28 THE NATURE AND NEEDS OF LIVING MATTER 



a. General Study of a Plant 



Observations. 1. Find four different parts to the plant. 

 What are they ? 



2. What is the greatest difference between root and stem? 

 Can you find joints in the roots ? 



3. Are the leaves arranged on the stem in a regular or 

 irregular fashion? 



4. Do you find any parts of the flower that appear like 

 modified (changed) leaves ? 



5. How many circles of parts can be found in the flower ? 

 How many parts in a circle ? 



Conclusions. 1. What do you think is one of the purposes 

 (functions) of roots ? Reasons ? 



2. What is one of the evident functions of the stem ? 



3. How are the leaves arranged so as to get the most sun- 

 light ? 



4. Is there any relation between parts exposed to sunlight 

 and the green coloring matter (chlorophyll) ? 



Note. Roots, stems, and leaves are known as vegetative 

 organs, as they are necessary to the life and growth of most 

 individual plants. 



5. What is produced by the flowers of apple trees ? What 

 is contained within the core of the apple ? Then what do 

 you think is the function of flowers? Why are they of espe- 

 cial importance? 



b. General Study of an Animal 



Apparatus. Small glass jars covered with netting to serve 

 as vivaria, or " live boxes," clover or grass, hand lens, bristles. 



1. ACTIVITIES 



Method. Place two or three live grasshoppers 1 in a viva- 

 rium containing some grass or clover, and observe them 

 carefully for a few minutes. 



1 A live butterfly or any other living insect will do just as well. 



