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प्रश्न
Given alongside is the diagram of an experimental set-up to demonstrate a certain phenomenon in plants.
What is the purpose of the spring balance in the set-up?
उत्तर
The spring balance progressively measures the change in weight of the set-up. This is because as the plant transpires, it creates a suction force in the plant which allows roots to absorb more water from the test tube. Hence, the water in the test will get reduced. Thus, the weight of the entire set will decrease.
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संबंधित प्रश्न
State whether the following statement is true or false. Rewrite the false statement correctly.
Transpiration is the loss of water from the roots of the plant.
How does transpiration help the roots absorb water and minerals from the soil?
An apparatus as shown below was set up to investigate a physiological process in plants. The setup was kept in sunlight for two hours. Droplets of water were then seen inside the bell jar. Answer the questions that follow:
Explain the process named above in 7.1.
An apparatus as shown below was set up to investigate a physiological process in plants. The setup was kept in sunlight for two hours. Droplets of water were then seen inside the bell jar. Answer the questions that follow:
Why was the pot covered with a plastic sheet?
During transpiration, there is a loss of ______
Boojho wanted to test the presence of starch in leaves. He performed the following steps.
- He took a leaf and boiled it in water.
- He placed the leaf in a petri dish and poured some iodine over it.
He did not get the expected result. Which step did he miss? Explain.
Identify the wrong statement and correct it.
Leaves perform the function of transpiration only.
ABA (Abscisic acid) is called a stress hormone. From where does this hormone get released in leaves?
Which of the following is an external factor affecting the rate of transpiration?
