Epidermal Leaf Tear

Use the following videos and information to help you make and understand what you can see in this slide

LEaf structure

You will now know that leaves are the main site of photosynthesis and the structure of leaves enable the efficient movement of the substances required and produced by photosynthesis. The underside of a leaf has lots of specialised structures that you will explore in the slide you prepare.

Watch this video to understand the mechanism of how the guard cells open and close the stomata.

How do Guard Cells work

A key structure seen in the leaf peel slide is the stomata (pores), surrounded by a pair of bean shaped guard cells. These pores enable the movement of gases into and out of the leaf for photosynthesis. Water is also lost via an open stoma, so the guard cells are crucial for controlling the amount of water loss in response to changing environmental conditions.

Leaf Peel Mount preparation

Watch this video along with a tutorial with your teacher to learn how to create this slide

Key Structures to Identify and Write about in this Slide

Step 1: Draw

After creating the leaf peel slide, draw and label the structures seen in your slide

(follow all biological drawing rules, include a detailed title, magnification and stain information)

How could the drawing above be improved?

*** Show Mrs J your completed drawing and notes ***

Step 2: Written Requirements

Select two of the key organelles that are visible in your slide and labelled in your drawing, make notes about the following for each organelle (see lesson PowerPoints for more support on each of these structures)

Shape and structure of the organelle
Location of the organelle
The function of the organelle
How this organelle (function, shape, structure or location) enables the cell to carry out their specific function

Use this PowerPoint to help you revise the information needed for this slide

Revision worksheet link - complete this then share it back to your teacher for feedback

There is space in your scipad to practise drawing a leef peel slide on pg.: 93

Join the Year 12 Quizlet Class to find revision sets for this standard

Follow this link to a kahoot about leaf structure and function

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