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If these mutations enable the plant to survive and reproduce even with the damage that the insect causes, then the mutated form will flourish. The mutated plant which can form galls can survive the insects intrusion into its' tissues.
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www.jmu.edu/biology/k12/galls/batessx.htm
www.jmu.edu/biology/k12/galls/batessx.htm
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Gall - Wikipedia, the free encyclopedia
Galls or plant galls are abnormal outgrowths of plant tissues and can be caused by various parasites, from fungi and bacteria, to insects and mites. Galls are often highly organised structures and be...
en.wikipedia.org/wiki/Gall
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Oak apples, honeydew and ambrosia galls, witches brooms, and fasciations-all are types of plant galls, a commonly observed, yet little-understood botanical phenomenon. Often beautiful and bizarre, gal ... Oak apples, honeydew and ambrosia galls, witches' brooms, and fasciations—all are types of plant galls,
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www.ucpress.edu/books/pages/10412.php
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To encourage and co-ordinate the study of plant galls, with particular reference to the British Isles. ... (from British Plant Galls by Margaret Redfern and Peter Shirley) Some well-known types of gall are Oak-apples, Robin's Pincushions and Witches' Brooms.
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www.british-galls.org.uk/
www.british-galls.org.uk/
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GardenLine | Common Saskatchewan Pests | Plant Galls ... Galls may be found on any part of a plant, including buds, stems, flowers, leaves, petioles, and roots. However, usually a specific disease or insect confines itself to one part of a specific plant.
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www.gardenline.usask.ca/pests/galls.html
www.gardenline.usask.ca/pests/galls.html
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Hutchinson encyclopedia article about Plant galls. Plant galls. Information about Plant galls in the Hutchinson encyclopedia. ... Plant galls; plant gatherers; Plant Gene Expression Center; Plant Genetic Engineering Laboratory; Plant Genetic Resources; Plant Genetic Resources Centre; Plant Genetic Resources Conservation...
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encyclopedia.farlex.com/Plant+galls
encyclopedia.farlex.com/Plant+galls
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Young Naturalist, Plants, Plant Galls ... An intriguing world of plant galls is all around us, but many individuals probably have never seen a gall or known what it was if it was noticed. The gall is an example of a plant-animal relationship, but the plant is an unwilling and helpless partner.
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www.tpwd.state.tx.us/publications/nonpwdpubs/young_natu...
www.tpwd.state.tx.us/publications/nonpwdpubs/young_naturalist/plants/plant_galls/
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The small galls on the underside of the hickory leaflet pictured on the left are caused by Phylloxera caryaefallax, a species of plant louse. The globular hickory leaf galls in the center photo are produced by the plant lice Phylloxera caryaeglobuli. The causative agent of the hairy, globular leaf galls (shown...
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www.hsu.edu/content.aspx?id=2151
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Galls are abnormal plant growths caused by various organisms (insects, mites, nematodes, fungi, bacteria, and viruses). This publication will deal with galls caused by the feeding or egg- laying activity of insects and mites.
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www.extension.umn.edu/distribution/horticulture/DG1009....
www.extension.umn.edu/distribution/horticulture/DG1009.html
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