42 INTERRELATIONS OF PLANTS AND ANIMALS 



4. \\Tiat is meant by a life historj^ ? 



5. How do plants benefit insects ? 



6. How do insects benefit plants ? 



7. "What uses have the parts of a flower? 



8. What kinds of pollination do we find and how is each brought about ? 



9. Name a flower and an insect and work out the interrelations they show. 



10. What agent other than insects carries pollen from one flower to another ? 

 What adaptations do we find in wind-pollinated flowers ? 



11. Can j^ou give any instances of interrelationships between plants and 

 animals which result in the scattering of seeds ? 



12. How has man made use of these interrelations? (Be specific.) What 

 might man do to make more use of such interrelations ? Can you give any 

 examples of "give and take" in human interrelationships? 



Problem and Project References 



Hunter, Laboratory Problems in Civic Biology. American Book Company. 



Coulter, Barnes, and Cowles, A Textbook of Botany, Part II. American Book 

 Company. 



Dana, Plants and Their Children, pages 187, 255. American Book Companj^ 



Darwin, Different Forms of Flowers on Plants of the Same Species. D. Apple- 

 ton and Company. 



Darwin, Fertilization in the Vegetable Kingdom, Chaps. I and II. D. Appleton 

 and Company. 



Darwin, Orchids Fertilized by Insects. D. Appleton and Company. 



Densmore, General Botany. Ginn and Compan3\ 



Dickerson, Moths and Butterflies. Ginn and Company. 



Lubbock, Flowers, Fruits, and Leaves, Part I. The Macmillan Company. 



Lutz, Field Book of Insects. G. P. Putnam's Sons. 



Needham, General Biology, pages 1-50. Comstock Publishing Company. 



Stevens, Introduction to Botany. D. C. Heath and Company. 



Transeau, General Botany. World Book Company. 



