Transpiration is the process by which water is pulled from the roots of the plant through the stems and leaves and released through microscopic holes in the leaves called stomata. The water is pulled up, against the force of gravity because of the interplay of two forces: cohesion and adhesion.
How do you define transpiration?
Definition of transpiration
: the act or process or an instance of transpiring especially : the passage of watery vapor from a living body (as of a plant) through a membrane or pores.
What is transpiration for Class 7th?
Answer: Transpiration is the evaporation of excess water from the surface of a leaf, through the stomata. Transpiration produces a cooling effect and thus saves the plant from the hot sun.
What is transpiration with example?
Transpiration is the process where plants absorb water through the roots and then give off water vapor through pores in their leaves. An example of transpiration is when a plant absorbs water in its roots.
What is transpiration in science for kids? – Related Questions
What causes transpiration?
Transpiration is caused by the evaporation of water at the leaf–atmosphere interface; it creates negative pressure (tension) equivalent to –2 MPa at the leaf surface. This value varies greatly depending on the vapor pressure deficit, which can be negligible at high relative humidity (RH) and substantial at low RH.
Who discovered transpiration?
Dixon wrote Transpiration and the Ascent of Sap in Plants (1914), which brought various theories and experimental work together in a coherent argument. He also wrote a textbook, Practical Plant Biology (1922).
What is transpiration Class 6 short answer?
The process by which plants remove excess water through stomata present on the surface of leaves is called ‘transpiration’. Transpiration is essentially evaporation of water from leaves of the plant.
What is transpiration and types?
There are three kinds of transpiration: stomatal transpiration, cuticular transpiration and lenticular transpiration. Stomatal transpiration. Mechanism of stomatal transpiration involves following steps: Osmotic diffusion of water from xylem to inter cellular spaces through mesophyll cells.
What is transpiration Class 10 Ncert?
11.4 TRANSPIRATION. Transpiration is the evaporative loss of water by plants. It occurs mainly through stomata (sing. : stoma). Besides the loss of water vapour in transpiration, exchange of oxygen and carbon dioxide in the leaf also occurs through these stomata.
What is transpiration in water cycle?
Transpiration occurs when plants take up liquid water from the soil and release water vapor into the air from their leaves.
What is transpiration long answer?
Transpiration is the process of water movement through a plant and its evaporation from aerial parts, such as leaves, stems and flowers. Water is necessary for plants but only a small amount of water taken up by the roots is used for growth and metabolism. The remaining 97–99.5% is lost by transpiration and guttation.
Why is transpiration important in plants?
The process of transpiration keeps the cell turgid, cools the surface of the leaves, and helps in the movement of minerals from the soil to different parts of the plant. Transpiration helps in the conduction of water and minerals to different parts of the plants.
What is water cycle for Class 3?
The water cycle is the process of water moving around between the air and land. Or in more scientific terms: the water cycle is the process of water evaporating and condensing on planet Earth in a continuous process.
What is a water cycle Grade 4?
There are four main stages in the water cycle. They are evaporation, condensation, precipitation and collection. Let’s look at each of these stages.
What is a water cycle Class 6?
The constant movement of water from the Earth to the atmosphere and back to the Earth through the process of evaporation, condensation and precipitation is known as the water cycle.
What is the water cycle for Class 2?
The four main stages of the water cycle are evaporation, condensation, precipitation and runoff. Sun: the water cycle is driven by the energy from the sun warming the earth. Evaporation: the warmth of the sun causes water from lakes, rivers and oceans to evaporate and turn from a liquid to a gas.
What is 7th water cycle?
The constant movement of water from the Earth to the atmosphere and back to the Earth through the process of evaporation, condensation and precipitation is known as the water cycle.
What is water made of kids?
We are all made of atoms stuck together (or, as scientists would say, “bonded”). Atoms bonded together form molecules. A molecule of pure water is made of two hydrogen atoms bonded to an oxygen atom.
What is the water cycle Class 5?
In the water cycle, water from lakes, rivers, and oceans evaporate and enter the atmosphere where it cools, condenses into liquid water, and comes back to Earth as rain.
How are clouds formed Class 6?
Water present on the earth’s surface gets evaporated due to sunlight, and then rises up in the atmosphere. On reaching a certain height, water vapour present in air condenses to form tiny droplets of water. These water droplets collect to form clouds that float in air.
What is 9th water cycle?
Hint:The water cycle is the process of recycling the water within the ecosystem. There are different stages of the water cycle in which the whole process is carried out. The processes are evaporation, condensation, precipitation and deposition.
