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प्रश्न
What is Active transport?
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उत्तर
Active transport is the passage of a substance (salt or ion) from its lower to higher concentration through a living cell membrane using energy from the cell. Active transport is in a direction opposite to that of diffusion. Certain nutrients, such as ions of nitrates, sulphates, potassium, zinc, manganese, etc., cannot pass through the cell membrane of the root cells easily. This is because their concentration is higher inside the root cells, and it is so maintained in order to develop osmotic pressure for absorbing water.
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संबंधित प्रश्न
Describe the role played by protein pumps during active transport in plants.
State the main function of the Guard cells
Name the following:
The wax-like layer on the epidermis of leaves which reduces transpiration.
Name the plant tissue which helps in carrying the food to different parts of a plant.
Fill in the blank with the suitable term given below:
The upward movement of sap that contains water and minerals is called _______ of sap.
Fill in the blank with the suitable term given below:
Most water gets evaporated from the plant from its __________.
Active transport is in a direction ______ to that of diffusion.
Which of the following process requires energy?
In a passive transport across a membrane, when two different molecules move in opposite direction and independent of each other, it is called as ______.
Define the following term:
Active transport
