In Response to Drying Soils

question 85

Multiple Choice

In response to drying soils:

• A)elongation in roots is suppressed, leading to thick and tougher roots better able to pull water from the soil.
• B)elongation in roots is promoted, allowing roots to extend deeper into potentially wetter soil layers.
• C)cell division in roots accelerates, allowing roots to extend deeper into potentially wetter soil layers.
• D)older root xylem walls thicken to resist the higher tensions needed to pull water from the soil.

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