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Unformatted text preview: Why is the hover fly the only insect that can get nectar from the small iris in South Africa? What is the purpose of the flower's white arrows? Describe the relationship between fig trees and the fig wasp you read about. Describe the relationship between the yucca plant and moth you read about. The Iowa Agriculture Research Service were not always able to use bees to pollinate their plants. They have only used bees since 1970. Before this time, how did they get their plants pollinated? Insect Galls What is an insect gall? Are galls harmful to plants? Why or why not? What is the best way to control an insect gall? Plant defenses Name the two general categories of plant defenses. List three ways plant use chemicals to fight off insect predators. Give an example of an insect that has overcome a plants chemical defenses. List three physical defenses plants employ to ward off insects. Notes:...
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- Spring '08