Explain how plants respond to external stimuli to enhance survival in an environment in five bullet points
- Plants use phototropism to respond to external stimuli related to light. They grow towards light sources to maximize their ability to perform photosynthesis and obtain energy.
- They use gravitropism to respond to gravity. Roots grow downwards towards gravity, while shoots grow upwards against gravity. This helps plants anchor themselves and optimize their ability to access resources.
- Plants employ thigmotropism to respond to physical touch or contact. They can wrap around structures or objects in their environment to gain support and stability.
- Plants exhibit hydrotropism, which is a response to water. They extend their roots towards sources of water to ensure adequate hydration and nutrient absorption.
- They activate their defense mechanisms to respond to external threats, such as insect attacks or pathogenic infections. This includes producing specific chemicals or toxins that deter or kill the invaders, as well as reinforcing their cell walls to provide physical protection.
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- Plants use phototropism to grow towards light sources and optimize photosynthesis.
- They employ gravitropism to anchor themselves and grow in the direction of gravity, optimizing resource access.
- Thigmotropism allows plants to wrap around structures for support and stability.
- Hydrotropism drives roots towards water sources for hydration and nutrient absorption.
- Plants activate defense mechanisms to respond to threats, producing chemicals and reinforcing their cell walls.