Flowering plants: Nutrition and transport| Chapter 25

Nutrients for plants include

carbon dioxide and water

Nutrition + Soil

NPK (nitrogen, phosphorous, and potassium)

Soil

made up of clay, silt, and sand, decaying organic material, living organisms, air, and water

Humus

decaying organic material

Cation exchange

process by which hydrogen and other positive ion exchange places with positively charged minerals

Cation exchange capacity

availability of negative charge sites which can bind positive cations

Soil profile

* leaf/ plant life
* topsoil
* subsoil
* bedrock

Soil erosion

occurs when water or wind carry soil to a new location

Mineral uptake

through mycorrhizal association between fungi and plant roots

* THE ROOT PROVIDES FUNGUS WITH SUGAR AND AMINO ACID

Mineral uptake 2

* through rhizobium bacteria
* through parasitic and carnivorous plants

Cohesion tension

how water gets moved through the plant

Cohesion

the tendency of water molecules to cling together

Adhesion

the tendency of water molecules to cling to others

Transpiration

continuous water moves passively upward. Evaporation helps this

Movement of water process 1

move water to soil through roots - osmosis

Movement of water process 2

cohesion and adhesion forms water column, pulled up the stem

Movement of water process 3

pulled up through evaporation process in leaves, then transpiration occurs

Movement of sugar

1. sugar is made in the leaves
2. pressure flow moving from source (leaves) to sink (final destination, soil, stem)