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