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