This page explains tropisms in plants, which are growth movements influenced by external stimuli. There are positive (toward the stimulus) and negative (away from the stimulus) tropisms, with key type...This page explains tropisms in plants, which are growth movements influenced by external stimuli. There are positive (toward the stimulus) and negative (away from the stimulus) tropisms, with key types being phototropism (light) and gravitropism (gravity). Stems grow towards light (positively phototropic) and away from gravity (negatively gravitropic), while roots do the opposite.
This page discusses how organisms move in response to stimuli through taxes, emphasizing examples such as chemotaxis in E. coli, phototaxis in green algae, and magnetotaxis in bacteria. It highlights ...This page discusses how organisms move in response to stimuli through taxes, emphasizing examples such as chemotaxis in E. coli, phototaxis in green algae, and magnetotaxis in bacteria. It highlights the role of chemokines in immune cell movement and suggests that the magnetotactic behavior of certain bacteria may provide clues about past life on Mars, referencing the discovery of similar magnetite particles in meteorites.
