Transpiration — Paper 1 · IGCSE Sciences - Co-ordinated (Double) 0654

8 Which conditions would cause the fastest rate of transpiration in a plant? humidity temperature A high high B high low C low high D low low

1 marks

Answer: C

This question in 0654/12 May/June 2013

6 Under which conditions will transpiration from a plant be fastest? temperature humidity A high high B high low C low high D low low

1 marks

Answer: B

This question in 0654/11 May/June 2016

7 Which conditions would cause the fastest rate of transpiration in a plant? temperature humidity A high high B high low C low high D low low

1 marks

Answer: B

This question in 0654/12 May/June 2016

5 A plant is growing in an open field. The table shows the weather conditions on four different days in the same week. On which day does the plant lose water the fastest? average average day rainfall / mm temperature / °C sunshine / hours humidity / % A Monday 5 95 20 5 B Tuesday 2 98 18 4 C Wednesday 2 90 22 8 D Thursday 0 75 25 7

1 marks

Answer: D

This question in 0654/11 Oct/Nov 2016

5 Four leaves of similar size are taken from the same tree and weighed. Each is then treated as shown. Which leaf loses mass fastest? A B C D covered with in humid air in front of in a box petroleum jelly a fan in the light in the dark

1 marks

Answer: C

This question in 0654/12 Oct/Nov 2016

5 The diagram shows two stages in an experiment on water uptake in two shoots from the same plant. Both shoots are kept in the light for one hour. glass jar wet cotton wool air bubble air bubble water water at start glass jar wet cotton wool air bubble water water air bubble after one hour What does the experiment show? A Humidity affects the rate of water uptake. B Light affects the rate of water uptake. C Plants lose more water at higher temperatures. D Plants take up water by their roots.

1 marks

Answer: A

This question in 0654/13 Oct/Nov 2016

6 Which conditions would cause the highest rate of transpiration in a plant? temperature wind speed A high high B high low C low high D low low

1 marks

Answer: A

This question in 0654/12 May/June 2017

7 Water enters root hair cells from the soil. What happens to most of this water after it has entered the cells? A It is used in photosynthesis in the root cells. B It moves out again when the soil is dry. C It moves to the leaves and is lost by transpiration. D The cell uses it in respiration.

1 marks

Answer: C

This question in 0654/11 Oct/Nov 2017

7 What pathway is taken by water molecules as they move through a plant? A mesophyll cells → xylem vessels → root cortex cells B root cortex cells → mesophyll cells → xylem vessels C root cortex cells → xylem vessels → mesophyll cells D xylem vessels → root cortex cells → mesophyll cells

1 marks

Answer: C

This question in 0654/12 May/June 2020

7 Under which conditions will transpiration from a plant be fastest? temperature humidity A high high B high low C low high D low low

1 marks

Answer: B

This question in 0654/11 Oct/Nov 2020

7 Under which conditions will transpiration from a plant be fastest? temperature humidity A high high B high low C low high D low low

1 marks

Answer: B

This question in 0654/12 Oct/Nov 2020

7 Under which conditions will transpiration from a plant be fastest? temperature humidity A high high B high low C low high D low low

1 marks

Answer: B

This question in 0654/13 Oct/Nov 2020

7 In which weather conditions is the rate of transpiration fastest? A cold and dry B cold and wet C warm and dry D warm and wet

1 marks

Answer: C

This question in 0654/12 Feb/March 2021

7 Transpiration is the process by which water moves through a plant. From which cells in the leaf does most of the water evaporate and through which structure is it lost as water vapour to the atmosphere? evaporates lost as water from vapour through A epidermis cuticle B epidermis stomata C mesophyll cuticle D mesophyll stomata

1 marks

Answer: D

This question in 0654/12 May/June 2021

7 Transpiration is the process by which water moves through a plant. From which cells in the leaf does most of the water evaporate and through which structure is it lost as water vapour to the atmosphere? evaporates lost as water from vapour through A epidermis cuticle B epidermis stomata C mesophyll cuticle D mesophyll stomata

1 marks

Answer: D

This question in 0654/13 May/June 2021

7 In which conditions will the rate of transpiration be greatest? A 10 C and high humidity B 10 C and low humidity C 30 C and high humidity D 30 C and low humidity

1 marks

Answer: D

This question in 0654/12 Feb/March 2022

7 Where does evaporation of water occur during transpiration? A from the air spaces through the stomata B from the phloem C from the surfaces of mesophyll cells D from the xylem

1 marks

Answer: C

This question in 0654/11 May/June 2022

7 Which changes increase the rate of transpiration? 1 increasing temperature 2 increasing humidity 3 decreasing temperature 4 decreasing humidity A 1 and 2 B 1 and 4 C 2 and 3 D 3 and 4

1 marks

Answer: B

This question in 0654/12 May/June 2022

7 Which changes increase the rate of transpiration? 1 increasing temperature 2 increasing humidity 3 decreasing temperature 4 decreasing humidity A 1 and 2 B 1 and 4 C 2 and 3 D 3 and 4

1 marks

Answer: B

This question in 0654/13 May/June 2022

7 The diagram shows a shoot at the start of an experiment investigating transpiration. The mass of the shoot, measuring cylinder, water and oil is measured. oil 85.84 g The apparatus is left for three days and then the mass recorded for a second time. Under which conditions would there be the most loss of mass from the apparatus? temperature humidity A high high B high low C low high D low low

1 marks

Answer: B

This question in 0654/12 May/June 2023

7 The diagram shows a shoot at the start of an experiment investigating transpiration. The mass of the shoot, measuring cylinder, water and oil is measured. oil 85.84 g The apparatus is left for three days and then the mass recorded for a second time. Under which conditions would there be the most loss of mass from the apparatus? temperature humidity A high high B high low C low high D low low

1 marks

Answer: B

This question in 0654/13 May/June 2023

5 Which conditions cause the highest rate of transpiration in a plant? temperature wind speed A high high B high low C low high D low low

1 marks

Answer: A

This question in 0654/12 Oct/Nov 2023

7 The rates of water uptake and loss are measured in four leaves. The results are shown in the table. Which leaf is least likely to wilt? rate of water uptake rate of water loss / mm3 per minute / mm3 per minute A 8 15 B 9 11 C 12 13 D 15 10

1 marks

Answer: D

This question in 0654/12 Oct/Nov 2023

5 The diagram shows the cross-section of part of a leaf with cells labelled W, X, Y and Z. X W Z Y Which cells lose most water and which cells absorb most carbon dioxide during the daytime? A W and X B X and Y C Y and Z D W and Z

1 marks

Answer: A

This question in 0654/12 May/June 2024

5 The diagram shows the cross-section of part of a leaf with cells labelled W, X, Y and Z. X W Z Y Which cells lose most water and which cells absorb most carbon dioxide during the daytime? A W and X B X and Y C Y and Z D W and Z

1 marks

Answer: A

This question in 0654/13 May/June 2024

7 The diagram shows an investigation into water transport in plants. flower with flower with white petals dyed petals water with water with coloured dye coloured dye start 8 hours later Which part of the stem transports the coloured dye from the test-tube to the petals of the flower? A mesophyll cells B phloem C root hair cells D xylem

1 marks

Answer: D

This question in 0654/12 Oct/Nov 2024

7 The diagram shows an investigation into water transport in plants. flower with flower with white petals dyed petals water with water with coloured dye coloured dye start 8 hours later Which part of the stem transports the coloured dye from the test-tube to the petals of the flower? A mesophyll cells B phloem C root hair cells D xylem

1 marks

Answer: D

This question in 0654/13 Oct/Nov 2024

4 Water is lost by evaporation from the cells of a leaf. Which process replaces this water? A assimilation B egestion C osmosis D transpiration

1 marks

Answer: C

This question in 0654/12 Feb/March 2025