Category E: Turf and Ornamentals Minnesota Pesticide Exam (Terms to Know) Exam Questions with Correct Answers

Abiotic Correct Answer related to factors or things that are separate and independent from living things; nonliving (air pollutants, wind, water, temperature) Abiotic stresses Correct Answer Caused by unfavorable growing conditions (drought, wind, flood) Absorption Correct Answer The movement of pesticides into plants and, to a lesser degree, soil microorganisms. Adjuvant/Additive Correct Answer Substance added to a pesticide to improve its effectiveness, usability or safety such as penetrants, spreader-stickers, storage stabilizers and wetting agents. Adventitious roots Correct Answer roots produced by certain stems if roots are separated from the plant or if injury occurs. Adsorption Correct Answer Adhesion of an ultra thin layer of molecules to the surface of particles. The molecules do not penetrate the surface. Aesthetic threshold Correct Answer pest population density level when pest management methods must be applied to prevent reaching unacceptable levels of aesthetic damage to a plant or landscape Alleopathy Correct Answer chemical inhibition of one plant by another Annual Correct Answer A plant that completes its life cycle in one year Aquatic life Correct Answer Fish, invertebrates and others that live in water. Bacteria/Bacterium Correct Answer Single celled organisms, some of which cause disease in plants and animals Bactericide Correct Answer A chemical used to control bacteria. Backflow Correct Answer Reverse flow of a liquid (such as a pesticide) into a water supply. Backflow can occur during chemigation or when filling tanks. Beneficial insects Correct Answer Insects that are essential for pollination of plants or play a role in plant health care. Biennial Correct Answer A plant that requires two growing seasons to complete its life cycle