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