Wisconsin Pesticide Applicator Training Manual Section 1 Solved 100% Correct

list the general kinds of damage inset pests can cause - ANSWER-chew on seeds, roots, leaves, stems, and fruits; tunnel in roots, stems, and leaves; such plant juices from roots, stems, leaves, flowers, and fruits; promote gall formation and other malformations on plants; inject toxins into plants while feeding; transmit diseases to plants while feeding; create a nuisance for people describe the structural features of insects - ANSWER-insects have three regions: head, thorax, abdomen. three pairs of legs attached to the thorax explain how to distinguish insects from other arthropods - ANSWER-spiders, mites, etc. have two body regions: a fused head and thorax, and abdomen; four pairs of legs attached to head/thorax region; no wings; no antennae; has an exoskeleton contrast the difference between simple and complete metamorphosis - ANSWER-simple: three stages: egg, nymph, and adult. must molt because exoskeleton cannot enlarge. complete: four stages: egg, larva, pupa (cocoon), and adult explain how temperature and humidity affect insect development - ANSWER-the temperature threshold that causes death of an insect may be raised or lowered by changes in humidity list the advantages and disadvantages of using insecticides - ANSWER-advantages: effective against thousands of economically damaging pests, act quickly, usually available. disadvantages: eliminate beneficial insects, thus allowing the target organism to rebound quickly, repeatedly exposing a pest population to the selection pressure of insecticides can lead to resistance, yearly dependence can add cost to maintenance, there is a potential for drift, residues, and damage explain what determines whether a given plant is a weed - ANSWER-any unwanted plants list the two main goals of weed management - ANSWER-minimize weed competition and limit the weed's reproduction so you can still manage the weed population in future years describe ways that weeds can pose problems in turf and landscapes - ANSWER-interfere with management practices, produce chemical inhibitors that directly retard growth of desirable plants, create a poor impression on customers, interfere with pesticide applications, support insect pests and plant diseases or provide cover for rodents, are poisonous, allergenic, or irritating to people or pets