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प्रश्न
What essential role does the root endodermis play during mineral absorption in plants?
उत्तर १
In plants, nutrients are absorbed through the active and passive transports. The endodermal cells of the roots containing suberin allow only selected minerals to pass through them. The transport proteins present in the membranes of these cells act as check points for the various solutes reaching the xylem
उत्तर २
Like all cells, the endodermal cells have many transport proteins embedded in their plasma membrane; they let some solutes cross the membrane, but not others. Transport proteins of endodermal cells are control points, where a plant adjusts the quantity and types of solutes that reach the xylem. Because of the layer of suberin, the root endodermis has the ability to actively transport ions in one direction only.
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संबंधित प्रश्न
Explain why xylem transport is unidirectional and phloem transport bi-directional.
Statement I: Minerals enter the roots majorly by active absorption.
Statement II: The concentration of mineral ions is greater in root hairs when compared to the surrounding soil.
The correct statement/s is/are
All minerals cannot be passively absorbed by the roots because
Cut pieces of beetroot do not leave colour in cold water but do so in hot water. Explain.
Minerals are present in the soil in sufficient amounts. Do plants need to adjust the types of solutes that reach the xylem? Which molecules help to adjust this? How do plants regulate the type and quantity of solutes that reach xylem?
