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The pathway of the movement of water through the cell wall and extracellular space only is called
A. Plasmodesmata pathway
B. Vacuolar pathway
C. Symplast pathway
D. Apoplast pathway

Answer :

The apoplast pathway facilitates water movement through the cell wall and extracellular space only. Thus, the correct answer is: D. Apoplast pathway

The pathway of water movement through the cell wall and extracellular space is called the apoplast pathway. This process occurs when water moves through the porous cell walls and intercellular spaces without entering the cells themselves. As a result, water can travel rapidly through this pathway, facilitated by osmotic and pressure gradients along the apoplast.

In the apoplast pathway, water moves along a continuous network of cell walls, creating a pathway that allows for efficient transport of water from the roots to the leaves. This movement is driven by the cohesive and adhesive properties of water molecules, as well as the tension generated by transpiration at the leaves.

Additionally, the apoplast pathway enables the uptake of water and nutrients from the soil by the roots, as water moves through the soil matrix and into the root cells via osmosis. Once inside the root cells, water can then follow the apoplast pathway to reach the xylem vessels, where it is transported upwards towards the aerial parts of the plant.

Overall, the apoplast pathway plays a crucial role in the overall water transport system of plants, facilitating the movement of water from the roots to the shoots and ensuring proper hydration and nutrient distribution throughout the plant's tissues.

Therefore, the correct answer is: D. Apoplast pathway

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