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Plants have leaves which contain guard cells and palisade cells. Explain how each of these kinds of cell assists photosynthesis. Guard cells

Question

Plants have leaves which contain guard cells and palisade cells. Explain how each of these kinds of cell assists photosynthesis. Guard cells

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Solution

Guard cells and palisade cells play crucial roles in the process of photosynthesis in plants.

  1. Guard Cells: Guard cells are specialized cells in the epidermis of leaves, stems and other organs that are used to control gas exchange. They are produced in pairs with a gap between them that forms a stomatal pore. The primary function of the guard cells is to control the opening and closing of the stomata, thus regulating the exchange of gases, particularly carbon dioxide and oxygen, between the outside air and the interior of the leaf. During the day, guard cells take in water by osmosis and become turgid, causing the stomata to open. This allows carbon dioxide to enter the leaf for photosynthesis. At night, when photosynthesis is not happening, guard cells lose water and become flaccid, causing the stomata to close and prevent water loss.

  2. Palisade Cells: Palisade cells are a type of leaf tissues and can be found in the mesophyll in leaves directly below the epidermis. These cells are elongated and packed with many chloroplasts. Palisade cells are the site where most of the photosynthesis process in the plant occurs. They contain a large number of chloroplasts, which are necessary for photosynthesis, where light energy is converted into glucose. These cells absorb a major portion of the light energy used by the leaf due to their location on the upper side of the leaf.

In summary, guard cells regulate the gas exchange necessary for photosynthesis, while palisade cells are where the majority of photosynthesis occurs.

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Similar Questions

Which part of a plant captures the light energy used in photosynthesis? A. guard cells B. chlorophyll C. roots

What are the functions of stomata and guard cells, and what would happen to a plant if these cells did not function correctly?Group of answer choicesStomata allow gases to enter and exit the plant. Guard cells regulate the opening and closing of stomata. Photosynthesis and, in turn, transpiration, would not occur which is necessary to maintain a continuous flow of water upwards from the roots to the leaves.Guard cells allow carbon dioxide to enter and exit the plant. Stomata regulate the opening and closing of guard cells. Transpiration and in turn, photosynthesis would not occur which is necessary to maintain a continuous flow of water upwards from the roots to the leaves.Stomata allow oxygen to enter and exit the plant. Guard cells regulate the opening and closing of stomata. If the cells didn’t function, photosynthesis would continue but transpiration would cease, which would interfere with the necessary continuous flow of water upward from roots to leaves.Guard cells allow carbon dioxide to enter and exit the plant. Stomata regulate the opening and closing of guard cells. If the cells didn’t function, photosynthesis and transpiration would cease, which would interfere with the necessary continuous flow of water upward from roots to leaves.

What do the guard cells in the dermal tissue of a plant do?A.Control the passage of carbon dioxide, oxygen, and water vaporB.Form a hard covering that turns into lignin and woodC.Allow the plant to move in response to sunlightD.Extend into the soil and increase the surface area of the rootSUBMITarrow_backPREVIOUS

What is transpiration in plants?The absorption of water by the root hair cellsThe absorption of water through the leavesThe movement of water through a plant due to evaporation from the leavesThe movement of water through the phloem cells2Which substances enter and leave the plant through the stomata?Oxygen enters; carbon dioxide and water leaveCarbon dioxide and water enter; oxygen leavesWater and oxygen enter; carbon dioxide leavesCarbon dioxide enters; water and oxygen leaves3Which cells control the opening and closing of the stomata?Palisade cellsPhloem cellsGuard cellsXylem cells4What happens to the rate of transpiration when the temperature is increased?It stays the sameIt increasesIt decreasesIt stops altogether5Why does the rate of transpiration decrease in very humid conditions?Because there will be more water inside the leaf than in the air Because the rate of photosynthesis increasesBecause the rate of photosynthesis decreasesBecause there will be less water inside the leaf than in the air6Why are stomata normally found on the underside of leaves?So that they are shaded from the sunSo that they are nearer the ground So that they are protected from rainTo allow water to escape from the leaves by gravity

A special photosynthetic pathway (CAM) in plants serves as an adaptation against

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