a) Substances in the soil are taken up by plant root hair cells - Edexcel - GCSE Biology - Question 1 - 2012 - Paper 1
Question 1
a) Substances in the soil are taken up by plant root hair cells.
The diagram shows the direction of movement of two substances A and B across the cell membrane of a... show full transcript
Worked Solution & Example Answer:a) Substances in the soil are taken up by plant root hair cells - Edexcel - GCSE Biology - Question 1 - 2012 - Paper 1
Step 1
Name process X.
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Answer
Process X is known as diffusion or osmosis. This process involves the movement of substance A from an area of high concentration to an area of low concentration across the cell membrane.
Step 2
Name process Y.
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Answer
Process Y is referred to as active transport. This process moves substance B against its concentration gradient from low concentration to high concentration, requiring energy.
Step 3
Name the type of vessel that transports these mineral ions through the plant.
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Answer
The type of vessel that transports mineral ions in plants is called the xylem. The xylem vessels facilitate the movement of water and dissolved minerals from the roots to the rest of the plant.
