INSECTS 



flowers. Are the brightest colors on upper or under 

 side of wings of butterfly ? Why ? (Think of the colors 

 in a flower.) Why is it better for moths to hold their 

 wings flat out when at rest ? Where are moths during 

 the day? How can you test whether the color of the 

 wings is %iven by the scales ? 



State how moths and butterflies differ in respect to : 

 body, wings, feelers, habits ; abundance of scales. 



Insects and Flowers. — W T e are indebted to insects for 

 the bright colors and sweet honey of flowers. Flowers 

 need insects to carry their pollen to other flowers, as cross- 

 fertilization produces the best seeds. The insects need the 

 nectar of the flowers for food, and the bright colors and 

 sweet odors are the advertisements of the flowers to at- 

 tract insects. There were no flowers in the world before 

 flying insects were developed. Moths, butterflies, and 

 bees carry most pollen (see Plant Biology, Chap. VI). 



Comparative Study. — Make a table like this, occupying entire page 

 of notebook, leaving no margins, and fill in accurately : — 



