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Stomata Leaf Peel Count.

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Introduction

Kimberly Wong 10F Stomata Leaf Peel Count Aim: * To examine the stomata on the upper and lower epidermis of a leaf. * To investigate and find out which side has more and why. Prediction: I predict that there will be more stomata on the underside of the leaf (the lower epidermis) than on the upper epidermis because that way the maximum amount of sunlight can enter the leaf without many stomata blocking the way. Also, a lower number of stomata would increase the surface area and therefore increase the amount of area available for light to hit. ...read more.

Middle

4. Paint on a second layer when the first on is completely dry. 5. While waiting for the nail varnish to dry, take out a microscope and set it up (make sure that the light is dim) 6. Using forceps, peel of a strip of nail varnish from the upper epidermis. 7. Set it up on a slide and put it under the microscope. 8. Count the number of stomata you see when it is in focus (use a stronger intensity so that you don't have to count as many stomata and your results will be more accurate) ...read more.

Conclusion

Carbon dioxide diffuses in for photosynthesis, oxygen (one of the results of photosynthesis) diffuses out, and water vapour diffuses out. There were more stomata on the bottom of the leaf because on the top of the leaf sunlight has to enter. A lot stomata would block the maximum amount of sunlight from entering because it would lower the surface area of the leaf (a lower number of stomata would increase the area available for sunlight to hit the leaf). Also, if there were more holes on the top of the leaf, more water would be lost by evaporation because they are facing the sun, instead of being under the leaf in the shade. ...read more.

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