3.5B Water absorption by root hair cells
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By which process does water enter a root hair cell?
(1)Total for this question: 1 mark
3(h) TRANSPORT · EXAM QUESTIONS
3.5B Water absorption by root hair cells
14 exam-style questions · Biology only (B): not in Science (Double Award). Write your answer, check it against the mark scheme and tick the points you earned. Your marks stay on this device. Your writing is not saved.
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3.5B Water absorption by root hair cells
Exam question
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Explain how root hair cells are adapted to absorb water.
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Total for this question: 3 marks
3.5B Water absorption by root hair cells
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Explain why root hair cells have many mitochondria.
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Total for this question: 2 marks
3.5B Water absorption by root hair cells
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Explain why plants watered with sea water wilt.
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Total for this question: 3 marks
3.5B Water absorption by root hair cells
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Explain why transplanted seedlings often wilt if the soil is shaken from their roots.
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Total for this question: 2 marks
3.5B Water absorption by root hair cells
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Describe how water moves from a root hair cell to the xylem.
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Total for this question: 2 marks
3.5B Water absorption by root hair cells
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Which condition would most reduce the uptake of mineral ions by roots?
(1)Total for this question: 1 mark
3.5B Water absorption by root hair cells
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Illustrative context: a gardener spreads three times the recommended fertiliser.
Over-fertilising a lawn can cause the grass to wilt. Explain why.
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Total for this question: 2 marks
3.5B Water absorption by root hair cells
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Some plants have fungi growing around their roots. The fungal threads spread far into the soil. Suggest how this helps the plant.
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Total for this question: 2 marks
3.5B Water absorption by root hair cells
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A root hair is 1.2 mm long. Its diameter is 0.012 mm. Calculate how many times longer it is than its width.
(2)timesTotal for this question: 2 marks
3.5B Water absorption by root hair cells
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Compare how water and nitrate ions enter a root hair cell.
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Total for this question: 2 marks
3.5B Water absorption by root hair cells
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Explain why root hairs do not have chloroplasts.
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Total for this question: 2 marks
3.5B Water absorption by root hair cells
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Uptake of potassium ions by barley roots Oxygen bubbled through solution Uptake / arbitrary units yes 62 no (nitrogen bubbled) 9 Illustrative data, not from a real investigation. Explain the results in the table.
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Total for this question: 3 marks
3.5B Water absorption by root hair cells
Exam question
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Uptake of potassium ions by barley roots Oxygen bubbled through solution Uptake / arbitrary units yes 62 no (nitrogen bubbled) 9 Illustrative data, not from a real investigation. Suggest why there was still some uptake without oxygen.
(2)Write your answer, then press Show model answer and tick each mark point your answer makes. Your answer is not saved.
Total for this question: 2 marks