Biology 215 Labs: Biological Insecticides

Bio 215 Home Lab Schedule Koch's Postulates

In this laboratory, you will investigate Koch's posulates, or proving how a disease is transmitted. You will also learn about an alternative to chemical pesticides such as DDT. In addition, you will examine the anatomy of an insect, the grasshopper. See below for a guide to your dissection. Answer the questions below and in the "For further thought..." section to better prepare you for the laboratory session.

Exernal anatomy of the grasshopper.

Internal Anatomy of the grasshopper.

For further thought...

1. Explain how chemical pesticides sprayed on an agricultural crop can harm large birds that eat fish.