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 part of a plant does this job: hold the plant in soil? (a) flower (b) roots (c) leaves (d) stem
- 2.🧺 Do we need a rubber band for the leafy bag test? (a) not needed (b) needed
- 3.⚖️ 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 time we wait (b) amount of water drops (c) the same kind of bag (d) sun or shade
- 4.🪴 Which of these is a job of the leaves? (a) make food in sunlight (b) make seeds (c) hold up the leaves (d) take in water from soil
- 5.True or false: a potted plant is not needed for the leafy bag test. (a) False (b) True
- 6.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) the cool cloudy day (b) neither of them (c) the hot sunny day (d) both the same
- 7.🛟 Why must a plastic bag never go over anyone’s head? (a) it is too big (b) it gets wet (c) it changes colour (d) it can block breathing
- 8.True or false: vinegar is needed for the leafy bag test. (a) True (b) False
- 9.🧺 Do we need a clear plastic bag for the leafy bag test? (a) needed (b) not needed
- 10.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a battery cell (b) a rubber band (c) a potted plant (d) sunlight
- 11.🪴 Which part of a plant does this job: give out water vapour? (a) roots (b) leaves (c) stem (d) flower
- 12.True or false: a clear plastic bag is needed for the leafy bag test. (a) True (b) False
- 13.🧺 Do we need a magnet for the leafy bag test? (a) needed (b) not needed
- 14.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) much more water (b) exactly the same (c) it fills with soil (d) much less water
- 15.🪴 Which of these is a job of the roots? (a) carry water upward (b) take in water from soil (c) make food in sunlight (d) make seeds
- 16.🧺 Do we need yeast for the leafy bag test? (a) needed (b) not needed
- 17.🪴 Which of these is a job of the stem? (a) give out water vapour (b) carry water upward (c) take in water from soil (d) make seeds
- 18.📘 What do we call plants giving out water vapour from their leaves? (a) transpiration (b) germination (c) reflection (d) digestion
- 19.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: amount of water drops is what we measure. (a) True (b) False
- 20.🪴 Which part of a plant does this job: take in water from soil? (a) roots (b) flower (c) stem (d) leaves
- 21.True or false: carry water upward is a job of the stem. (a) False (b) True
- 22.True or false: a battery cell is needed for the leafy bag test. (a) True (b) False
- 23.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a mirror (b) a rubber band (c) a potted plant (d) sunlight
- 24.🪴 Which of these is a job of the leaves? (a) carry water upward (b) hold up the leaves (c) give out water vapour (d) take in water from soil
- 25.⚖️ 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 measure it (c) we keep it the same
- 26.⚖️ 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 what we measure. (a) False (b) True
- 27.⚖️ 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) True (b) False
- 28.True or false: make food in sunlight is a job of the stem. (a) False (b) True
- 29.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it turns blue (b) it flowers more (c) it grows faster (d) it wilts and droops
- 30.🪴 Which part of a plant does this job: hold up the leaves? (a) leaves (b) flower (c) stem (d) roots
- 31.True or false: turmeric powder is needed for the leafy bag test. (a) True (b) False
- 32.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: amount of water drops is the one thing we change. (a) False (b) True
- 33.🛟 How should the plastic bag be tied around the branch? (a) as tight as possible (b) gently, not too tight (c) with a hot glue gun (d) with sharp wire
- 34.True or false: make food in sunlight is a job of the leaves. (a) False (b) True
- 35.🧺 Do we need a mirror for the leafy bag test? (a) not needed (b) needed
- 36.🧺 Which of these is needed for the leafy bag test? (a) turmeric powder (b) a battery cell (c) vinegar (d) a potted plant
- 37.⚖️ 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
- 38.⚖️ 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 change it (b) we measure it (c) we keep it the same
- 39.🧺 Which of these is needed for the leafy bag test? (a) vinegar (b) a mirror (c) turmeric powder (d) a few hours
- 40.⚖️ 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 keep it the same (b) we change it (c) we measure it
Answer key
- roots
- needed
- sun or shade
- make food in sunlight
- False
- the hot sunny day
- it can block breathing
- False
- needed
- a battery cell
- leaves
- True
- not needed
- much less water
- take in water from soil
- not needed
- carry water upward
- transpiration
- True
- roots
- True
- False
- a mirror
- give out water vapour
- we measure it
- False
- True
- False
- it wilts and droops
- stem
- False
- False
- gently, not too tight
- True
- not needed
- a potted plant
- True
- we keep it the same
- a few hours
- we keep it the same
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