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 flower? (a) hold the plant in soil (b) make seeds (c) give out water vapour (d) hold up the leaves
- 2.⚖️ 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 same kind of bag (b) amount of water drops (c) the time we wait (d) sun or shade
- 3.⚖️ 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
- 4.🧺 Which of these is not needed for the leafy bag test? (a) a clear plastic bag (b) vinegar (c) a rubber band (d) sunlight
- 5.🧺 Do we need a potted plant for the leafy bag test? (a) needed (b) not needed
- 6.🛟 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
- 7.⚖️ 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 measure it (b) we change it (c) we keep it the same
- 8.True or false: a rubber band is needed for the leafy bag test. (a) False (b) True
- 9.🪴 Which of these is a job of the leaves? (a) hold the plant in soil (b) hold up the leaves (c) give out water vapour (d) carry water upward
- 10.⚖️ 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 the one thing we change. (a) True (b) False
- 11.True or false: a rubber band is not needed for the leafy bag test. (a) False (b) True
- 12.🛟 How should the plastic bag be tied around the branch? (a) with a hot glue gun (b) gently, not too tight (c) as tight as possible (d) with sharp wire
- 13.🧺 Do we need a mirror for the leafy bag test? (a) not needed (b) needed
- 14.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a potted plant (b) yeast (c) sunlight (d) a rubber band
- 15.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) it fills with soil (b) exactly the same (c) much less water (d) much more water
- 16.True or false: sunlight is needed for the leafy bag test. (a) True (b) False
- 17.🪴 Which part of a plant does this job: make food in sunlight? (a) roots (b) stem (c) flower (d) leaves
- 18.True or false: a potted plant is not needed for the leafy bag test. (a) True (b) False
- 19.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it wilts and droops (b) it turns blue (c) it grows faster (d) it flowers more
- 20.⚖️ 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 same kind of bag (b) the time we wait (c) the kind of plant (d) amount of water drops
- 21.🪴 Which of these is a job of the roots? (a) give out water vapour (b) hold the plant in soil (c) carry water upward (d) make food in sunlight
- 22.🧺 Which of these is needed for the leafy bag test? (a) a rubber band (b) yeast (c) a battery cell (d) a magnet
- 23.🧺 Do we need sunlight for the leafy bag test? (a) needed (b) not needed
- 24.🪴 Which part of a plant does this job: hold the plant in soil? (a) stem (b) leaves (c) roots (d) flower
- 25.🧺 Do we need turmeric powder for the leafy bag test? (a) needed (b) not needed
- 26.True or false: hold the plant in soil is a job of the roots. (a) True (b) False
- 27.🪴 Which part of a plant does this job: give out water vapour? (a) leaves (b) stem (c) roots (d) flower
- 28.True or false: yeast is needed for the leafy bag test. (a) True (b) False
- 29.⚖️ 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 keep it the same (c) we measure it
- 30.🪴 Which of these is a job of the stem? (a) take in water from soil (b) hold up the leaves (c) make food in sunlight (d) make seeds
- 31.🧺 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 magnet (d) a clear plastic bag
- 32.True or false: make food in sunlight is a job of the leaves. (a) False (b) True
- 33.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) tiny insects (b) tiny water drops (c) salt crystals (d) nothing at all
- 34.⚖️ 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 time we wait (b) sun or shade (c) amount of water drops
- 35.🧺 Do we need a few hours for the leafy bag test? (a) not needed (b) needed
- 36.🪴 Through which part does a plant take in water from the soil? (a) the fruits (b) the leaves (c) the flowers (d) the roots
- 37.True or false: a battery cell is needed for the leafy bag test. (a) True (b) False
- 38.🪴 Which part of a plant does this job: hold up the leaves? (a) leaves (b) stem (c) flower (d) roots
- 39.⚖️ 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) False (b) True
- 40.📘 What do we call plants giving out water vapour from their leaves? (a) reflection (b) germination (c) transpiration (d) digestion
Answer key
- make seeds
- sun or shade
- False
- vinegar
- needed
- it can block breathing
- we measure it
- True
- give out water vapour
- False
- False
- gently, not too tight
- not needed
- yeast
- much less water
- True
- leaves
- False
- it wilts and droops
- amount of water drops
- hold the plant in soil
- a rubber band
- needed
- roots
- not needed
- True
- leaves
- False
- we keep it the same
- hold up the leaves
- a magnet
- True
- tiny water drops
- the time we wait
- needed
- the roots
- False
- stem
- False
- transpiration
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