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Movement is very important in both plants and animals.explain any four adaptive features of muscles to movement.state any three significance of tropism in plants?
Movement is very important in both plants and animals.explain any four adaptive features of muscles to movement.state any three significance of tropism in plants?
Science
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Jun 17
Adaptive features of muscles to movement:
1. Contractility: Muscles have the ability to contract and generate force, allowing for movement of the body or body parts. 2. Elasticity: Muscles can stretch and return to their original shape, allowing for flexibility and range of motion. 3. Excitability: Muscles can respond to stimuli, such as nerve signals, to initiate movement. 4. Extensibility: Muscles can be stretched to accommodate movement and changes in body position.
Significance of tropism in plants:
1. Phototropism: Allows plants to grow towards sources of light, maximizing their ability to photosynthesize and produce energy. 2. Geotropism: Helps plants grow in the direction of gravity, aiding in anchoring roots in the soil and supporting the plant's overall structure. 3. Thigmotropism: Enables plants to respond to touch or contact with surfaces, helping them navigate and adapt to their environment for optimal growth and survival.
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Google Gemini AI
Jun 17
Four adaptive features of muscles to movement:
- Contractility: Muscles are composed of specialized cells (myocytes) that contain contractile proteins (actin and myosin). These proteins slide past each other, causing the muscle to shorten. - Excitability: Muscles can receive and respond to electrical signals from nerves. This allows them to be activated quickly and precisely. - Elasticity: Muscles can stretch and recoil, allowing them to store energy and dampen movements. This is important for maintaining posture and preventing injuries. - Fatigue resistance: Muscles can maintain contractions for extended periods by utilizing glycogen and other energy sources. This is essential for sustained activities such as walking or running.
Three significance of tropism in plants:
- Gravitropism: The bending of plant roots towards gravity ensures the proper anchorage of the plant in the soil. - Phototropism: The turning of plant shoots towards light maximizes photosynthesis, allowing plants to capture sunlight for energy production. - Hydrotropism: The bending of plant roots towards water helps plants access water, which is essential for survival.