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Tentempié

2011/02/17 Kortabitarte Egiguren, Irati - Elhuyar Zientzia

Zoologia

</p> <p>Un tentempié? No ho <em>facis</em> tan ràpid com les plantes del gènere Utricularia! Investigadors de la Universitat Joseph Fourier i del CNRS de Grenoble han explicat el mecanisme de caça d'aquestes plantes carnívores. Descobreixen que la presa és empassada en menys d'un mil·lisegon.</p>Com es pot observar en el vídeo, aquestes plantes aquàtiques activen un mecanisme de caça res més detectar la presa. És a dir, les seves parets s'expandeixen formant una espècie de parany petit que absorbeix a la presa i, una vegada detectada aquesta, la planta torna a tancar l'entrada del parany. 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