Unlike water, most minerals cannot be absorbed by the roots passively because:
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Correct answer: Minerals exist as ions that cannot cross lipid bilayers without protein carriers
Minerals exist in the soil as ions which cannot cross lipid bilayers without assistance. Additionally, the concentration of minerals in the soil is usually lower than in the root, requiring energy for uptake against a gradient.
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More Mineral Transport in Plants questions
- The active uptake of ions from the soil into the root cells is responsible for:
- Which of the following acts as 'control points' where a plant adjusts the quantity and types of solutes that reach the xylem?
- The movement of ions into the 'free space' or 'outer space' of the cell without the expenditure of metabolic energy is known as:
- During the uptake of ions, the 'inner space' refers to the:
- What is the primary cause of 'Root Pressure' in plants?
- In which condition is root pressure most easily observed in plants?