Biology · Control and Coordination
The process of swelling or shrinking in plant cells, leading to changes in shape and movement (such as the opening and closing of stomata), is directly caused by which factor?
- 1The formation of new protein structures
- 2The stiffening of their cell walls
- 3The rapid breakdown of cellulose
- 4The alteration of their internal water content✓
Correct answer
The alteration of their internal water content
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