The Golden Rule for Flowers 195 



flowers are, however, comparatively very few; and as their 

 colors are generally deep yellow, orange, brown-red, or 

 brown, we may conclude that they are not frequented by 

 such high-class insects as bees. 



QUESTIONS FOR REVIEW 



1. What classes of plants are wind fertilized? 



2. What usually are the characteristics of their blossoms? 

 Illustrate. 



3. Give some peculiarities of the palm. 



4. What is the true fruit of a plant? Is it always edible. 

 Give illustrations. 



5. Does the ovary ever develop without pollen? Illustrate. 



6. Give instances of the use of water in fertilizadon. 



7. Describe the way in which flowers are fertilized by insects. 



8. What parts of the strawberry and of the apple form 

 what we call the fruit? 



9. What peculiarity has the campanula-blossom? 



10. Describe the blossom of the primrose. What fact does 

 it illustrate? 



11. Describe the effects of colors in attracting different 

 insects. 



