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Question 1 of 20
1. Question
1 point(s)The equation for photosynthesis is shown.
……1…… + ……2…… → glucose + ……3……
Which words correctly complete gaps 1, 2 and 3?1 2 3 A carbon dioxide light oxygen B carbon dioxide water oxygen C oxygen light carbon dioxide D oxygen water carbon dioxide CorrectIncorrect -
Question 2 of 20
2. Question
1 point(s)Which part of a plant root hair is partially permeable?
CorrectIncorrect -
Question 3 of 20
3. Question
1 point(s)An experiment is set up as shown.
The green indicator turns yellow when the concentration of carbon dioxide increases. The green indicator turns blue when the concentration of carbon dioxide decreases.
After several hours, the indicator in test-tube X turned blue. The indicator in test-tube Y remained green.
Which process caused the colour change?CorrectIncorrect -
Question 4 of 20
4. Question
1 point(s)Why do plants need nitrate ions?
CorrectIncorrect -
Question 5 of 20
5. Question
1 point(s)The diagram shows a section through a leaf.
What are structures P, Q, R and S?P Q R S A chloroplast phloem palisade tissue xylem B cuticle xylem chloroplast stoma C phloem palisade tissue cuticle stoma D xylem chloroplast phloem cuticle CorrectIncorrect -
Question 6 of 20
6. Question
1 point(s)The diagram shows the pathway of water from the soil through a plant.
soil → X → Y → Z → mesophyll cells
Which cells are represented by X, Y and Z?X Y Z A root hair cells root cortex cells xylem B root hair cells xylem root cortex cells C xylem root cortex cells root hair cells D xylem root hair cells root cortex cells CorrectIncorrect -
Question 7 of 20
7. Question
1 point(s)What will not affect the rate of transpiration?
CorrectIncorrect -
Question 8 of 20
8. Question
1 point(s)The diagram shows an experiment to investigate the balance between respiration and photosynthesis.
In which tube are photosynthesis and respiration taking place at the same time?
CorrectIncorrect -
Question 9 of 20
9. Question
1 point(s)The diagram shows a cross-section of a leaf as seen under a microscope.
Which structure is a palisade mesophyll cell?
CorrectIncorrect -
Question 10 of 20
10. Question
1 point(s)Some gardeners use Epsom salts (magnesium sulfate) as a fertiliser for their plants. Epsom salts release magnesium ions into the soil.
How would this benefit the plants?CorrectIncorrect -
Question 11 of 20
11. Question
1 point(s)The diagrams show the structure of four different cells from a plant.
Which cell is from the upper epidermis of a leaf?
CorrectIncorrect -
Question 12 of 20
12. Question
1 point(s)In what form does a plant absorb and lose water?
absorbs loses A liquid liquid B liquid vapour C vapour liquid D vapour vapour CorrectIncorrect -
Question 13 of 20
13. Question
1 point(s)The diagram shows a plant shoot and the same shoot six hours later.
Which change in environmental conditions could cause this change in the appearance of the shoot?CorrectIncorrect -
Question 14 of 20
14. Question
1 point(s)The diagram shows a cross-section through a plant stem.
Q shows the part that is stained red when the stem is placed in water containing a red dye.
What is found at Q?CorrectIncorrect -
Question 15 of 20
15. Question
1 point(s)Some liquid is collected from the xylem in the stem of a plant.
What is present in the liquid?CorrectIncorrect -
Question 16 of 20
16. Question
1 point(s)What is a function of phloem?
CorrectIncorrect -
Question 17 of 20
17. Question
1 point(s)What is formed first in a leaf as a result of photosynthesis?
CorrectIncorrect -
Question 18 of 20
18. Question
1 point(s)The diagram shows how the rate of photosynthesis varies with light intensity.
The four curves show different conditions of temperature and carbon dioxide concentration.
What limits the rate of photosynthesis at point P?light intensity carbon dioxide
concentrationtemperature A ✓ ✓ x B ✓ x x C x ✓ ✓ D x x ✓ CorrectIncorrect -
Question 19 of 20
19. Question
1 point(s)The diagram shows part of a leaf in cross-section.
What shows the correct function of a numbered part?part functions A 1 photosynthesis B 2 gaseous exchange C 3 transport of water from the root D 4 transport of sugars to the root CorrectIncorrect -
Question 20 of 20
20. Question
1 point(s)Curve X on the graph shows the effect of light intensity on the rate of photosynthesis.
How have the conditions changed to produce curve Y?CorrectIncorrect
