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 roots? (a) make seeds (b) hold up the leaves (c) carry water upward (d) hold the plant in soil
- 2.🛟 How should the plastic bag be tied around the branch? (a) with sharp wire (b) gently, not too tight (c) with a hot glue gun (d) as tight as possible
- 3.🛟 Why must a plastic bag never go over anyone’s head? (a) it is too big (b) it can block breathing (c) it gets wet (d) it changes colour
- 4.🔮 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
- 5.🪴 Which part of a plant does this job: give out water vapour? (a) leaves (b) roots (c) stem (d) flower
- 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.⚖️ 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 same kind of bag (b) amount of water drops (c) sun or shade
- 8.⚖️ 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 measure it (b) we change it (c) we keep it the same
- 9.🪴 Which part of a plant does this job: take in water from soil? (a) stem (b) flower (c) leaves (d) roots
- 10.⚖️ 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
- 11.🔮 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
- 12.🔮 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
- 13.🪴 Which of these is a job of the leaves? (a) hold up the leaves (b) take in water from soil (c) give out water vapour (d) carry water upward
- 14.True or false: make seeds is a job of the roots. (a) True (b) False
- 15.True or false: give out water vapour is a job of the leaves. (a) True (b) False
- 16.🧺 Do we need a rubber band for the leafy bag test? (a) needed (b) not needed
- 17.True or false: a magnet is not needed for the leafy bag test. (a) True (b) False
- 18.🪴 Which part of a plant does this job: make seeds? (a) stem (b) flower (c) roots (d) leaves
- 19.⚖️ 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 keep it the same (b) we measure it (c) we change it
- 20.🪴 Which of these is a job of the flower? (a) hold up the leaves (b) make seeds (c) hold the plant in soil (d) carry water upward
- 21.🧺 Which of these is not needed for the leafy bag test? (a) a rubber band (b) a magnet (c) a few hours (d) a potted plant
- 22.🧺 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 battery cell (d) a clear plastic bag
- 23.🧺 Which of these is needed for the leafy bag test? (a) turmeric powder (b) a battery cell (c) a few hours (d) a magnet
- 24.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a potted plant (b) sunlight (c) a clear plastic bag (d) yeast
- 25.🪴 Which part of a plant does this job: make food in sunlight? (a) stem (b) flower (c) leaves (d) roots
- 26.🪴 Which part of a plant does this job: hold the plant in soil? (a) stem (b) flower (c) leaves (d) roots
- 27.⚖️ 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
- 28.True or false: take in water from soil is a job of the stem. (a) True (b) False
- 29.📘 What do we call plants giving out water vapour from their leaves? (a) digestion (b) reflection (c) transpiration (d) germination
- 30.🧺 Do we need yeast 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 same kind of bag is what we measure. (a) True (b) False
- 32.⚖️ 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 size of the plant
- 33.True or false: a few hours is needed for the leafy bag test. (a) False (b) True
- 34.🧺 Which of these is needed for the leafy bag test? (a) a mirror (b) a magnet (c) a rubber band (d) turmeric powder
- 35.⚖️ 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 time we wait (c) sun or shade (d) the same kind of bag
- 36.🪴 Which of these is a job of the roots? (a) make seeds (b) take in water from soil (c) make food in sunlight (d) carry water upward
- 37.🧺 Do we need turmeric powder for the leafy bag test? (a) not needed (b) needed
- 38.🪴 Which of these is a job of the stem? (a) make food in sunlight (b) hold up the leaves (c) hold the plant in soil (d) make seeds
- 39.True or false: hold the plant in soil is a job of the roots. (a) False (b) True
- 40.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) sunlight (b) a few hours (c) a magnet (d) a potted plant
Answer key
- hold the plant in soil
- gently, not too tight
- it can block breathing
- much less water
- leaves
- True
- the same kind of bag
- we change it
- roots
- False
- the hot sunny day
- it wilts and droops
- give out water vapour
- False
- True
- needed
- True
- flower
- we keep it the same
- make seeds
- a magnet
- a battery cell
- a few hours
- yeast
- leaves
- roots
- we keep it the same
- False
- transpiration
- not needed
- False
- the size of the plant
- True
- a rubber band
- sun or shade
- take in water from soil
- not needed
- hold up the leaves
- True
- a magnet
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