Transpiration Experiment Worksheet

Science experiments lesson 15: How a plant drinks and gives out water · Set 300 · 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.True or false: vinegar is needed for the leafy bag test. (a) True (b) False
2. 2.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) nothing at all (b) tiny insects (c) salt crystals (d) tiny water drops
3. 3.🪴 Which part of a plant does this job: take in water from soil? (a) leaves (b) roots (c) stem (d) flower
4. 4.True or false: give out water vapour is a job of the stem. (a) False (b) True
5. 5.True or false: hold up the leaves is a job of the flower. (a) True (b) False
6. 6.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the size of the plant is kept the same. (a) False (b) True
7. 7.True or false: carry water upward is a job of the stem. (a) False (b) True
8. 8.⚖️ 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) amount of water drops (c) the same kind of bag (d) the time we wait
9. 9.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) sunlight (b) a battery cell (c) a few hours (d) a clear plastic bag
10. 10.🛟 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
11. 11.🧺 Which of these is needed for the leafy bag test? (a) a magnet (b) a battery cell (c) a clear plastic bag (d) a mirror
12. 12.🪴 Which of these is a job of the roots? (a) make seeds (b) take in water from soil (c) carry water upward (d) hold up the leaves
13. 13.🪴 Which part of a plant does this job: give out water vapour? (a) roots (b) flower (c) stem (d) leaves
14. 14.🛟 Why must a plastic bag never go over anyone’s head? (a) it changes colour (b) it can block breathing (c) it gets wet (d) it is too big
15. 15.True or false: give out water vapour is a job of the roots. (a) False (b) True
16. 16.🪴 Which of these is a job of the leaves? (a) take in water from soil (b) make food in sunlight (c) hold up the leaves (d) make seeds
17. 17.True or false: sunlight is not needed for the leafy bag test. (a) True (b) False
18. 18.True or false: a clear plastic bag is not needed for the leafy bag test. (a) True (b) False
19. 19.🔮 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
20. 20.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) vinegar (b) a few hours (c) a rubber band (d) a clear plastic bag
21. 21.True or false: hold the plant in soil is a job of the leaves. (a) True (b) False
22. 22.True or false: a clear plastic bag is needed for the leafy bag test. (a) True (b) False
23. 23.🪴 Which part of a plant does this job: make seeds? (a) flower (b) stem (c) roots (d) leaves
24. 24.📘 Leaves have tiny holes that let out water vapour. What are they called? (a) veins (b) petals (c) roots (d) stomata
25. 25.🪴 Which of these is a job of the stem? (a) carry water upward (b) take in water from soil (c) give out water vapour (d) make seeds
26. 26.🧺 Which of these is needed for the leafy bag test? (a) a mirror (b) a potted plant (c) turmeric powder (d) vinegar
27. 27.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: sun or shade is the one thing we change. (a) False (b) True
28. 28.🧺 Do we need sunlight for the leafy bag test? (a) needed (b) not needed
29. 29.🧺 Which of these is not needed for the leafy bag test? (a) yeast (b) a rubber band (c) a clear plastic bag (d) sunlight
30. 30.⚖️ 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 measure it (b) we change it (c) we keep it the same
31. 31.🪴 Where did the water inside the bag come from? (a) the plastic (b) the rubber band (c) the rain (d) the leaves
32. 32.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the same kind of bag is kept the same. (a) False (b) True
33. 33.True or false: make food in sunlight is a job of the leaves. (a) False (b) True
34. 34.⚖️ 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 same kind of bag (b) sun or shade (c) the size of the plant (d) amount of water drops
35. 35.True or false: make seeds is a job of the leaves. (a) True (b) False
36. 36.⚖️ 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) the same kind of bag (b) amount of water drops (c) sun or shade
37. 37.🧺 Do we need turmeric powder for the leafy bag test? (a) needed (b) not needed
38. 38.True or false: a battery cell is needed for the leafy bag test. (a) True (b) False
39. 39.True or false: make seeds is a job of the stem. (a) True (b) False
40. 40.📘 What do we call plants giving out water vapour from their leaves? (a) germination (b) digestion (c) reflection (d) transpiration

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