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.🪴 Which of these is a job of the stem? (a) hold the plant in soil (b) make food in sunlight (c) carry water upward (d) make seeds
- 2.🪴 Which part of a plant does this job: take in water from soil? (a) roots (b) stem (c) flower (d) leaves
- 3.🧺 Which of these is needed for the leafy bag test? (a) a clear plastic bag (b) a mirror (c) a battery cell (d) a magnet
- 4.True or false: a few hours is needed for the leafy bag test. (a) False (b) True
- 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) the kind of plant (b) sun or shade (c) amount of water drops
- 6.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) sunlight (b) a mirror (c) a clear plastic bag (d) a potted plant
- 7.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) exactly the same (b) it fills with soil (c) much more water (d) much less water
- 8.🧺 Which of these is needed for the leafy bag test? (a) vinegar (b) turmeric powder (c) yeast (d) a few hours
- 9.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a few hours (b) a rubber band (c) sunlight (d) a magnet
- 10.🧺 Which of these is not needed for the leafy bag test? (a) a magnet (b) a potted plant (c) sunlight (d) a few hours
- 11.⚖️ 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 the one thing we change. (a) True (b) False
- 12.⚖️ 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 keep it the same (b) we measure it (c) we change it
- 13.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) neither of them (b) the cool cloudy day (c) both the same (d) the hot sunny day
- 14.⚖️ 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) sun or shade (b) amount of water drops (c) the size of the plant (d) the kind of plant
- 15.🧺 Do we need a few hours for the leafy bag test? (a) needed (b) not needed
- 16.🛟 How should the plastic bag be tied around the branch? (a) as tight as possible (b) with sharp wire (c) gently, not too tight (d) with a hot glue gun
- 17.🪴 Which part of a plant does this job: make seeds? (a) stem (b) roots (c) flower (d) leaves
- 18.🪴 Which part of a plant does this job: give out water vapour? (a) roots (b) flower (c) stem (d) leaves
- 19.⚖️ 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 kind of plant (b) amount of water drops (c) sun or shade (d) the time we wait
- 20.True or false: a battery cell is not needed for the leafy bag test. (a) False (b) True
- 21.True or false: a potted plant is not needed for the leafy bag test. (a) False (b) True
- 22.🧺 Do we need turmeric powder for the leafy bag test? (a) needed (b) not needed
- 23.True or false: take in water from soil is a job of the roots. (a) False (b) True
- 24.📘 What do we call plants giving out water vapour from their leaves? (a) reflection (b) digestion (c) germination (d) transpiration
- 25.True or false: a rubber band is needed for the leafy bag test. (a) True (b) False
- 26.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “amount of water drops”? (a) we change it (b) we keep it the same (c) we measure it
- 27.🧺 Do we need a rubber band for the leafy bag test? (a) not needed (b) needed
- 28.True or false: a magnet is not needed for the leafy bag test. (a) False (b) True
- 29.True or false: hold the plant in soil is a job of the flower. (a) False (b) True
- 30.⚖️ 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 size of the plant (b) sun or shade (c) amount of water drops
- 31.True or false: make food in sunlight is a job of the leaves. (a) True (b) False
- 32.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a few hours (b) yeast (c) a rubber band (d) a clear plastic bag
- 33.True or false: sunlight is not needed for the leafy bag test. (a) True (b) False
- 34.True or false: a battery cell is needed for the leafy bag test. (a) True (b) False
- 35.🧺 Do we need a magnet for the leafy bag test? (a) needed (b) not needed
- 36.True or false: a magnet is needed for the leafy bag test. (a) False (b) True
- 37.🧺 Do we need yeast for the leafy bag test? (a) not needed (b) needed
- 38.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) turmeric powder (b) a few hours (c) a potted plant (d) a clear plastic bag
- 39.True or false: a potted plant is needed for the leafy bag test. (a) True (b) False
- 40.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it wilts and droops (b) it turns blue (c) it flowers more (d) it grows faster
Answer key
- carry water upward
- roots
- a clear plastic bag
- True
- the kind of plant
- a mirror
- much less water
- a few hours
- a magnet
- a magnet
- False
- we change it
- the hot sunny day
- amount of water drops
- needed
- gently, not too tight
- flower
- leaves
- sun or shade
- True
- False
- not needed
- True
- transpiration
- True
- we measure it
- needed
- True
- False
- the size of the plant
- True
- yeast
- False
- False
- not needed
- False
- not needed
- turmeric powder
- True
- it wilts and droops
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