THE TEACHING BOTANIST 



apply to other stages of growth as well. A study of the storage 

 of nourishment in seeds is important, a subject well treated in 

 Bergen. 



III. The Locomotion of Seeds 



8. The seed is the locomotive stage of the plant. 



Seeds have no power of independent movement, 

 and hence can secure locomotion only through 

 being carried by some of the moving agencies of 

 nature. To fit them thus to be carried, adap- 

 tively constructed appendages have been de- 

 veloped. 



a. What are the different moving agencies of 



nature which can carry seeds ? 



b. Study the ten seeds supplied to you. In 



each case find out and record : 



(1) What part produces the special 



appendages ? 



(2) To what moving agency are the 



appendages probably adapted ? 



(3) What accessory features of shape, 



weight, etc., to aid the appen- 

 dages, are found in the seed 

 itself ? 

 Make only outline sketches fully labelled. 



9. Write a concise essay (of not more than two hun- 



dred and fifty words) upon the principles, deduced 





 from your laboratory work, from the lectures, and 



