GREEN PLANTS SOLVE LIFE PROBLEMS 265 



stars minerals water seeds 



reproduce sound food air 



world right blue baby 



food factory holes seed roots 



flowers round green right 



sunlight embryo moon oblong 



make sun left angular 



flat stem yellow red 



Like other living things plants have two big problems for 



existence. They must get (1) and (2) their kind. But 



green plants do not get (3) ; they (4) it. And they make 



not only their own (5) , but also supply the (6) with it. 



To do this they must have (7) coloring matter in their leaves 



and must have a good supply of (8) for the (9) supplies 



the energy to run the (10) In order to get much (11) 



surface exposed to the (12) we find leaves are (13) and 



placed so that usually this surface is at (14) angles to the sun's 



rays. The leaf uses raw materials to make food, part of it, (15) , 



coming up from the soil by way of the (16) and (17) while 



another part, carbon dioxide, gets into the leaf from the (18) 



through its breathing (19) 



Plants solve the problem of continuing their kind by forming 



(20) These are formed in the (21) Each (22) 



contains a tiny (23) or (24) plant which under favorable 



conditions will grow into a new plant. 



STORY TEST 



HARRY TELLS How SEEDS ARE FORMED IN PLANTS 

 Read carefully and critically. List all the errors and suggest corrections. 



Most plants have flowers, although some of them are so small 

 you don't notice them. These flowers form fruits which contain 

 seeds, some just one or two and others a lot. The queer thing is 

 that seeds have in them baby plants and if you plant a seed it 

 always forms a new plant, no matter where it is placed. But only 

 one seed from a fruit will grow, all the others must die. 



These baby plants get into the seeds in a queer way. Flowers 

 have two kinds of things growing in them, surrounded by the 

 colored petals and green sepals. These are the stamens, little 

 knobby things which hold pollen and another thing in the very 

 center called the pistil. This holds the ovaries that later will be- 

 come eggs. When pollen gets on a pistil it grows a tube and then 

 part of the tube unites with the pistil and we have an embryo. 



