B8.2· 23 questions · 23 marks · 28 min · 2017–2025· Multiple choice
Every Cambridge IGCSE Science - Combined Paper 2 question on water uptake, laid out as 6 A4 pages with the mark scheme below. Nothing is left out. Free to read, no account.




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6 / 6Answers below. Sit the paper first if you are practising.
Pastlit
Science - Combined 0653 · Water uptake — Paper 2
IGCSE · topical answer key — answer key (teacher use)
Question
Answer
Marks
| Question | Answer | Marks | From |
|---|---|---|---|
| 1 | B | 1 | 0653/21 May/June 2017 |
| 2 | B | 1 | 0653/22 May/June 2017 |
| 3 | B | 1 | 0653/23 May/June 2017 |
| 4 | C | 1 | 0653/21 Oct/Nov 2017 |
| 5 | B | 1 | 0653/22 Oct/Nov 2017 |
| 6 | B | 1 | 0653/22 Oct/Nov 2018 |
| 7 | D | 1 | 0653/23 Oct/Nov 2018 |
| 8 | C | 1 | 0653/21 May/June 2019 |
| 9 | A | 1 | 0653/21 Oct/Nov 2019 |
| 10 | B | 1 | 0653/21 May/June 2020 |
| 11 | B | 1 | 0653/22 May/June 2020 |
| 12 | A | 1 | 0653/22 Oct/Nov 2020 |
| 13 | B | 1 | 0653/21 May/June 2021 |
| 14 | B | 1 | 0653/22 May/June 2021 |
| 15 | B | 1 | 0653/23 May/June 2021 |
| 16 | D | 1 | 0653/22 May/June 2022 |
| 17 | A | 1 | 0653/23 May/June 2022 |
| 18 | C | 1 | 0653/22 Feb/March 2023 |
| 19 | B | 1 | 0653/21 May/June 2023 |
| 20 | A | 1 | 0653/22 Feb/March 2025 |
| 21 | D | 1 | 0653/21 May/June 2025 |
| 22 | C | 1 | 0653/22 May/June 2025 |
| 23 | C | 1 | 0653/22 Oct/Nov 2025 |
6 Which row matches the adaptation of a root hair cell to its function? adaptation function A large surface area uptake of water and glucose B large surface area uptake of water and ions C small surface area uptake of water and glucose D small surface area uptake of water and ions
1 marks
Answer: B
5 Which row matches the adaptation of a root hair cell to its function? adaptation function A large surface area uptake of water and glucose B large surface area uptake of water and ions C small surface area uptake of water and glucose D small surface area uptake of water and ions
1 marks
Answer: B
6 Which row matches the adaptation of a root hair cell to its function? adaptation function A large surface area uptake of water and glucose B large surface area uptake of water and ions C small surface area uptake of water and glucose D small surface area uptake of water and ions
1 marks
Answer: B
7 The diagram shows a plant cell. X What does structure X do? A decreases the surface area of the cell for water and ion absorption B decreases the surface area of the cell for water and sugar absorption C increases the surface area of the cell for water and ion absorption D increases the surface area of the cell for water and sugar absorption
1 marks
Answer: C
6 What are the functions of root hairs? uptake of ions uptake of sugar uptake of water 0 Oo WwW > v v x x x x v v KO 4
1 marks
Answer: B
6 The diagram shows a cross-section of a root hair cell. Y X Which row identifies the part of the cell with the larger surface area and its function? part of cell function A X water and glucose uptake B X water and ion uptake C Y water and glucose uptake D Y water and ion uptake
1 marks
Answer: B
6 The diagram shows a cross-section of a root hair cell. Which row describes the root hair cell and its function? animal cell or plant cell function A animal cell water and glucose uptake B animal cell water and ion uptake C plant cell water and glucose uptake D plant cell water and ion uptake
1 marks
Answer: D
5 The rate of water absorption into a plant is increased by the large surface area of which type of cell? A mesophyll B root cortex C root hair D xylem
1 marks
Answer: C
4 How are root hair cells adapted for absorption of water? A large surface area B thick cell wall C many chloroplasts D no nucleus
1 marks
Answer: A
2 Which row matches the adaptation of a root hair cell to its function? adaptation function A large surface area uptake of water and glucose B large surface area uptake of water and ions C small surface area uptake of water and glucose D small surface area uptake of water and ions
1 marks
Answer: B
3 Which row matches the adaptation of a root hair cell to its function? adaptation function A large surface area uptake of water and glucose B large surface area uptake of water and ions C small surface area uptake of water and glucose D small surface area uptake of water and ions
1 marks
Answer: B
5 The graph shows the uptake of water by root hair cells over many hours during a day. T water uptake by root hair cells 0 0 time What could have caused the change in the rate of uptake at T? A decrease in temperature B decrease in humidity C increase in light intensity D increase in temperature
1 marks
Answer: A
6 The diagram shows a cross-section of a root hair cell. Y X Which row identifies the part of the cell with the larger surface area and the correct function? part of cell function A X water and glucose uptake B X water and ion uptake C Y water and glucose uptake D Y water and ion uptake
1 marks
Answer: B
7 The diagram shows a cross-section of a root hair cell. Y X Which row identifies the part of the cell with the larger surface area and the correct function? part of cell function A X water and glucose uptake B X water and ion uptake C Y water and glucose uptake D Y water and ion uptake
1 marks
Answer: B
7 The diagram shows a cross-section of a root hair cell. Y X Which row identifies the part of the cell with the larger surface area and the correct function? part of cell function A X water and glucose uptake B X water and ion uptake C Y water and glucose uptake D Y water and ion uptake
1 marks
Answer: B
6 What is a role of root hair cells? A to decrease surface area, to decrease loss of water B to decrease surface area, to increase uptake of water C to increase surface area, to decrease loss of water D to increase surface area, to increase uptake of water
1 marks
Answer: D
7 Which statement about root hair cells is correct? A They are present in large numbers to increase the absorption of water. B They are only present in young seedlings before major roots grow. C They are branched to help prevent the wind dislodging a plant. D They have a large surface area to allow carbon dioxide uptake.
1 marks
Answer: A
5 Which statement describes a feature of the root hair cells of plants? A They help the roots to move between soil particles in the ground. B They have fully permeable cell membranes to improve nitrate ion entry. C They have large surface areas to increase water uptake by osmosis. D They have partially permeable cell walls to give the cells more strength.
1 marks
Answer: C
7 Which row matches the adaptation of a root hair cell to its function? adaptation function A large surface area uptake of water and glucose B large surface area uptake of water and ions C small surface area uptake of water and glucose D small surface area uptake of water and ions
1 marks
Answer: B
7 What is a function of the large surface area of root hair cells? A to increase the uptake of mineral ions by active transport B to increase the uptake of water by active transport C to decrease the rate of transpiration by diffusion D to decrease the uptake of oxygen by diffusion
1 marks
Answer: A
2 The diagrams show four root hair cells. Each cell is surrounded by soil with the same volume of water present. Which root hair cell absorbs water the most rapidly? A B soil temperature 10 °C soil temperature 10 °C C D soil temperature 20 °C soil temperature 20 °C
1 marks
Answer: D
9 Which statement explains why root hair cells have a long, thin shape? A They are squeezed into this shape as they grow between soil particles. B It is the most efficient shape for taking up food such as glucose. C It provides a large surface area for diffusion of water. D The narrow diameter allows them to gain carbon dioxide from between soil particles.
1 marks
Answer: C
9 Which type of plant cell has a large surface area to increase the uptake of water? A mesophyll B root cortex C root hair D xylem
1 marks
Answer: C