Why do your plants bend and twist instead of just growing straight?
Ever noticed how a plant on your windowsill leans toward the sunlight, or how roots always seem to find their way downward? Plants can't walk to better spots, but they do have a way to "move",by growing in specific directions based on what's happening around them. These growth moves are called tropisms. When your plant grows toward something (like light), that's a positive tropism. If it grows away (like roots avoiding light), that's a negative tropism.
When your plant changes its growth direction because of something in its environment,like light, gravity, or touch,that's called a tropism. The direction matters: toward the stimulus is positive, away is negative.
Your leaves stretch toward the brightest light for maximum photosynthesis, while roots dig deep to chase water and minerals. Stems and roots often react in opposite ways. For example, stems grow up against gravity (negative geotropism) and toward light (positive phototropism), but roots do the reverse. This way, your plant gets the best of both worlds: leaves in the sun, roots in the soil.
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