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: give out water vapour is a job of the roots. (a) True (b) False
- 2.🧺 Do we need a magnet for the leafy bag test? (a) needed (b) not needed
- 3.🧺 Which of these is needed for the leafy bag test? (a) yeast (b) turmeric powder (c) a clear plastic bag (d) a magnet
- 4.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) much more water (b) much less water (c) exactly the same (d) it fills with soil
- 5.🪴 Which part of a plant does this job: take in water from soil? (a) leaves (b) stem (c) roots (d) flower
- 6.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a potted plant (b) vinegar (c) a few hours (d) a rubber band
- 7.🧺 Which of these is needed for the leafy bag test? (a) a magnet (b) a potted plant (c) turmeric powder (d) a battery cell
- 8.🛟 Why must a plastic bag never go over anyone’s head? (a) it is too big (b) it gets wet (c) it can block breathing (d) it changes colour
- 9.⚖️ 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
- 10.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a mirror (b) a potted plant (c) a few hours (d) sunlight
- 11.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) salt crystals (b) tiny water drops (c) nothing at all (d) tiny insects
- 12.⚖️ 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) the kind of plant (c) amount of water drops (d) sun or shade
- 13.True or false: a few hours is needed for the leafy bag test. (a) True (b) False
- 14.⚖️ 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
- 15.True or false: a rubber band is needed for the leafy bag test. (a) True (b) False
- 16.🧺 Do we need a rubber band for the leafy bag test? (a) not needed (b) needed
- 17.🪴 Which of these is a job of the stem? (a) take in water from soil (b) make food in sunlight (c) carry water upward (d) hold the plant in soil
- 18.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) sunlight (b) a rubber band (c) a battery cell (d) a few hours
- 19.True or false: vinegar is needed for the leafy bag test. (a) False (b) True
- 20.🪴 Which of these is a job of the leaves? (a) carry water upward (b) hold up the leaves (c) take in water from soil (d) make food in sunlight
- 21.🧺 Which of these is not needed for the leafy bag test? (a) a clear plastic bag (b) a few hours (c) turmeric powder (d) sunlight
- 22.🪴 Which part of a plant does this job: make food in sunlight? (a) roots (b) stem (c) flower (d) leaves
- 23.True or false: take in water from soil is a job of the flower. (a) False (b) True
- 24.🧺 Do we need sunlight for the leafy bag test? (a) needed (b) not needed
- 25.⚖️ 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 what we measure. (a) True (b) False
- 26.🛟 How should the plastic bag be tied around the branch? (a) as tight as possible (b) with sharp wire (c) with a hot glue gun (d) gently, not too tight
- 27.📘 What do we call plants giving out water vapour from their leaves? (a) digestion (b) germination (c) transpiration (d) reflection
- 28.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) the cool cloudy day (b) the hot sunny day (c) neither of them (d) both the same
- 29.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a few hours (b) a rubber band (c) a potted plant (d) yeast
- 30.🧺 Do we need a clear plastic bag for the leafy bag test? (a) not needed (b) needed
- 31.⚖️ 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 change it (b) we keep it the same (c) we measure it
- 32.🧺 Which of these is needed for the leafy bag test? (a) yeast (b) a battery cell (c) turmeric powder (d) a rubber band
- 33.⚖️ 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 change it (b) we keep it the same (c) we measure it
- 34.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) a magnet (c) sunlight (d) a rubber band
- 35.True or false: turmeric powder is not needed for the leafy bag test. (a) True (b) False
- 36.⚖️ 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 size of the plant (b) sun or shade (c) the time we wait (d) the same kind of bag
- 37.⚖️ 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) False (b) True
- 38.True or false: a magnet is not needed for the leafy bag test. (a) True (b) False
- 39.True or false: sunlight is needed for the leafy bag test. (a) True (b) False
- 40.True or false: yeast is needed for the leafy bag test. (a) False (b) True
Answer key
- False
- not needed
- a clear plastic bag
- much less water
- roots
- vinegar
- a potted plant
- it can block breathing
- True
- a mirror
- tiny water drops
- amount of water drops
- True
- we measure it
- True
- needed
- carry water upward
- a battery cell
- False
- make food in sunlight
- turmeric powder
- leaves
- False
- needed
- False
- gently, not too tight
- transpiration
- the hot sunny day
- yeast
- needed
- we keep it the same
- a rubber band
- we change it
- a magnet
- True
- sun or shade
- True
- True
- True
- False
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