THE BEAN FAMILY. 277 



16. Sketch part of a Gorse plant, marking clearly which structures 

 are leaves and which are stems. How are these organs distinguished ? 



17. Point out the structural features by which a Gorse plant is 

 adapted to its usual habitat. What other plants are often found 

 growing along with Gorse ? 



18. Describe observations and experiments which show that the 

 peculiar features of the Gorse plant are adaptations for enduring 

 drought. 



19. Describe the seedling of Gorse, and discuss its structure and its 

 relation to the structure of the mature plant. 



20. Describe the structure of the Gorse flower. What happens 

 when a bee alights on the flower ? How often can a Gorse flower be 

 visited by bees ? 



21. Describe the appearance of a Laburnum tree (1) in winter, (2) in 

 spring, (3) in late summer or in autumn. 



22. Describe the inflorescence of Laburnum, and compare it with 

 the inflorescences of the other plants of the Bean family which you 

 have studied. 



23. In what respect does the nutrition of plants of the Bean family 

 differ from that of most flowering-plants? 



24. Name eight papilionaceous flowers, of which six must be British. 

 Describe carefully, from observations you have made, the pollination 

 of any one of these and draw its floral diagram. 



