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