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प्रश्न
Define the following Term:
Transpiration
उत्तर
Loss of water vapour through the stomatal openings of the leaves of a plant is termed as transpiration.
संबंधित प्रश्न
Water reaches great heights in the trees because of suction pull caused by ______.
Briefly explain, how transpiration helps in upward conduction of water in plants?
Define the term Transpiration stream
Transpiration is the loss of water as water ______ from the ______ parts of the plant.
Give a reason.
What happens to the movement of the air-bubble if the apparatus shown above is kept in dark.
A well watered healthy potted plant with variegated leaves was kept in darkness for about 24 hours. It was then set up as shown in the diagram and exposed to light for about 12 hours. At the end of this time, leaf x and y were tested for starch. Study the diagram and answer the questions that follow:
(i) Why was the plant initially kept in darkness for 24 hours?
(ii) What is the function of sodium hydroxide solution in the flask?
(iii) Select the correct leaf from the five available choices shown in the diagram as a, b, c, d and e. Rewrite the correct answer by filling in the appropriate letter for the questions that follow:
1. After the starch test, leaf x would look like ______.
2. After the starch test, leaf y would look like ______.
(iv) The experiment with leaf y shows that photosynthesis requires the presence of certain factors. Mention any one factor.
Given alongside is the diagram of an experimental set-up to demonstrate a certain phenomenon in plants.
What is the purpose of putting oil in the test tube?
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?
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:
Mention two ways in which this process is beneficial to plants.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Calcium chloride paper is used to demonstrate transpiration
Answer the following question.
Define and or explain the term:
Guttation
Boojho’s uncle was hospitalised and put on dialysis after a severe infection in both of his kidneys.
What is dialysis?
The lower surface of leaf will have more number of stomata in a ______.
ABA (Abscisic acid) is called a stress hormone. How does this hormone overcome stress conditions?
A root hair is derived from ______ cell.
Enlist different advantages of transpiration.
Which of the following is an external factor affecting the rate of transpiration?
