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By which phenomenon does the water rise from roots to leaves of plants?
- a)Capillary action
- b)Surface Tension
- c)Bernoulli’s Theorem
- d)Viscosity
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
By which phenomenon does the water rise from roots to leaves of plants...
Plants use capillary action to bring water from the soil up through capillaries, small tubes in the plants, to the rest of the plant. Due to gravity, capillary action is not strong enough for the water to travel to the top of the plant. Another process, transpiration pull does the rest of the work.
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By which phenomenon does the water rise from roots to leaves of plants...
Introduction
The movement of water from the roots to the leaves of plants is primarily driven by capillary action. This process is crucial for maintaining the plant's hydration and overall health.
What is Capillary Action?
- Capillary action refers to the ability of water to flow in narrow spaces without the assistance of external forces.
- It occurs due to the combination of cohesive and adhesive forces.
Cohesion and Adhesion
- Cohesion: Water molecules are attracted to each other, which allows them to stick together. This property helps water to remain in a continuous column inside the plant’s xylem vessels.
- Adhesion: Water molecules also stick to the walls of the xylem vessels, which are made of cellulose. This attraction helps pull the water upwards against the force of gravity.
Role of Transpiration
- Transpiration is the process by which water evaporates from the leaves of the plant.
- As water vapor escapes from the stomata, it creates a negative pressure (tension) within the xylem.
- This tension further aids in pulling more water from the roots to the leaves.
Importance of Capillary Action in Plants
- Nutrient Transport: Water carries essential nutrients from the soil to various parts of the plant.
- Photosynthesis: Water is vital for photosynthesis, which occurs in the leaves.
- Temperature Regulation: Transpiration helps regulate the plant's temperature.
Conclusion
In summary, capillary action, alongside transpiration, is fundamental to the movement of water in plants, ensuring they receive the necessary hydration and nutrients for growth.
The movement of water from the roots to the leaves of plants is primarily driven by capillary action. This process is crucial for maintaining the plant's hydration and overall health.
What is Capillary Action?
- Capillary action refers to the ability of water to flow in narrow spaces without the assistance of external forces.
- It occurs due to the combination of cohesive and adhesive forces.
Cohesion and Adhesion
- Cohesion: Water molecules are attracted to each other, which allows them to stick together. This property helps water to remain in a continuous column inside the plant’s xylem vessels.
- Adhesion: Water molecules also stick to the walls of the xylem vessels, which are made of cellulose. This attraction helps pull the water upwards against the force of gravity.
Role of Transpiration
- Transpiration is the process by which water evaporates from the leaves of the plant.
- As water vapor escapes from the stomata, it creates a negative pressure (tension) within the xylem.
- This tension further aids in pulling more water from the roots to the leaves.
Importance of Capillary Action in Plants
- Nutrient Transport: Water carries essential nutrients from the soil to various parts of the plant.
- Photosynthesis: Water is vital for photosynthesis, which occurs in the leaves.
- Temperature Regulation: Transpiration helps regulate the plant's temperature.
Conclusion
In summary, capillary action, alongside transpiration, is fundamental to the movement of water in plants, ensuring they receive the necessary hydration and nutrients for growth.
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By which phenomenon does the water rise from roots to leaves of plants?a)Capillary actionb)Surface Tensionc)Bernoulli’s Theoremd)ViscosityCorrect answer is option 'A'. Can you explain this answer?
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