SURVEY QUESTIONS 



Do you think it is true that plants and animals depend on each other? 

 Can you give any examples to prove this? Can you distinguish between 

 full-grown and baby insects ? Do you know why insects are numerous ? 

 Why do insects visit flowers ? Do you know why seeds are formed ? 



UNIT III 



HOW ARE ANIMALS AND PLANTS MUTUALLY 

 DEPENDENT? 



Preview. Anyone who has been in the field cannot help thinking 

 that insects have something to do with flowers and green plants. 

 Grasshoppers eat the green leaves, beetles crawl over the golden- 

 rods, butterflies light on flowers or deposit their eggs on some 

 plant that their young will use as food. Almost everywhere honey- 

 bees can be seen busily at work among the flowers. What are they 

 all doing ? Is it something that we can discover for ourselves ? 



If we were to take a single tree for observation, we might find 

 birds nesting in the branches ; perhaps a squirrel or two has a home 

 there : insects of many kinds may be found on its leaves, or under 



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