Transpiration — Paper 2 · IGCSE Science - Combined 0653

5 Which statement describes transpiration? A evaporation of water from leaf mesophyll cells B intake of water from the atmosphere through the stomata C transport of water through xylem tissue to the leaves D uptake of water by root hairs in the soil

1 marks

Answer: A

This question in 0653/22 Feb/March 2017

9 The diagram shows a seedling with its root and shoot horizontal. The seedling is kept moist for three days. Where will the greatest concentration of auxin be found? C B root A D shoot

1 marks

Answer: A

This question in 0653/22 May/June 2017

6 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

This question in 0653/23 Oct/Nov 2017

7 The graph shows the rate of water loss from a plant during daylight hours. X rate of water loss / g per hour Y 0 0 time / hours What could cause the change in the rate of water loss between point X and point Y? A The air becomes cooler. B The air becomes drier. C The day becomes sunnier. D The stomata open wider.

1 marks

Answer: A

This question in 0653/22 Feb/March 2018

5 The diagram shows a plant in a controlled environment. controlled environment The list gives three ways in which the environment can be altered. 1 humidity increased 2 __ light intensity increased 3 temperature increased Which changes will cause an increase in the rate of transpiration of the plant? 1 2 3 A v v x B v x x Cc x x v D x v v

1 marks

Answer: D

This question in 0653/21 May/June 2018

6 What will give the lowest rate of transpiration? 1 high temperature 2 high humidity in the atmosphere 3 high rate of movement of water molecules A 1 only B 2 only C 1 and 3 D 2 and 3

1 marks

Answer: B

This question in 0653/22 Feb/March 2019

5 The table shows how humidity may affect the rate of diffusion of water vapour from a plant to the surrounding air. Which row will result in the highest rate of transpiration? diffusion gradient humidity for water A high low B high high C low low D low high

1 marks

Answer: D

This question in 0653/22 Feb/March 2020

7 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

This question in 0653/21 Oct/Nov 2020

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

This question in 0653/22 Oct/Nov 2020

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

This question in 0653/23 Oct/Nov 2020

8 Which statement explains why the rate of transpiration changes on a hot dry day? A a decrease in diffusion of water vapour through the stomata B a decrease in evaporation of water vapour through the stomata C an increase in evaporation of water from the mesophyll cells D a decrease in diffusion of water from the mesophyll cells

1 marks

Answer: C

This question in 0653/22 Feb/March 2021

9 A plant shoot is illuminated from one side only. What collects on the shaded side of the plant shoot? A auxin B chlorophyll C glucose D starch

1 marks

Answer: A

This question in 0653/22 Oct/Nov 2021

7 Which conditions cause plants to lose most mass by transpiration? humidity temperature A high high B high low C low high D low low

1 marks

Answer: C

This question in 0653/23 Oct/Nov 2021

9 A plant shoot is illuminated from one side only. What collects on the shaded side of the plant shoot? A auxin B chlorophyll C glucose D starch

1 marks

Answer: A

This question in 0653/23 Oct/Nov 2021

6 The diagram shows a plant in a container of water. The layer of oil stops the water in the container from evaporating. oil container water The initial mass of the container and its contents is 296 g. After two hours, the mass of the container and its contents is 292 g. What is the rate of transpiration in this time? A 148 g of water per hour B 146 g of water per hour C 4 g of water per hour D 2 g of water per hour

1 marks

Answer: D

This question in 0653/22 Feb/March 2022

6 A student investigates factors affecting the rate of transpiration in a plant. Which row shows the correct effects on the rates of transpiration? increase temperature decrease humidity A decreases decreases B decreases increases C increases decreases D increases increases

1 marks

Answer: D

This question in 0653/21 Oct/Nov 2022

7 The table shows two processes that are involved in transpiration. What happens to the rate of these processes in high humidity? diffusion of evaporation of water vapour water from surfaces through stomata of mesophyll cells A rate decreases rate increases B rate decreases rate decreases C rate increases rate increases D rate increases rate decreases

1 marks

Answer: B

This question in 0653/22 May/June 2023

6 The list gives two ways in which an environment changes. 1 humidity increases 2 temperature increases Which changes cause an increase in the rate of transpiration of plants? 1 2 A v v key B Jv x ¥ = increase in rate of transpiration Cc x v X = decrease in rate of transpiration D x x

1 marks

Answer: C

This question in 0653/23 May/June 2023

6 Which combination of humidity and temperature would give the lowest transpiration rate in a plant? humidity temperature A low warm B low cool C high warm D high cool

1 marks

Answer: D

This question in 0653/22 Oct/Nov 2023

7 From which part of a leaf does water evaporate during transpiration? A the cuticle B the mesophyll cells C the upper epidermis D the stomata

1 marks

Answer: B

This question in 0653/23 Oct/Nov 2023

7 Which changes will increase transpiration rate? humidity temperature A decrease decrease B decrease increase C increase decrease D increase increase

1 marks

Answer: B

This question in 0653/23 May/June 2024

7 Which row is correct for the transport of water during transpiration in plants? direction tissue of transport A phloem leaf to root B phloem root to leaf C xylem leaf to root D xylem root to leaf

1 marks

Answer: D

This question in 0653/21 Oct/Nov 2024

10 Water moves through the stomata of leaves during transpiration. Which row shows the direction of water movement and the form of the water? direction form A into the leaf liquid B into the leaf vapour C out of the leaf vapour D out of the leaf liquid

1 marks

Answer: C

This question in 0653/23 May/June 2025

7 A student investigates transpiration in four small plants of the same species. The student places each plant at a different distance away from an electric fan. All other conditions are kept the same. The table shows the mass of each plant at the beginning of the investigation and after 48 hours. Which plant is placed the furthest distance away from the electric fan? mass of plant / g at beginning after 48 hours A 295 255 B 312 262 C 300 247 D 280 235

1 marks

Answer: A

This question in 0653/23 Oct/Nov 2025