TESTS 53 



II. Both plants and animals (6) are made up of cells ; (7) react to 

 stimuli ; (8) have the same life processes ; sensation, motion, respira- 

 tion, nutrition, excretion, and reproduction ; (9) make food ; (10) re- 

 lease energy from their food in order to do work. 



III. Cells (11) are made of living material ; (12) are always green in 

 color; (13) all contain nuclei; (14) in both plants and animals are 

 exactly alike ; (15) are units of building material in living things. 



IV. Growth in organisms takes place (16) by increase in the size of 

 the cells ; (17) by increase in the number of the cells ; (18) by increase 

 in the number of chromosomes in the cells ; (19) when cells composing 

 them divide; (20) when the living matter takes in more food. 



V. A living thing (21) is adapted to live in a given environment when 

 it has structures which fit it for that life ; (22) is adapted to do a given 

 piece of work when it has structures that fit it for that work ; (23) may 

 adapt itself to any environment ; (24) reacts to stimuli ; (25) will die 

 if taken from its original environment. 



Achievement Test 



1. How do plants or animals react to stimuli? 



2. How would you perform at least one experiment to show tropism ? 



3. How can you distinguish between living and non-living things? 



4. Have you seen a cell? Name the parts and uses of each part. 



5. How can you make a classification of adaptations and show 

 clearly just what you mean by this classification? 



Practical Problems 



1. Show specifically how man has made use of the fact that certain 

 plants or animals react to the stimulus of light. 



2. Prove how some tropism is of value to a plant ; to an animal. 



3. Explain fully how your leg is adapted to its uses. 



Useful References 



Burlingame and others, General Biology. (Henry Holt & Co. 1928.) 

 Caldwell, Skinner, Tietz, Biological Foundations of Education. (Ginn 



&Co. 1931.) 

 Eikenberry and Waldron, Educational Biology. (Ginn & Co. 1930.) 

 Loeb, Forced Movements, Tropisms and Animal Conduct. (J. B. 



Lippincott Co. 1918.) 

 Plunkett, Outlines of Modern Biology. (Henry Holt & Co. 1930.) 

 Shumway, General Biology. (John Wiley & Sons. 1931.) 

 Thomson, The Outline of Science. (G. P. Putnam's Sons. 1922.) 

 Transeau, General Botany. (World Book Company. 1923.) 

 Wiggam, Fruit of the Family Tree. (Bobbs-Merrill Co. 1924.) 

 h. bio — 5 



