Plants

In this lesson we are going to look at the structures of leaves. We will look at the jobs they do as part of the whole plants and in particular how they control the level of water in the plant.

Before you start

Print out the worksheet that is in the Resources section or alternatively download it to your computer to fill in digitally. 

You will need the following items for the practical investigation in this lesson :

Investigation 1 – a re-sealable bag and a plant or a twig with leaves from a garden or communal area. Ask an adult to help you find one. Investigation 2 – a marker per, 4 clear plastic water bottles, some Vaseline, cling film, and 4 long stem leaves which you can find in the garden or communal areas.

When you’re ready

Watch the video and carry out the work, including the investigation, as prompted by the scientist on the screen. Have fun!

Below is the list of key words you will come across during the course of the lesson:

adaptation
blade
cells
dependent variable
independent variable
leaf
margin
nutrients
petiole
record
results table
stoma
stomata
transpiration
veins