Tropic responses — Paper 1 · IGCSE Biology (9-1) 0970

25 Gravitropism and phototropism are names given to specific plant growth responses. How do shoots and roots normally respond? direction of growth of shoots direction of growth of roots light gravity light gravity A towards away away towards B away towards towards away C towards away towards away D away towards away towards

1 marks

Answer: A

This question in 0970/11 May/June 2020

25 The diagram shows a plant shoot growing towards the light. light Which response is shown by the shoot of the plant? A gravitropism B photosynthesis C phototropism D reflex

1 marks

Answer: C

This question in 0970/12 May/June 2020

28 A seed is placed and grown on a rotating disc, as shown. seed pinned to the constantly rotating disc Which diagram shows the appearance of the seedling shoot after seven days? A B C D

1 marks

Answer: A

This question in 0970/12 Oct/Nov 2021

28 Which statement describes the plant response known as phototropism? A All parts of a plant grow towards light. B All parts of a plant grow away from light. C Plant shoots grow towards light. D Plant roots grow towards light.

1 marks

Answer: C

This question in 0970/11 May/June 2022

28 Which row about tropic responses is correct? gravitropism phototropism A root grows away from gravity shoot grows away from light source B root grows away from gravity shoot grows towards light source C root grows towards gravity shoot grows away from light source D root grows towards gravity shoot grows towards light source

1 marks

Answer: D

This question in 0970/12 Oct/Nov 2022

29 Which words complete the statements? Plant growth towards light is called … 1 … . When a plant shoot grows towards a light source, it is showing a … 2 … to light. Light acts as the … 3 … . 1 2 3 A movement response stimulus B movement stimulus response C phototropism response stimulus D phototropism stimulus response

1 marks

Answer: C

This question in 0970/11 May/June 2023

28 Which statements about tropisms in plants are correct? 1 Shoots grow towards light and away from gravity. 2 Shoots grow away from light and towards gravity. 3 Roots grow towards light and away from gravity. 4 Roots grow away from light and towards gravity. A 1 and 3 B 1 and 4 C 2 and 3 D 2 and 4

1 marks

Answer: B

This question in 0970/12 Oct/Nov 2023

27 A plant pot is placed on its side. Which diagram shows a plant with roots showing gravitropism and shoots showing phototropism? A B light light C D light light

1 marks

Answer: C

This question in 0970/12 May/June 2024

29 What is phototropism? A absorbing mineral ions B absorbing water C directional growth in response to gravity D directional growth in response to light

1 marks

Answer: D

This question in 0970/12 Oct/Nov 2024

27 Which statements describe correct examples of tropic responses? 1 Gravitropism is the growth of plant roots away from gravity. 2 Gravitropism is the growth of plant roots towards gravity. 3 Phototropism is the growth of plant shoots away from light. 4 Phototropism is the growth of plant shoots towards light. A 1 and 3 B 1 and 4 C 2 and 3 D 2 and 4

1 marks

Answer: D

This question in 0970/11 May/June 2025

25 A seedling was placed in a horizontal position. Which diagram shows the expected gravitropic responses in the seedling? A B root root shoot shoot C D shoot root root shoot

1 marks

Answer: C

This question in 0970/12 May/June 2025

21 A plant is placed on the floor in a room, near a window that lets in a lot of light. The shoot of the plant grows towards the window. What could explain this response? 1 growth away from gravity 2 growth towards gravity 3 growth away from the light source 4 growth towards the light source A 1 and 3 B 1 and 4 C 2 and 3 D 2 and 4

1 marks

Answer: B

This question in 0970/12 Oct/Nov 2025