ISA - Arborist Certification Test - Chapter 10 with Complete Solutions

stressed - ANSWER If a tree is not well suited for the site in chich it has been planted, it may become _______, predisposing it to other problems. roots - ANSWER A common mistake in diagnosis is to carefully examine the above ground portion of the tree, while ignoring the ______. abiotic - ANSWER Leaf scorch, girdling roots, and mineral deficiencies are examples of ______ disorders egg laying - ANSWER Insect damage to trees is usually the result of feeding or _____ ______. vectors - ANSWER Insects that carry plant pathogens are said to be ______. nematodes - ANSWER Microscopic worms that sometimes feed on trees and may carry diseases are called ______. bacterium - ANSWER Fire blight is and example of a disease caused by a ______. allelopathy - ANSWER _______ is the chemical inhibition of growth and development of one plant by another. herbicide - ANSWER Curling and cupping of the foliage, and parallel venation, are common symptoms of ______ damage. witch's broom - ANSWER abnormal growth of multiple secondary shoots vector - ANSWER carrier of pathogens canker - ANSWER localized dead tissue, often shrunken and discolored gall - ANSWER swollen plant tissue often insect or mite induced stunting - ANSWER reduced growth stress - ANSWER may predispose a plant to other problems pathogen - ANSWER causal agent of disease leaf spot - ANSWER dead spots on the foliage