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Stoma density and pollutionFeatured science projectScience project video


It is observed that the greater the concentration of traffic where the sample leaves are collected, the lesser the amount of stomata found on the sample leaves.

Number of cars per hour Less than 5 Between 5 and 20 More than 20
Average number of stomata 37 33 29

The graph below represents the results of our science experiment.

plant stomata science fair project

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Complexity level:
Project cost ($):
Time required:
1 hour to prepare, 3 days for observation
Material availability:
Easily obtained. Access to a microscope is required
Safety concerns:

Basic safety requirements