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Terms 10-19

Term review for second major test

TermDefinition
Vascular Plants a plant having a specialized conducting system that includes xylem and phloem
Combustible able to catch fire and burn easily
Acute Toxicity can be defined as the adverse effects resulting from a single exposure to a chemical substance or repeated exposures within a short period of time (less than 24 hours), and which also occur within a short period of time following exposure.
Asphyxiation to cause to die or lose consciousness by impairing normal breathing, as by gas or other noxious agents; choke; suffocate; smother
Chronic Toxicity a property of a substance that has toxic effects on a living organism, when that organism is exposed to the substance continuously or repeatedly
Fungicide a chemical that destroys fungus
Herbicide a substance that is toxic to plants and is used to destroy unwanted vegetation
Insecticide a substance used for killing insects
pre-emergent applied before the emergence of a plant from the soil
Post-emergent used to kill weeds after they have germinated
Reentry the minimum amount of time that must pass between the time a pesticide was applied to an area or crop and the time that people can go into that area without protective clothing and equipment
Selective Pesticide kills only certain kinds of plants or animals Example:2, 4-D used for lawn weed control, kills broadleaved plants but does not harm grass
Toxicity The ability of a poison to produce adverse effects
Greenhouse a glass, polycarbonate, or plastic building in which plants are grown that need protection from cold weather
Solar Heating harnessing the light and warmth of the sun, trapping the heat inside the structure to create an environment more conducive to plant growth than the outside
Auxins a plant hormone that causes the elongation of cells in shoots and is involved in regulating plant growth
Cytokinins A plant hormone that promotes cell division
Ethylene a gaseous hormone and it accelerates fruit ripening
Gibberellins a group of plant hormones that stimulate stem elongation, germination, and flowering
Humidity amount of water vapor in the atmosphere
Created by: dale33