40 LIFE DEPENDS ON ADAPTATIONS 



strations you have seen. These big ideas we call generalizations. 

 For this unit they are as follows : 



1. Adaptations are fitnesses for living in a given environment. 



2. There are adaptive acts as well as adaptive structures. 



3. Life depends upon adaptations. 



4. Man shows many adaptations. 



5. Man is the only living thing that can adapt the environment 

 to himself. 



Before making your review summary, test your knowledge of 

 the facts of the unit by checking over the text so as to be sure you 

 know the facts underlying the generalizations. Then, using the 

 generalizations, the material in the text and everything you have 

 read, seen, or done yourself, make a summary outline for your 

 notebook. This outline you may use when you make a recitation. 



TEST ON FUNDAMENTAL CONCEPTS 



Make two vertical columns in your workbook. Head one CORRECT 

 and the other INCORRECT. Under the first place the numbers of all state- 

 ments you believe to be correct. Under the second place all the numbers 

 of all statements you believe to be incorrect. Your grade = right answer 

 X4. 



I. Adaptations: (1) make it possible for plants or animals to 

 exist under certain conditions favorable to the adaptation ; 

 (2) make it possible for a plant or animal to live under any condi- 

 tion; (3) are adjustments; (4) are never found in the young but 

 appear late in life ; (5) are always structures. 



II. Adaptations make it possible: (6) to obtain food; (7) to 

 protect the offspring successfully ; (8) to obtain money and fame ; 

 (9) to escape from one's enemies; (10) to adjust oneself to his 

 surroundings. 



III. Some adaptations for life in the water are: (11) claws; 

 (12) gills; (13) fins; (14) slimy body; (15) heavy bones. 



IV. Some adaptations for life in a hot, dry climate are : (16) elec- 

 tric fans; (17) spines instead of leaves; (18) in animals, thick 

 hair to keep off the heat ; (19) in plants, a thin body covering which 

 easily allows the escape of heat; (20) sweating, which gets heat 

 out of the body. 



V. Man can control or change his environment: (21) by means 

 of clothes; (22) because he can solve problems and thus adapt 

 the environment to his needs ; (23) through scientific discoveries ; 

 (24) because he has a nervous system ; (25) because he is a " bundle 

 of adaptations." 



