Pollen Lab - Materials Science Institute

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IV. OBSERVATIONS: Draw 1 pollen grain as instructed in class. Remember to include your scale bar. SEM _______X Mag Lily Pollen Grain SEM _______X Mag Corn Pollen Grain V. CONCLUSIONS: A. Which pollen type did you predict to be most allergenic? SEM _______X Mag Ragweed Pollen Grain 2
B. Briefly describe 2 similarities and 2 differences between the different pollen types. a. Similarity #1= b. Similarity #2= c. Difference #1= d. Difference #2= C. Which type of pollen had the smallest grain? D. Which type of pollen grain would be easiest to disperse in the air? Explain. E. Which type of pollen would be most likely to stick on to the respiratory epithelium of the nose? Explain. F. Explain the structural features of the ragweed pollen that help to make it one of the most allergenic pollen grains in the environment. G. Briefly describe another experiment that could help you prove which structural feature was most important for the allergenicity of ragweed pollen. H. Briefly explain the cascade of events in the allergenic response induced by an allergen such as ragweed pollen. 3
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Page 5: SEM 1216X Mag Corn pollen Size=~80

Pollen Lab - Materials Science Institute

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