What is ment by gridling experiment?
Girdling experiment is used to identify the tissue through which the food is transported. in this experiment a ring of bark (phloem) is removed from the wood by a technique known as girdling. since the woody xylem part remains intact, water and nutrient reaches the leaves. after the preparation of the photosynthate it is not transported to other parts below the girdle since the phloem part is removed. so it is observed that there is accumulation of the photosynthate just above the girdle region. thus experiment shows that the phloem tissue aids the food transport..
The girdling experiment is performed to demonstrate:
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Girdling experiment is not successful in monocots due to A) Vascular bundles are not arranged in a ring B) Vascular bundles are arranged in a ring C) Vascular bundle are radial D) None of the above
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Ringing (girdling) experiment cannot be performed in
Indian rubber plant
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The correct Answer is: A
Step-by-step text solution: 1. understanding the ringing (girdling) experiment : the ringing or girdling experiment involves removing a ring of bark from a plant. this bark includes all tissues exterior to the vascular cambium, which consists of cork, phloem, and other layers. the purpose of this experiment is to observe the effects of removing the phloem, which is responsible for transporting food in the plant. 2. identifying plant types : plants can be classified into two main categories: dicots and monocots. in dicots, the vascular bundles are arranged in a ring, allowing for the removal of a ring of bark. in contrast, monocots have scattered vascular bundles, which makes it impossible to perform the girdling experiment effectively. 3. effects of girdling : when the bark is removed, the portion of the plant above the girdled area will swell due to the accumulation of food that cannot be transported downwards. this swelling indicates that the food transport mechanism has been disrupted. 4. historical context : the experiment was first conducted by malpighi, who aimed to understand the movement of food within plants. it was later confirmed that the phloem is responsible for this transport, and it is primarily unidirectional. 5. determining the inapplicable plants : since girdling can only be performed in dicots due to their vascular structure, we need to identify a monocot from the provided options. 6. analyzing the options : the question provides several plant options, including sugarcane, mango, indian rubber plant, and tectona. among these, sugarcane is a monocot, while the others are dicots. 7. conclusion : based on the classification of the plants, the ringing (girdling) experiment cannot be performed in sugarcane, which is the correct answer. final answer : the ringing (girdling) experiment cannot be performed in sugarcane . ---, topper's solved these questions.
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- Can girdling experiments be done in monocots? If yes, How? If no, why not?
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Can girdling experiments be done in monocots? If yes, How? If no, why not?
Answers (1).
it is not possible to do the girdling experiment in monocots. This is mainly because vascular bundles are scattered all over the stem width of the monocots. Hence, a specific band of phloem can be reached for carrying out the experiment effectively.
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COMMENTS
Solution. The girding experiment refers to the removal of the outer layer of a stem. By doing so, you are cutting off the phloem of a stem, not allowing it's supply to flow to the roots, resulting in their death. The 'food' supplied by the phloem is blocked above the area of removal.
It is primarily done to improve yield and reproductive rate. So in the monocotyledons, Girdling's experiment cannot be performed. Note: Girdling results in over time, the death of the area above the girdle.
Girdling experiment is used to identify the tissue through which the food is transported. In this experiment a ring of bark (phloem) is removed from the wood by a technique known as girdling. Since the woody xylem part remains intact, water and nutrient reaches the leaves.
In this experiment the tissue outside of the vascular cambium is being removed that includes bark, phloem, and cortex except xylem. The xylem is the remaining tissue in the girdle’s portion that connects the upper and the lower portion of the plants.
The girdling experiment is used to identify the tissue through which food is conducted. In this experiment, a ring of phloem is removed from the woody plant. Hence girdling experiments cannot be performed on a monocot stem-like sugarcane.
Best answer. Correct option (c) Its vascular bundles are not present in a ring. Explanation: In ringing experiment removal of bark breaks the continuity of epidermis, cortex and phloem. It shows clearly that epidermis, cortex and phloem do not take part in transport of sap or water.
The correct Answer is: A. Step-by-Step Text Solution: 1. Understanding the Ringing (Girdling) Experiment: The ringing or girdling experiment involves removing a ring of bark from a plant. This bark includes all tissues exterior to the vascular cambium, which consists of cork, phloem, and other layers.
it is not possible to do the girdling experiment in monocots. This is mainly because vascular bundles are scattered all over the stem width of the monocots. Hence, a specific band of phloem can be reached for carrying out the experiment effectively.
The experiments in which the continuity of vascular tissues is disturbed by their removal are known as girdling experiments. It is not successful in monocots plants because they have scattered vascular bundles i.e., that lack organisation. This is called the atactostelic condition.
Solution. Verified by Toppr. Correct option is A) Girlding is a process in which the outer ring of the stem or the bark is removed. Sometimes the inner cambium is removed too. This doesn't necessarily harm the vascular bundle in mango, rubber plant and willows. In sugarcane the vascular bundles are scattered so it cannot withstand girdling.