Photosynthesis — Paper 2 · IGCSE Sciences - Co-ordinated (9-1) 0973

5 What does chlorophyll enable plants to absorb? A carbon dioxide B energy from light C mineral salts D water

1 marks

Answer: B

This question in 0973/22 May/June 2019

5 Green plants need magnesium ions. Which plant process is limited when magnesium is deficient? A meiosis B photosynthesis C pollination D respiration

1 marks

Answer: B

This question in 0973/21 Oct/Nov 2019

5 In photosynthesis, how many molecules of glucose will be produced from twelve molecules of carbon dioxide? A 2 B 6 C 12 D 24

1 marks

Answer: A

This question in 0973/22 May/June 2020

2 Which structure in a plant cell makes organic nutrients? A cell membrane B cell wall C chloroplast D nucleus

1 marks

Answer: C

This question in 0973/21 Oct/Nov 2020

5 The balanced equation for photosynthesis is shown. light 6CO2 + 6H2O X + 6O2 chlorophyll What is X? A C6H12O6 B C6H12O12 C C12H6O6 D C12H12O2

1 marks

Answer: A

This question in 0973/21 May/June 2021

5 The balanced equation for photosynthesis is shown. light 6CO2 + 6H2O X + 6O2 chlorophyll What is X? A C6H12O6 B C6H12O12 C C12H6O6 D C12H12O2

1 marks

Answer: A

This question in 0973/22 May/June 2021

1 The list shows some requirements of living things. 1 light 2 carbon dioxide 3 water 4 mineral ions What do plants need to make glucose? A 1 and 2 only B 2 and 3 only C 3 and 4 D 1, 2 and 3

1 marks

Answer: D

This question in 0973/21 Oct/Nov 2021

5 What will cause plant leaves to turn yellow? A a lack of magnesium in the soil B a lack of starch in the leaves C a reduction in the rate of photosynthesis D a reduction in the rate of respiration

1 marks

Answer: A

This question in 0973/21 Oct/Nov 2021

5 Which graph shows the effect of light intensity on the rate of photosynthesis, if all other factors are kept constant? A B rate of rate of photosynthesis photosynthesis 0 0 0 light intensity 0 light intensity C D rate of rate of photosynthesis photosynthesis 0 0 0 light intensity 0 light intensity

1 marks

Answer: D

This question in 0973/21 May/June 2022

5 Which graph shows the effect of light intensity on the rate of photosynthesis, if all other factors are kept constant? A B rate of rate of photosynthesis photosynthesis 0 0 0 light intensity 0 light intensity C D rate of rate of photosynthesis photosynthesis 0 0 0 light intensity 0 light intensity

1 marks

Answer: D

This question in 0973/22 May/June 2022

1 What do plants need for their nutrition? A carbon dioxide, ions, organic compounds and light B carbon dioxide, ions, organic compounds and water C carbon dioxide, ions, light and water D carbon dioxide, organic compounds, light and water

1 marks

Answer: C

This question in 0973/21 Oct/Nov 2022

5 An experiment is set up to investigate the effect of changing the light intensity on the rate of photosynthesis. The lamp is moved in 10 cm intervals away from the plant and the number of bubbles of gas recorded in 60 seconds. move lamp away by 10 cm intervals up to 50 cm bubbles plant lamp beaker ruler What will be the result of moving the lamp further away from the beaker containing the plant? A The number of bubbles of carbon dioxide will decrease. B The number of bubbles of carbon dioxide will increase. C The number of bubbles of oxygen will decrease. D The number of bubbles of oxygen will increase.

1 marks

Answer: C

This question in 0973/21 May/June 2023

5 The graph shows the effect of increasing light intensity on the rate of photosynthesis of a submerged aquatic plant. rate of photosynthesis X light intensity Which factor is limiting the rate of photosynthesis at X? A carbon dioxide concentration B humidity C light intensity D temperature

1 marks

Answer: C

This question in 0973/22 May/June 2023

5 How many molecules of carbon dioxide are needed to produce six molecules of glucose? A 1 B 2 C 3 D 36

1 marks

Answer: D

This question in 0973/22 May/June 2024

5 The diagram shows a mesophyll cell. In which structure does photosynthesis take place? A D B C

1 marks

Answer: A

This question in 0973/21 Oct/Nov 2024

4 Which substance is essential to make chlorophyll? A calcium ions B cellulose C iron ions D magnesium ions

1 marks

Answer: D

This question in 0973/21 May/June 2025