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Asked by Vineeth Last Modified
Answer (a) False. Boron deficiency leads to the formation of a thin and elongated stem with brittle cell walls, a condition known as "hollow stem" or "hollow heart."
(b) False. Not every mineral element present in a cell is necessarily needed by the cell. Some elements may be present in the cell due to environmental exposure or uptake but may not have a specific biological function or may even be harmful.
(c) False. Nitrogen is a highly mobile nutrient in plants, readily transported within the plant from older to younger tissues as needed. It is essential for processes such as protein synthesis, photosynthesis, and nucleic acid metabolism.
(d) False. It is not always easy to establish the essentiality of micronutrients because they are required in trace quantities. Since they are needed in smaller amounts compared to macronutrients, their deficiency symptoms may be subtle and difficult to identify. Additionally, some micronutrients may interact with other elements, making it challenging to isolate their specific roles in plant physiology.
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