The amazing ways plants defend themselves - Valentin Hammoudi
Check out our Patreon page: https://www.patreon.com/teded View full lesson: https://ed.ted.com/lessons/the-amazing-ways-plants-defend-themselves-valentin-hammoudi Plants are constantly under...
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This is a tomato plant, and this is an aphid slowly killing the tomato plant by sucking the juice out of its leaves. The tomato is putting up a fight using both physical and chemical defenses to repel the attacking insects. But that's not all. The tomato is also releasing compounds that signal nearby tomato plants to release their own insect repellent. Plants are constantly under attack. They face threats ranging from microscopic fungi and bacteria, small herbivores, like aphids, caterpillars, and grasshoppers, up to large herbivores, like tortoises, koalas, and elephants. All are looking to devour plants to access the plentiful nutrients and water in their leaves, stems, fruits, and seeds. But plants are ready with a whole series of internal and ...
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This is a tomato plant, and this is an aphid slowly killing the tomato plant by sucking the juice out of its leaves. The tomato is putting up a fight using both physical and chemical defenses to repel the attacking insects. But that's not all. The tomato is also releasing compounds that signal nearby tomato plants to release their own insect repellent. Plants are constantly under attack. They face threats ranging from microscopic fungi and bacteria, small herbivores, like aphids, caterpillars, and grasshoppers, up to large herbivores, like tortoises, koalas, and elephants. All are looking to devour plants to access the plentiful nutrients and water in their leaves, stems, fruits, and seeds. But plants are ready with a whole series of internal and ...
