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NATURE STUDY MADE EASY 



II. Soak beans over night. Give one 

 to each pupil with pin for dissection. 

 What is bean ? color ? shape ? size ? 



Find scar where fastened to pod. Is 

 it rough or smooth? hard or soft? Find 

 little hole where pollen tube entered. 



Put pin in. With pin carefully raise 

 skin. Is it thin or tough? How many 

 seed leaves? Are they thick or thin? 

 Why? 



Do not injure baby plant. How many 

 parts has it? radicle or root, plumule or 

 stem ? Plant it. Watch it. 



III. Radicle goes down. Plumule 

 grows up. Why two leaves? Plant 

 (a) in earth ; (&) in cotton ; (c) in sand. 

 Compare growth. 



Compare bean with wheat seed. 



Wheat has only one cotyledon. 



Plant wheat and compare growth. 



Most tropical plants have only one 

 seed leaf. 



APPLICATION 



What is a seed? 



Describe a bean seed. 



How does a bean germinate and grow ? 



Draw a picture of a bean seed. 



Draw a bean seedling. 



II. PARTS 



Scar by which it was at- 

 tached to pod. 



Micropyle, or gate, en- 

 trance for pollen. 



Cotyledons, or seed leaves 

 with thick skin. 



Baby plant with plumule 

 and radicle. 



III. GERMI- 

 NATION 



Place in f heat ; 



favorable \ moisture ; 



condition [air; 

 Bean swells and bursts 



outer coat ; 

 Plumule goes up into air 



to hold leaves; 

 Radicle goes down into 



ground to seek food for 



young plant. 

 Two tiny green leaves 



appear and plant begins 



independent growth. 



