Mineral ions reach the xylem through which of the following pathways?
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Correct answer: Via apoplast or symplast, but must enter the symplast at the endodermis
Minerals can move through the cortex via the apoplast or symplast. However, the Casparian strip at the endodermis blocks the apoplast, forcing all minerals to enter the symplast to reach the xylem.
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More Mineral Transport in Plants questions
- Unlike water, most minerals cannot be absorbed by the roots passively because:
- 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?