Definitions [4]
Define
Photosynthesis
Photosynthesis: The process by which plant leaf prepares or synthesizes food from water and carbon dioxide in the presence of chlorophyll and sunlight is called photosynthesis.
Define venation.
Venation: Arrangement of a pattern of veins in a lamina is called venation.
Define
Tranpiration
Tranpiration: This is the process by which there is a loss of water in the form of vapour by evaporation from the surface of leaves. It has a cooling effect, it causes the suction force to make roots absorb more water with mineral ions.
Define Thorns.
Leaves of some plants become wholly or partially modified into sharply pointed structures called thorns or spines.
