260 Education through Nature 



9. Position of Leaves in the Bud 



10. Structures of Leaves 



1. Straight 



2. Folded 



3. Inflexed 



4. Conduplicate 



5. Plicate 



6. Circinate 



7. Convolute 



8. Involute 



9. Re volute 



1. Epidermis 



2. Network of veins 



3. Green mesophyl 



I. Adaptations of Leaves 

 to Light 



ADAPTATIONS OF LEAVES. 



1. Flat and expanded surface 



2. Cut, divided, or cleft to let in light 



3. Separated on the stem 



4. Petiole lengthened or shortened 



5. Rolled up so as to expose little surface 



6. Turning flat surface or edge to light 



7. Placed uppermost on the stem 



8. Bending towards the light 



9. Green color chlorophyl 



10. Palisade arrangement of cells on ex- 

 posed surface 



2. Adaptations of Leaves 

 to Water 



1. Hairy 



2. Waxy 



3. Covered with cuticle 



4. Large and broad for floating 



5. Drooping 



6. Pitcher-shaped 



7. Prostrate position on the ground 



8. Upright position on stem 



3. Adaptation of Leaves for Protec- 

 tion'from Other Plants 



' i. Prickly 



2. Hairy 



3. Changed into tendrils 



4. Thick, spherical, and fleshy 

 1 5. Converted into spines 



