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Multicellular Organisms. Watch the video. and answer the questions. Multicellular Organisms. Multicellular organisms are organisms made up of many different cells. Put these words in order of size, largest to smallest. Organs. Cells. Organism. Systems. Tissues. - PowerPoint PPT Presentation
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Multicellular Organisms
Watch the video...
and answer the questions.
Multicellular Organisms
Multicellular organisms are organismsmade up of many different cells.
Put these words in order of size, largest to smallest.
Cells
Tissues
Organs
Systems
Organism
Cells to OrganismsCell – the basic unit of life.Tissue – a group of cells specialised to perform a particular function.Organ – A structure made of different tissues which are coordinated to perform one or more functions.System – A group of related tissues and organs.
Your body is made on 100 trillion cells. Try to identify the cells
below...
AB
C
D + E
What about plant cells...
FG
Collect a microscope...
• Look down the microscope at 3 different cells which might be found in a multicellular organism.
• Complete the table provided.
Microscopic discoveries...Diagram
Name
Structure
Function
Task
Use the sheet provided to match the cell
to it’s structure and function.
Task• You have been allocated a cell type
in pairs. • Build a model which will show the
key features of your cell type.• Explain how the key structures relate
to their function.• Prepare to present your model and
explanation to the class.
Question Time!1. Why are xylem cells needed in the
root, stem and leaves of a plant?2. Explain how the structure of a red
blood cell makes it suited to it’s function.
3. Explain how palisade mesophyll cells are particularly suited to carrying out photosynthesis.