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Fascinating Facts About 5 Common Household Allergens


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Pollens
Many people are affected by seasonal allergies.
Many people are affected by seasonal allergies.
iStockphoto/Thinkstock

Pollen carries the machinery to create the male gamete, or sperm, necessary for the plant's reproductive cycle. The hard protein casing that causes so much misery protects the reproductive cells during their voyage from the male part of the plant (the anther) to the female part (the stigma), usually of a neighboring plant.

The evolution of pollen allowed plants to procreate without standing water, ultimately delighting us with blossoms and awing us with forests of trees.


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