82 NATURE-STUDY LESSONS. 



10. Which flowers open first, the top or the base 

 flowers of the head ? 



1 1. As each flower opens and matures, what change 

 takes place in its color and in the shape of its little stem ? 



12. In what respects is each flower like that of the pea 

 or bean ? 



13. Which is longer, its calyx or corolla? 



14. How many green teeth has the calyx? 



15. Use a lens to learn the color, number and arrange- 

 ment of the stamens. 



16. (a) Find a matured flower to study the seed-pod. 

 (d) How many seeds are there in each pod ? 



17. Compare the seed-pod in respect to shape with 

 that of the black medic ("blackseed clover"). 



18. If you can find the yellow hop clovers or the 

 rabbit's foot clover compare their foliage, stipules, 

 flowers, stems and roots with these parts of the red or 

 Alsike clover. 



19. (a) Observe a bee visiting clover flowers. 



{i>) State which flowers of the head it selects and 

 why it sips in these and omits the others. 



20. («) Can you taste the nectar, i.e., the material of 



which the bee makes honey, in the clover 



flower ? 

 (d) Which tastes sweeter, the white clover flower 



or the red ? 

 (c) Then why do bees prefer white clover when 



it produces less nectar .'' 



21. (a) Examine the root of red clover. 



(6) Compare it with the root of the grasses among 



which it grows. 

 (c) Which descends farther into the ground ? 



