process by which plants capture energy and make complex molecules (carbohydrates) in a series of...
TRANSCRIPT
PHOTOSYNTHESIS
Photosynthesis
Process by which plants capture energy and make complex molecules (carbohydrates) in a series of linked chemical reactions.
Energy is required for life processes such as: growth & development, movement, transport
Autotrophs – organisms that produce food from sunlight.
Heterotrophs –consume other organisms for energy. Primary consumers Secondary
consumers Secondary
consumers
Photosynthesis occurs in the chloroplasts of plants.
Absorbs light energy It reflects green wavelengths of light (this
is why plants are green)
Plant Structure
Chloroplast Granum Thylakoid Pigments
Pigments
Chlorophyll Carotenoids
History
Aristotle - thought that plants derived their food from the soil.
History
Nicolas de Saussure – found that plants require carbon dioxide and water to grow
History
Jan Ingenhousz – found that plants produce oxygen when exposed to light.
History
Joseph Priestley – performed the bell jar & candle experiment. Found that plants give off oxygen
History
Jean Senebier - found that plants require carbon dioxide and light for photosynthesis
History
Jan van Helment – found a plant’s mass is mostly water.
History
John Mayer – discovered that plants convert light energy into chemical energy (carbohydrates)