a cell is related to its function.
I can give examples of how cell structure is related to its function.