PUOBLEAl 18 



47 



what happens? What would one use of llic roots he? W liat 

 holds a plant iii the ground? In seedhn^s the roots of whifli 

 have been placed in red ink note carefully the appearance of root, 

 stem, and leaves. Note that the rod fluid extends into the leaves. 

 How did it get there? What is one use of the stem to (he plant? 



Examine a piece of sugar cane, a stem. Taste it. What does 

 it contain? What might another use of stems he? 



Examine leaves which are in a sunny window. How arc (hey 

 placed with reference to the light? Later we will find tha( green 

 leaves make food for the plant when in the sunligiit. 



We have seen flowers, and found that in time they form fruits. 

 Fruits in turn hold the 

 seeds which give rise 

 to new plants. 



Conclusion. — 1. 

 Write a short compo- 

 sition on the uses of 

 all of its parts to a 

 green plant. 



2. Fill in a table hke 

 the accompanying. 



Problem IS: To study the needs and use.^ of fhr jinrf'^ of a 

 living animal. 



Method. — Study your pet cat or dog. Make a list of all (he 

 things that your pet requires in order to live. Classify tlu^ intake 

 of the pet under the headings, Food, Water, Air, etc. 



What parts of the body have to do with taking in food ".' Water? 

 Air? When a structure has a work to do, we call (ha( work its 

 function. What other functions has your pet besiik\s tho«' ahi-ady 

 mentioned? (Your teacher will helj:) you here.) 



Conclusion. — What are the needs and what arc th(» functions 

 of a living animal? How do you think they compare wi(h those 

 of a plant? 



STUDY OF COMPOUXD MirilOSCOPE 

 1. NOTE. — The microscope, an instrument for makinn .•^n.all ohjort,s ai.i>oar 

 larger, comprises two parts: the stand (A. B. C) an<l the lon.sea (F. G). 



