Biology

# 13. Investigation into stomatal numbers in leaves

**01:24**Why do you calculate the mean number of stomata?**01:38**What is the actual diameter of the field of view in mm?**01:45**What is the radius of the field of view (r)?**01:49**What is the area of the field of view in mm^{2}(πr^{2})?**01:56**What is the mean number of stomata per mm^{2}?

leaves

white tile

fine forceps

fine scissors / scalpel

clear nail varnish / PVA glue

microscope slides

cover slips

dropping pipette

deionised water

microscope

Hazard | Risk | Control measure |
---|---|---|

Scalpel / scissors |
Cuts to skin |
Cut downwards and away from body |