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    Define the term transpiration . Design an experiment to demonstrate this process.

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    Updated on : 2022-09-05

    Transpiration is the loss of water molecules in the form of water vapour through pores of the plants like the stomata and lenticels.

    Solution Verified by Toppr

    Experiment: When a polythene bag is tied around leaf of a plant and left for a number of hours, we observe water droplets accumulated inside the bag.

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    85 7 SIMILAR QUESTIONS

    Which of the following is not the purpose of transpiration process?

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    Transpiration is a process related to

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    If transpiration doesn't take place in plants, which process will  also not occur?

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    Which of the following processes keeps plant cool?

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    Which is the process mainly involved in transpiration?

    Medium View solution > MORE FROM CHAPTER Transport in Plants View chapter >

    REVISE WITH CONCEPTS

    Transpiration

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    Transpiration and Photosynthesis – A Compromise

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    Factors Affecting Transpiration - External

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    स्रोत : www.toppr.com

    Define the term transpiration. Design an experiment to demonstrate this process.

    Define the term transpiration. Design an experiment to demonstrate this process.

    Byju's Answer Define the te... Question

    Define the term transpiration. Design an experiment to demonstrate this process.

    Open in App Solution

    Transpiration :

    Transpiration is the process of loss of water in the form of water vapour through the aerial parts of the plant.

    Most of the transpiration is carried out by the leaves with the help of stomatal pores on it.

    Transpiration creates a suction force that helps in the upward movement of water and minerals from roots to different parts of the plants.

    It maintains osmosis and keeps the cells rigid.

    Experiment no 1: Bell jar experimentProcedure :

    Take a well watered potted plant and keep the plant on the glass plate and cover it with a bell jar.

    Apply vaseline or grease at the base of the bell jar to prevent outer air from coming inside, making it air tight.

    Keep the whole apparatus in light for about two to three hours and observe.

    Observation :

    Few waterdrops are observed on the inner side of the bell jar.

    Result :

    Transpiration occurs from potted plants in the form of water vapour which condenses to form water droplets.

    Experiment no 2 : Cobalt chloride experiment.Procedure :

    A plant with broad leaf is taken and is covered with the polythene bag to escape the water vapour from the pot.

    The entire set up is placed in the bell jar, containing the piece of cobalt chloride paper.

    Another control setup is designed as a control experiment without the plant but with cobalt chloride paper.

    Observation :

    The change in the cobalt chloride paper, present in the first bell jar ,having the plant turns from blue to pink. This is because the cobalt chloride paper reacts with water vapour, lost from the plant.

    But no color change was seen in the second bell jar, without the plant.

    Result :

    The change in the cobalt chloride paper ensures the occurrence of transpiration in the plant.

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    SIMILAR QUESTIONS

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    State Pascal's law. Give a simple experiment to demonstrate this law.

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    Question 5

    Design an experiment to demonstrate hydrotropism.

    Q. Define Inertia. Describe a simple experiment to demonstrate the inertia of rest.Q. In any experiment to demonstrate transpiration, the leaf must remain attached to its parent plant. Why is this so?

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    स्रोत : byjus.com

    Define the term transpiration. Design an experiment to demonstrate

    Define the term transpiration. Design an experiment to demonstrate this process.

    Previous Question Next Question Question :

    Define the term transpiration. Design an experiment to demonstrate this process.

    Answer :

    Transpiration is defined as the evaporation of excess water from the stomata present in the leaves of plants. Experiment to show transpiration process: Procedure:i Take a healthy potted plant and cover the pot with the help of rubber sheet. Aerial parts remain uncovered ii Keep the plant on glass plate and cover it with a bell jar. iii Apply Vaseline at the base of bell jar to prevent outer air coming inside. iv Keep the whole apparatus is light and observe for sometime.Observation : Water drops appear inside the bell jar Result : Transpiration occurs from potted plant.

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