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