Descripción
We all know that plants can’t walk from place to place, but they do move their stems, leaves, and roots in response to their environment. It just happens too slowly for us to see. These plant movements are called tropisms. In a positive tropism, the plant moves towards the stimulus. One familiar example is positive phototropism, in which a plant moves towards sunlight. Time lapse photography allows us to appreciate the tropisms of plants. This video shows the positive phototropism of sprouting snow peas. Note how the pea sprouts move back and forth with each day.Plants can also move away from stimulus; this is called a negative tropism. Some plants move away from bright light, this tropism is called negative phototropism
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Auteurs
Auteur Beth Touchette
Catégories Ficha para imprimir, 8-10 años, Experimento/Práctica, Science Fair - Education, Biología, Inglés add
Mots clés add
Date de publication 27 / 08 / 2020
Licence La licence originale de la ressource est respectée.
Que se passe t’il ? lancer session
Positive and Negative Geotropism
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