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Question
Stomata of a plant open due to ______.
Options
Influx of K+
Effrilx of K+
Influx of Cl–
Influx of OH–
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Solution
Stomata of a plant open due to influx of K+.
RELATED QUESTIONS
Discuss the factors responsible for ascent of xylem sap in 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:
- Name the process being studied.
- Explain the process named above in Q.3(a)(i).
- Why was the pot covered with a plastic sheet?
- Suggest a suitable control for this experiment.
- Mention two ways in which this process is beneficial to plants.
- List three adaptations in plants to reduce the above mentioned process.
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 is the loss of water from the roots of the plant.
Multiple choice question. Tick (✓) the correct choice:
The loss of water through the stomata of leaves is called
(a) transpiration
(b) wilting
(c) evaporation
(d) osmosis
How does transpiration help in the uptake of water from the soil?
Distinguish between the following :
Cuticular transpiration and lenticular transpiration
Design an experiment to demonstrate the transpiration process.
Define the following term:
Transpiration
Explain the term:
Transpiration
What type of transpiration is possible in the xerophyte Opuntia?
Transpiration is a necessary evil in plants. Explain.
Do different species of plants growing in the same area show the same rate of transpiration at a particular time? Justify your answer.
Will the ascent of sap be possible without the cohesion and adhesion of the water molecules? Explain.
Keep some freshly cut flowers in a solution of food colour. Wait for sometime for the dye to rise in the flower, when the stem of the flower is held up in light, coloured strands can be seen inside. Can this experiment demonstrate which tissue is conducting water up the stem?
Plants show temporary and permanent wilting. Differentiate between the two. Do any of them indicate the water status of the soil?
Enlist different advantages of transpiration.
Transpiration occurs:
