EXPERIMENTS AND PRACTICAL WORK 43 



flower the shape of a bell, funnel, &c. (fig. 19), e.g. 

 guava, orange. 



Expt. 45. Sepals. Collect twelve flowers with green 

 sepals and four with coloured sepals, e.g. poinciana, 

 orchids. 



Expt. 46. Number of Petals. Observe and record 

 the number of petals usually found in 



(a) Monocotyledonous plants, e.g. red lily, ginger lily. 



(b) Dicotyledonous plants, e.g. hibiscus, orange. 



Expt. 47. Insect - pollinated Flowers. Examine 

 flowers that are visited by bees (e.g. logwood, genip, 

 lignum-vitae) ; look for the sweet liquid (nectar) and 

 taste it. 



Expt. 48. Pollen found on Stamens of Flowers. 

 Examine four fully opened flowers, and see if you can 

 get pollen from the stamens to adhere to your finger. 



FRUITS 



(See Tropical Readers, Book I, pp. 101-105.) 



Expt. 49. Development of Fruit from Flower. 



(a) Trace the development of a fruit from the flower 

 bud to the mature fruit, and observe which parts of the 

 flower fall off and which enlarge. 



(b) Select a tree on which all stages may be found at 

 the same time, e.g. pomegranate, lime; collect a series 

 and arrange in gradation, putting first the bud, next the 

 flower, &c. 



(c) Select a particular flower on a tree and record, 

 with drawings, the changes that take place until the 

 fruit is ripe. 



Expt. 50. Berries. Examine the following berries, 

 and observe that they all possess an outer skin that en- 



