Photosynthesis

Carbon Cycle

Light

Light Spectrum

Useful Light

Chloroplasts

PhotosynthesisLight Reactions (Thylakoids)Calvin Cycle (Stroma)

Overview

Overview

Overview

Oxygen?

Photosystem

Photosystem

Light Reaction

Chemiosmosis

Calvin Cycle

Photorespiration

C4 and CAM PlantsC3 C4 CAM

Photoresp High Low Low

Enzyme Rubisco Pep carboxylase

Pep carboxylase

Sugar 3-PGA OAA OAA

Location Mesophyll Bundle Sheath

Mesophyll

Stoma (d/n) Open/close Open/close Close/open

Examples Most Sugarcane, corn, grass

Pineapple, cacti, succulents

Greenhouse Effect

Global Warming

Plant StructuresRoots

Absorb Water, Minerals, NutrientsRoot hairs

Plant StructuresStems

Xylem – Move water up a plantPhloem – Move food down a plant

Dendrochronology

Plant StructuresLeaves

Guard Cells – Open and Close for gas exchange and water movementStomata – Opening

Plant StructuresFlowers

Plant StructuresSeeds