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Biology Chapter 8 : Topic 14
Osmotic Adjustments in Plants
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Osmotic adjustment in plants refers to:
Reasoning: Osmotic adjustment is the ability of cells to regulate water movement by changing internal solute concentration.
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The main purpose of osmotic adjustment is to:
Reasoning: It helps cells maintain water content and turgor pressure.
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When soil water is low, plant cells usually:
Reasoning: Increasing solutes lowers water potential and helps water enter cells.
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Osmotic adjustment mainly affects:
Reasoning: It changes water potential to control water movement.
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Which structure is most directly involved in osmotic regulation?
Reasoning: Vacuoles regulate solute concentration inside cells.
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In dry conditions, plants accumulate compatible solutes to:
Reasoning: Solutes help draw water into cells by osmosis.
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Which of the following is an example of osmotic adjustment?
Reasoning: Salt accumulation lowers water potential inside cells.
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Osmotic adjustment helps plants mainly during:
Reasoning: It is a survival response to low water availability.
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Water enters plant cells when:
Reasoning: Water moves from higher to lower water potential.
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Which organelle stores solutes that help in osmotic adjustment?
Reasoning: Vacuoles store ions and solutes that regulate osmosis.
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Increasing solute concentration in cells results in:
Reasoning: More solutes lower water potential, attracting water.
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Osmotic adjustment is important for:
Reasoning: It helps maintain turgor pressure in cells.
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Which condition would trigger osmotic adjustment in plants?
Reasoning: Water shortage causes cells to adjust solute levels.
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Osmotic adjustment improves plant survival by:
Reasoning: It prevents excessive water loss from cells.
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Which statement best describes osmotic adjustment?
Reasoning: It is the regulation of solutes to maintain water balance in plant cells. -----------------------------------------------------------------------
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