Multicellular Organisms
description
Transcript of Multicellular Organisms
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Multicellular Organisms
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Watch the video...
and answer the questions.
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Multicellular Organisms
Multicellular organisms are organismsmade up of many different cells.
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Put these words in order of size, largest to smallest.
Cells
Tissues
Organs
Systems
Organism
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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.
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Your body is made on 100 trillion cells. Try to identify the cells
below...
AB
C
D + E
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What about plant cells...
FG
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Collect a microscope...
• Look down the microscope at 3 different cells which might be found in a multicellular organism.
• Complete the table provided.
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Microscopic discoveries...Diagram
Name
Structure
Function
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Task
Use the sheet provided to match the cell
to it’s structure and function.
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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.
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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.