CONTENTS 
I Plants without Seeds ii 
What is the green scum on water? What are the 
smallest plants? What causes bread to mold? 
What is moss? What are ferns? 
II Friends and Enemies 26 
Why are sunflowers yellow? How do plants club 
together? Why do flowers open and close? Why 
do so many red flowers have long narrow tubes? 
How do plants protect themselves? Why do 
burrs stick? 
III Sunlight Factories 45 
How do plants climb? How do plants get their 
food? How can we tell the age of trees? How 
do roots worf(? 
IV Food for Plants 58 
Why is it hard to grow flowers in the shade of a 
tree? What plants are pirates? What plants trap 
their food? Why is clover good for the grass? 
Why do dandelions ^/ 7 / the grass? 
V Storage Rooms 69 
What are vegetables? Why do leaves drop in the 
autumn? What is a seed? What are bulbs? 
Why are there laws against picking wild flowers? 
VI Man-Made Plants 84 
Will oranges grow on lemon trees? How do 
farmers get better apples? How did Burbank 
produce the Shasta Daisy? 
