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प्रश्न
Stomata of a plant open due to ______.
विकल्प
Influx of K+
Effrilx of K+
Influx of Cl–
Influx of OH–
उत्तर
Stomata of a plant open due to influx of K+.
संबंधित प्रश्न
Water reaches great heights in the trees because of suction pull caused by ______.
Which of the following helps in the upward movement of water and dissolved minerals from the roots to the leaves through the stem?
Briefly explain, how transpiration helps in upward conduction of water in plants?
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 term Transpiration stream
(a) State whether the following statement are True or False.
(b) Rewrite the false statement in the correct form by changing either the first or the last word only.
Most transpiration occurs at midnight.
Give suitable explanation for the following:
Perspiration and transpiration help to cool the body temperature of the organism.
Give suitable explanation for the following:
On a bright sunny day, the leaves of certain plants roll up.
Litmus paper is used to demonstrate transpiration from the leaves of the green plant.
Choose the correct answer:
More water loss in plants is the cause of wilting. This can be checked by ____________
The figure given below represents an experimental setup with a weighing machine to demonstrate a particular process in plants. The experimental setup was placed in bright sunlight. Study the diagram and answer the following questions.
Name the process intended for study.
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:
List three adaptations in plants to reduce the above mentioned process.
Define the following Term:
Transpiration
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.
Give the importance of transpiration?
Analogy:
Photosynthesis: ______:: Transpiration: Stomata
Do different species of plants growing in the same area show the same rate of transpiration at a particular time? Justify your answer.
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?
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.
