Jan Baptist van Helmont
1st known quantitative experiment in biology
- growing tree experiment
Photosynthesis
process by which plants, algae, and some bacteria transform electromagnetic radiation
(light) into chemical energy
- input: CO2 and H2O
- output: precursors of sugars and O2
Chloroplast
site of photosynthesis
Stroma
inner compartment filled with thick fluid
Thylakoid
interconnected membranous sacs
- site of light reactions
granum
stack of thylakoids
Epidermis
outer covering of leaf
- few/no chloroplasts
- covered in waxy cuticle
- stomata on underside
Mesophyll
internal ground tissue
Vascular Tissue
veins extending through mesophyll carrying
Sap
dissolved sugars from photosynthesis