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