204 WILD FLOWER FAMILIES 



4. Study the structure of the flower to deter- 

 mine these points : 



What reward is offered to visiting bees? 



How is this reward advertised? 



How does the structure and position of 

 pistils and stamens bring about cross- 

 pollination by means of the visitors? 



How are ants prevented from getting 

 nectar ? 



How is the washing away of pollen and 

 nectar prevented ? 



(B) Write a little essay for your wild flower booklet. 



with this title : The Bee and the Betony. Follow 

 the outline given under 4 above. 



(C) Illustrate by means of these drawings: Leaf of 



Betony ; Flower-head ; Sectional view from side 

 showing structure and position of pistils and 

 stamens. 



(D) Read pages 85 to 90 in Blossom Hosts and Insect 



Guests. 



Butter-and-Eggs : 



(A) I. Where does this plant grow? 



2. How does it spread? 



3. What is the color of the leaves? 



4. What insects can you find visiting the flowers ? 



5. How long through the season are the flowers 



to be found? 



6. Study the structure of the flower to determine : 



a. How cross-pollination is brought about. 



b. How self-fertilization is prevented. 



c. How unwelcome guests are excluded. 



(B) Write a little essay for your booklet with this 



title : An Attractive Plant and its Insect Visitors. 



