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प्रश्न
Paheli noticed water being pulled up by a motor pump to an overhead tank of a five-storeyed building. She wondered how water moves up to great heights in the tall trees standing next to the building. Can you tell me why?
उत्तर
If The root cells absorb water and mineral salts from the soil. A continuous upward flow of water from the roots to the top of the plant is maintained due to the suction pull (transpiration pull). This suction pull is created due to the continuous loss of water from the leaf surface by the process of transpiration.
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संबंधित प्रश्न
State the Function: Vitamin K
All veins carry deoxygenated blood.
What is the shape of RBC in human blood?
Mature RBC in mammals does not have cell organelles.
Why are leucocytes classified as granulocytes and agranulocytes? Name each cell and mention its functions.
Direction: In each of the following questions a statement of assertion (A) is given and a corresponding statement of Reason (R) is given just below it. Mark the correct statement as.
Assertion: Persons with AB blood group are called a universal recipient because they can receive blood from all groups.
Reason: Antibodies are absent in persons with AB blood group.
What prevents the backflow of blood inside the heart during contraction?
What is the special feature present in a human heart which does not allow the mixing of blood when oxygen-rich and carbon dioxide-rich blood reaches the heart?
Name the organ which is located in the chest cavity with its lower tip slightly tilted towards the left.
Why is it called an artery if it does not carry oxygen-rich blood?
