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.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it turns blue (b) it grows faster (c) it flowers more (d) it wilts and droops
- 2.⚖️ 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
- 3.⚖️ 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 measure it (c) we keep it the same
- 4.True or false: hold up the leaves is a job of the roots. (a) False (b) True
- 5.🪴 Which part of a plant does this job: hold the plant in soil? (a) flower (b) roots (c) leaves (d) stem
- 6.🪴 Which of these is a job of the flower? (a) take in water from soil (b) hold up the leaves (c) make seeds (d) give out water vapour
- 7.True or false: a clear plastic bag is not needed for the leafy bag test. (a) False (b) True
- 8.🪴 Through which part does a plant take in water from the soil? (a) the leaves (b) the fruits (c) the roots (d) the flowers
- 9.⚖️ 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
- 10.True or false: make food in sunlight is a job of the leaves. (a) True (b) False
- 11.⚖️ 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 measure it (b) we change it (c) we keep it the same
- 12.🧺 Do we need sunlight for the leafy bag test? (a) not needed (b) needed
- 13.True or false: make seeds is a job of the roots. (a) True (b) False
- 14.🔮 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
- 15.True or false: a rubber band is not needed for the leafy bag test. (a) True (b) False
- 16.True or false: make food in sunlight is a job of the flower. (a) False (b) True
- 17.📘 What do we call plants giving out water vapour from their leaves? (a) reflection (b) transpiration (c) germination (d) digestion
- 18.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) a few hours (c) a potted plant (d) yeast
- 19.🛟 Why must a plastic bag never go over anyone’s head? (a) it can block breathing (b) it gets wet (c) it changes colour (d) it is too big
- 20.🧺 Do we need a magnet for the leafy bag test? (a) not needed (b) needed
- 21.🛟 How should the plastic bag be tied around the branch? (a) as tight as possible (b) with sharp wire (c) gently, not too tight (d) with a hot glue gun
- 22.True or false: give out water vapour is a job of the stem. (a) True (b) False
- 23.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) vinegar (b) a rubber band (c) a potted plant (d) sunlight
- 24.True or false: carry water upward is a job of the flower. (a) True (b) False
- 25.🧺 Do we need a clear plastic bag for the leafy bag test? (a) needed (b) not needed
- 26.True or false: take in water from soil is a job of the roots. (a) True (b) False
- 27.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the time we wait is kept the same. (a) False (b) True
- 28.⚖️ 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) amount of water drops (b) the kind of plant (c) the size of the plant (d) sun or shade
- 29.🪴 Which of these is a job of the roots? (a) give out water vapour (b) take in water from soil (c) hold up the leaves (d) make food in sunlight
- 30.🧺 Do we need a battery cell for the leafy bag test? (a) needed (b) not needed
- 31.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a few hours (b) a clear plastic bag (c) sunlight (d) turmeric powder
- 32.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) a rubber band (c) sunlight (d) a mirror
- 33.🧺 Which of these is needed for the leafy bag test? (a) yeast (b) a battery cell (c) a mirror (d) a potted plant
- 34.🪴 Where did the water inside the bag come from? (a) the plastic (b) the leaves (c) the rain (d) the rubber band
- 35.⚖️ 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) False (b) True
- 36.🧺 Do we need yeast for the leafy bag test? (a) not needed (b) needed
- 37.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a potted plant (b) a few hours (c) a magnet (d) a clear plastic bag
- 38.True or false: make seeds is a job of the leaves. (a) False (b) True
- 39.🧺 Which of these is not needed for the leafy bag test? (a) a clear plastic bag (b) a rubber band (c) sunlight (d) a magnet
- 40.🧺 Do we need vinegar for the leafy bag test? (a) not needed (b) needed
Answer key
- it wilts and droops
- we change it
- we measure it
- False
- roots
- make seeds
- False
- the roots
- True
- True
- we keep it the same
- needed
- False
- the hot sunny day
- False
- False
- transpiration
- yeast
- it can block breathing
- not needed
- gently, not too tight
- False
- vinegar
- False
- needed
- True
- True
- sun or shade
- take in water from soil
- not needed
- turmeric powder
- a mirror
- a potted plant
- the leaves
- False
- not needed
- a magnet
- False
- a magnet
- not needed
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