44 INTERRELATIONS OF PLANTS AND ANIMALS 



tils ever separated by being on different plants? Give examples. 

 Explain. 



Conclusion. Using a form like that on page 43, tabulate the 

 various ways in which pollination is brought about. 



PROBLEM QUESTIONS 



1. What relation might insects and plants have to each other? 

 Is this relation always a useful one? 



2. How could you tell an insect from other animals ? 



3. How could you tell a bee, butterfly, bug, grasshopper, beetle ? 



4. What is meant by metamorphosis? 



5. Of what use might metamorphosis be to an insect ? 



6. Which is the most beneficial stage of the metamorphosis of a 

 moth or a butterfly? The most harmful stage? Why? 



7. Of what use to a flower are its sepals, petals, stamens, pistil ? 



8. What parts could a flower do without ? Why ? 



9. What do insects get from flowers? What do they do with 

 what they get ? 



10. Is pollination intended by an insect ? 



1 1 . What do we mean by an adaptation ? Illustrate from a flower. 



12. What do we mean by a mutual adaptation ? Illustrate from 

 a flower and an insect. 



13. What adaptations are found in flowers to prevent self- 

 pollination? Give examples. 



14. What agents other than insects might transfer pollen? 



15. Compare with your own environment the environment 

 which you have found animals and plants to have in the park. 

 How are the two environments alike and how do they differ ? 



16. What constitutes an artificial environment? A natural 

 environment ? 



17. What are some uses to you of a city park? Do not look 

 in your book for an answer. 



REFERENCE BOOKS 



Hunter, Civic Biology, Chap. III. American Book Company. 

 Hunter, Elements of Biology, Chap. IV. American Book Company. 

 Hunter, Essentials of Biology, Chap. IV. American Book Company. 

 Andrews, Botany All the Year Round, pp. 222-236. American Book Company. 



