370 likes | 705 Views
Plant Physiology. What happens inside the plant!. Plant Taxonomy. Monocots Dicots. The Three Areas We Will Look At. 1. The plant parts 2. Metabolic processes 3. Growth. Leaf Structure & Function. Cross Section of Pine Needle. Bud Types. Tree Trunk Components. Stomates.
E N D
Plant Physiology What happens inside the plant!
Plant Taxonomy Monocots Dicots
The Three Areas We Will Look At 1. The plant parts 2. Metabolic processes 3. Growth
Photosynthesis • Requirements for P.S. • -high light intensity • -water • -CO2 • Products of P.S. - food (glucose) - oxygen
Photosynthesis cont. • Occurs only in light
Purpose of Photosynthesis To convert sunlight, water & nutrients into stored energy and carbohydrates.
Respiration Requirements of Respiration -food (sugars, carbo., proteins, fats) -oxygen
Products of Respiration -energy(ATP) -water -CO2 Occurs in light and dark Respiration
Is the evaporative loss of water from plants It is the super-highway for nutrient transport Cools the plant Occurs primarily on the lower leaf surface Transpiration
Root Absorption • Need O2 for uptake • A decrease in P.S. results in a decrease in root absorption • Absorption requires energy
Light -intensity -quality -duration Temperature Water Environmental Factors
Root Interception Roots intercept nutrients as they grow & expand in the soil.
Mass Flow Moving of large volumes of water, with nutrients in the solution, to plant roots
Diffusion Moving of nutrients from areas of higher concentration to equal concentrations in an area.
Flower Types • Staminate - Contains only stamens (pollen) • Pistillate - Contains only a pistil(s)
Flower Types on Plants • Monoecious - Have male & female flowers, but on same plant. Ex. Corn & Pecans. • Dioecious - Have male & female plants. Ex. Holly
Cross-polliniation • Pollen from on plant is transferred to the stigma of another. • Self-pollination is when the stigma is pollinated by pollen from the same plant.
Acknowledgements Oregon St Dept. of Botany SC Nurseryman Assoc. Plant Physiology