the small openings on the undersides of most leaves through which oxygen and carbon dioxide can move
green pigment in plants that absorbs light energy used to carry out photosynthesis
process by which plants and some other organisms use light energy to convert water and carbon dioxide into oxygen and high-energy carbohydrates such as sugars and starches
the process that releases energy by breaking down glucose and other food molecules in the presence of oxygen
A growth response of a plant toward or away from a stimulus
the plant hormone that speeds up the rate of growth of plant cells
response of plants to periods of light and darkness
Plant that generally requires short nights-- less that 10-12 hours of darkness to begin the flowering process.
Plant that generally requires long nights-- 12 or more hours of darkness to begin the flowering process.
A plant with a flowering cycle that is not sensitive to periods of light and dark.