284 ELEMENTARY SCIENCE 



QUESTIONS 



1. How are insects useful, and how are they harmful? 



2. Describe the body of an insect. 



3. How does an insect breathe? 



4. How does the blood system of a man differ from that of an 



insect ? 



5. Describe the metamorphosis of an insect. 



6. What are the different classes of insects? Give some examples 



of each. 



