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Stomata Lab
Click video to play
Begin your flow chart.
water droplets
Plants have special pores called
stomata to allow passage of gases into
and out of the plant leaf. This is the
site where carbon dioxide is taken into
the leaf and oxygen is released from
the leaf. Water can also exit the leaf
through these pores.
The stomata pores are surrounded on
both sides by jellybean shaped cells
called guard cells. These cells expand
or contract to open or close the
stomata. Guard cells also close when
the plant is dehydrated or in dry
weather to keep more water in the
plant.
The number of stomata on the
underside of a leaf can tell a lot
about a plant. Usually, a high
concentration of stomata indicates
fast growth and a wet climate.
Lower concentrations of stomata
indicate lower rates of
photosynthesis and growth and are
adaptations for dry weather.
What could you ask after seeing
the video?
Where is the water
coming from?
With the information you have,
what is your hypothesis?
This is done by yourself.
Predict what you will find on the
underside of the leaf.
Use the microscopes to explore the
different leaves.
Complete this portion while you are
looking at the leaves
Open and Closed Stomata
Open and Closed Stomata
Chlorophyll
Describe what you saw.
Based on what you saw, how
would you answer your original
question?
Circle one of these based on whether
your hypothesis was correct or
incorrect.
eye piece
7.
body tube
nosepiece
8.
arm
3.
objectives
9.
stage
4.
stage clips
10. course adjustment
5.
diaphragm
11. fine adjustment
6. light source
12.
base
Complete this question on your
own.
Complete these questions
These questions are the MOST
important