WebFeb 28, 2024 · Galls are abnormal swellings of plant tissue, usually on leaves and twigs. Insects, mites, bacteria, fungi, or nematodes may cause them. Chemicals produced by the egg-laying and feeding activities cause most insect and mite galls. The chemicals cause the affected plant cells to swell. Aphids, midges, wasps, psyllids, beetles, and eriophyid ... WebNov 5, 2024 · The most general hypothesis suggests that gall formation is triggered by the action of chemical substances secreted by the gall inducer, including plant growth regulators such as auxins ...
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WebAug 20, 2024 · Gallstones are hardened deposits of digestive fluid that can form in your gallbladder. Your gallbladder is a small, pear-shaped organ on the right side of your … Webinduce the most structurally complex and diverse galls known of any gall-inducing group (Dreger-Jau¡ret & Shorthouse 1992; Rohfritsh 1992). Cynipid gall structures are characteristic of the gall inducer, rather than of the host-plant (Ambrus 1974; Rohfritsch 1992), and result from cynipid traits expressed at two stages in the wasp’s life cycle. cheapest esim phone
Ent 202 - Mod 13 Flashcards Quizlet
Insect galls are the highly distinctive plant structures formed by some herbivorous insects as their own microhabitats. They are plant tissue which is controlled by the insect. Galls act as both the habitat and food source for the maker of the gall. The interior of a gall can contain edible nutritious starch and other tissues. Some galls act as "physiologic sinks", concentrating resources i… WebGalls also contain large amounts of tannic acid, which is widely used in the manufacture of medicines, insecticides, and permanent inks. The Aleppo oak gall of Asia Minor, produced by a cynipid wasp, contains about 65 percent tannic acid. For centuries the best permanent inks were made from these galls. WebB. no gall to form C. a large gall D. a bird to eat the egg 2) Which statement from the passage best describes how galls are formed? A. “Once a gall has grown, the insects have a safe place to live and eat, or do they?” B. “These bumps are called galls.” C. “These special chemicals cause the plant to bubble up and form a gall.” cheapest eso gold