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-ECGS : 



(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. 



