132 WHY DO SEEDS GERMINATE? 



Test on Fundamental Concepts 



In a vertical column under the heading CORRECT write numbers of all statements you 

 believe are true. In another column under INCORRECT write numbers of untrue statements. 

 Your grade = right answers X 4. 



I. An embryo (1) is found in all seeds; (2) is a young plant; 

 (3) will not be formed unless the flower has been pollinated; (4) in 

 the bean consists of the testa and plumule ; (5) is the part of the seed 

 that grows into a young plant. 



II. Among the factors necessary for germinating seeds are: 

 (6) food but no water; (7) light; (8) air, water, heat, and food; 

 (9) a temperature of 100° or over; (10) rich soil and an abundance of 

 water. 



III. Organic foods (11) are found in the cotyledons of the bean; 

 (12) are stored in the cotyledon of the corn; (13) contain carbohy- 

 drates, fats, and proteins; (14) are necessary for the germination of 

 seeds ; (15) can be determined by simple tests. 



IV. The food supply of (16) seeds is found within the embryo of 

 seeds having an endosperm ; (17) the corn seed is found in the cotyle- 

 don; (18) the castor bean is stored in the endosperm; (19) dicoty- 

 ledenous seeds is always stored in the endosperm ; (20) seeds is stored 

 in the form of organic nutrients. 



V. Seeds, in order to use the food contained in them must (21) 

 have it in a soluble condition ; (22) use it as a solid ; (23) digest it first ; 

 (24) change it to such condition as will get into the cells; (25) be 

 exposed to a high temperature. 



Achievement Test 



1. How do you make the tests for the different nutrients found in 

 food? 



2. What ar£ all the experiments on germination? What factors 

 are necessary to insure germination of seeds ? 



3. How can you prove that living things burn or oxidize food in 

 order to release energy ? 



4. How can you make tests to prove that all living things have to 

 digest food before they can use it? 



Practical Problems 



1. Prove what organic nutrients are present in a pea, a grain of 

 corn, a lima bean, and a sunflower seed. Tabulate your results. 



2. Prove that some seed other than corn digests its food supply 

 before using it for growth. 



