Transpiration Experiment Worksheet
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.
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- 1.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the size of the plant”? (a) we change it (b) we keep it the same (c) we measure it
- 2.True or false: make food in sunlight is a job of the stem. (a) True (b) False
- 3.🪴 Which part of a plant does this job: hold up the leaves? (a) roots (b) flower (c) leaves (d) stem
- 4.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “sun or shade”? (a) we measure it (b) we change it (c) we keep it the same
- 5.True or false: give out water vapour is a job of the roots. (a) True (b) False
- 6.🛟 Why must a plastic bag never go over anyone’s head? (a) it changes colour (b) it gets wet (c) it is too big (d) it can block breathing
- 7.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a rubber band (b) sunlight (c) turmeric powder (d) a potted plant
- 8.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) sunlight (c) a few hours (d) yeast
- 9.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it wilts and droops (b) it turns blue (c) it grows faster (d) it flowers more
- 10.📘 What do we call plants giving out water vapour from their leaves? (a) transpiration (b) digestion (c) germination (d) reflection
- 11.🪴 Which of these is a job of the stem? (a) make seeds (b) hold up the leaves (c) give out water vapour (d) make food in sunlight
- 12.🪴 Which of these is a job of the flower? (a) take in water from soil (b) hold up the leaves (c) hold the plant in soil (d) make seeds
- 13.⚖️ 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 time we wait (d) the kind of plant
- 14.🧺 Do we need sunlight for the leafy bag test? (a) not needed (b) needed
- 15.True or false: a rubber band is needed for the leafy bag test. (a) False (b) True
- 16.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the time we wait is kept the same. (a) False (b) True
- 17.True or false: yeast is needed for the leafy bag test. (a) True (b) False
- 18.🪴 Which part of a plant does this job: give out water vapour? (a) stem (b) flower (c) leaves (d) roots
- 19.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the time we wait”? (a) we change it (b) we keep it the same (c) we measure it
- 20.🧺 Which of these is not needed for the leafy bag test? (a) a potted plant (b) a mirror (c) a rubber band (d) a few hours
- 21.⚖️ 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
- 22.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a few hours (b) a mirror (c) sunlight (d) a potted plant
- 23.🧺 Do we need a potted plant for the leafy bag test? (a) needed (b) not needed
- 24.True or false: turmeric powder is not needed for the leafy bag test. (a) True (b) False
- 25.🪴 Which of these is a job of the roots? (a) give out water vapour (b) carry water upward (c) hold the plant in soil (d) make seeds
- 26.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the kind of plant is what we measure. (a) True (b) False
- 27.⚖️ 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) sun or shade (b) amount of water drops (c) the same kind of bag (d) the time we wait
- 28.⚖️ 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) True (b) False
- 29.🪴 Which part of a plant does this job: carry water upward? (a) leaves (b) flower (c) stem (d) roots
- 30.🛟 How should the plastic bag be tied around the branch? (a) as tight as possible (b) with a hot glue gun (c) gently, not too tight (d) with sharp wire
- 31.True or false: carry water upward is a job of the stem. (a) True (b) False
- 32.True or false: yeast is not needed for the leafy bag test. (a) True (b) False
- 33.🧺 Which of these is not needed for the leafy bag test? (a) a clear plastic bag (b) a rubber band (c) vinegar (d) a potted plant
- 34.True or false: carry water upward is a job of the leaves. (a) True (b) False
- 35.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) sunlight (b) a magnet (c) a rubber band (d) a few hours
- 36.True or false: sunlight is needed for the leafy bag test. (a) False (b) True
- 37.🪴 Which part of a plant does this job: hold the plant in soil? (a) leaves (b) flower (c) roots (d) stem
- 38.True or false: a mirror is needed for the leafy bag test. (a) True (b) False
- 39.⚖️ 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 keep it the same (c) we change it
- 40.🪴 Where did the water inside the bag come from? (a) the rain (b) the plastic (c) the leaves (d) the rubber band
Answer key
- we keep it the same
- False
- stem
- we change it
- False
- it can block breathing
- turmeric powder
- yeast
- it wilts and droops
- transpiration
- hold up the leaves
- make seeds
- amount of water drops
- needed
- True
- True
- False
- leaves
- we keep it the same
- a mirror
- True
- a mirror
- needed
- True
- hold the plant in soil
- False
- sun or shade
- True
- stem
- gently, not too tight
- True
- True
- vinegar
- False
- a magnet
- True
- roots
- False
- we keep it the same
- the leaves
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