Transpiration Experiment Worksheet

Science experiments lesson 15: How a plant drinks and gives out water · Set 84 · 40 questions

What you do (Roots in, leaves out): 1. Water the potted plant well. 2. Slip a clear plastic bag over a leafy branch. 3. Close it gently with a rubber band — not too tight. 4. Leave it in the sun for a few hours, then look for drops.

1. 1.🪴 Which of these is a job of the roots? (a) hold up the leaves (b) make food in sunlight (c) take in water from soil (d) make seeds
2. 2.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) both the same (b) the hot sunny day (c) neither of them (d) the cool cloudy day
3. 3.🪴 Which of these is a job of the leaves? (a) take in water from soil (b) make seeds (c) hold the plant in soil (d) give out water vapour
4. 4.True or false: vinegar is needed for the leafy bag test. (a) False (b) True
5. 5.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is kept the same? (a) sun or shade (b) the same kind of bag (c) amount of water drops
6. 6.True or false: a potted plant is not needed for the leafy bag test. (a) True (b) False
7. 7.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) exactly the same (b) much less water (c) much more water (d) it fills with soil
8. 8.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it flowers more (b) it wilts and droops (c) it grows faster (d) it turns blue
9. 9.True or false: a mirror is needed for the leafy bag test. (a) False (b) True
10. 10.True or false: a rubber band is needed for the leafy bag test. (a) True (b) False
11. 11.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a few hours (b) a magnet (c) a clear plastic bag (d) a rubber band
12. 12.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the kind of plant”? (a) we measure it (b) we change it (c) we keep it the same
13. 13.🧺 Do we need yeast for the leafy bag test? (a) needed (b) not needed
14. 14.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the same kind of bag”? (a) we change it (b) we keep it the same (c) we measure it
15. 15.🛟 Why must a plastic bag never go over anyone’s head? (a) it gets wet (b) it is too big (c) it can block breathing (d) it changes colour
16. 16.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a mirror (b) a few hours (c) sunlight (d) a rubber band
17. 17.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is kept the same? (a) sun or shade (b) amount of water drops (c) the kind of plant
18. 18.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is the one thing we change? (a) the size of the plant (b) the same kind of bag (c) amount of water drops (d) sun or shade
19. 19.True or false: a rubber band is not needed for the leafy bag test. (a) True (b) False
20. 20.🧺 Do we need sunlight for the leafy bag test? (a) needed (b) not needed
21. 21.True or false: sunlight is needed for the leafy bag test. (a) False (b) True
22. 22.🧺 Do we need a clear plastic bag for the leafy bag test? (a) not needed (b) needed
23. 23.🪴 Which part of a plant does this job: take in water from soil? (a) leaves (b) roots (c) stem (d) flower
24. 24.📘 What do we call plants giving out water vapour from their leaves? (a) transpiration (b) germination (c) digestion (d) reflection
25. 25.🧺 Do we need a battery cell for the leafy bag test? (a) not needed (b) needed
26. 26.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) nothing at all (b) tiny water drops (c) tiny insects (d) salt crystals
27. 27.🧺 Do we need a magnet for the leafy bag test? (a) not needed (b) needed
28. 28.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is what we measure? (a) the size of the plant (b) the time we wait (c) the same kind of bag (d) amount of water drops
29. 29.True or false: hold the plant in soil is a job of the leaves. (a) False (b) True
30. 30.🧺 Do we need a rubber band for the leafy bag test? (a) needed (b) not needed
31. 31.True or false: hold up the leaves is a job of the stem. (a) True (b) False
32. 32.🧺 Do we need a few hours for the leafy bag test? (a) needed (b) not needed
33. 33.🪴 Which part of a plant does this job: hold up the leaves? (a) leaves (b) stem (c) flower (d) roots
34. 34.True or false: a potted plant is needed for the leafy bag test. (a) True (b) False
35. 35.🧺 Which of these is needed for the leafy bag test? (a) yeast (b) a mirror (c) a potted plant (d) a magnet
36. 36.🪴 Which part of a plant does this job: hold the plant in soil? (a) leaves (b) stem (c) roots (d) flower
37. 37.True or false: hold the plant in soil is a job of the roots. (a) True (b) False
38. 38.🛟 How should the plastic bag be tied around the branch? (a) with a hot glue gun (b) with sharp wire (c) as tight as possible (d) gently, not too tight
39. 39.🧺 Do we need turmeric powder for the leafy bag test? (a) needed (b) not needed
40. 40.True or false: make food in sunlight is a job of the leaves. (a) True (b) False

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