1. the movement of an organism in response to gravity
Usage: biology

Examples

• The roots of plants exhibit positive geotaxis by growing downward toward the earth.
• Negative geotaxis causes plant shoots to grow upward against gravity.
• Scientists studied the geotaxis of bacteria in microgravity conditions.
• The seedling’s geotaxis helped it orient properly in the soil.
• Researchers observed geotaxis in various microorganisms during the experiment.
• The plant’s geotaxis response was disrupted when grown in a rotating chamber.