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प्रश्न
Define the term Vital capacity.
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उत्तर
The largest amount of air that can be expelled following a maximum inspiration. It is the sum of TV, IRV, and ERV and ranges from 4100 to 4600 mL.
संबंधित प्रश्न
Water reaches great heights in the trees because of suction pull caused by ______.
The loss of water in the form of water vapour through stomata on leaves is known as ___________.
Transpiration is defined as:
Briefly explain, how transpiration helps in upward conduction of water in plants?
The set up shown alongside was kept in sunlight for an hour. It was observed that drops of water appeared on the inside of the polyethylene bag.
- Name the process which is being demonstrated.
- Why was the pot and its soil left uncovered by the polythene bag?
- Why was the pot left in the sunlight?
- Suppose the pot in this experiment was placed inside a dark room instead of placing it in sunlight for some time. What difference will be noticed?
State whether the following statement is true or false. Rewrite the false statement correctly.
Transpiration cools the plant when it is hot outside.
Define the termTranspiration
Given alongside is the diagram of an experimental set-up to demonstrate a certain phenomenon in plants.
Name the phenomenon being demonstrated.
Give a reason.
What happens to the movement of the air-bubble if the apparatus shown above is kept in front of a fan?
Choose the correct answer:
More water loss in plants is the cause of wilting. This can be checked by ____________
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:
Mention two ways in which this process is beneficial to plants.
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:
List three adaptations in plants to reduce the above mentioned process.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Moist cobalt chloride paper is blue in colour.
During transpiration, there is a loss of ______
Guard cells are responsible for the opening and closing of stomata.
Boojho’s uncle was hospitalised and put on dialysis after a severe infection in both of his kidneys.
When does it become necessary to take such a treatment?
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.
ABA (Abscisic acid) is called a stress hormone. How does this hormone overcome stress conditions?
Water molecule is very polar. Polar end of molecule attracts opposite charges on another water molecule (acts like magnet). How will you explain this property of water with reference to upward movement of water? Comment on the upward movement of water given the intermolecular hydrogen bonding in water.
Observe the following diagram and identify the process and its significance from the following options:
