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