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? True or false: amount of water drops is what we measure. (a) False (b) True
- 2.🪴 Which of these is a job of the stem? (a) make food in sunlight (b) hold the plant in soil (c) carry water upward (d) take in water from soil
- 3.True or false: yeast is needed for the leafy bag test. (a) False (b) True
- 4.🧺 Do we need a battery cell for the leafy bag test? (a) not needed (b) needed
- 5.⚖️ 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
- 6.True or false: carry water upward is a job of the stem. (a) True (b) False
- 7.True or false: a magnet is needed for the leafy bag test. (a) False (b) True
- 8.🪴 Which part of a plant does this job: give out water vapour? (a) stem (b) leaves (c) flower (d) roots
- 9.📘 Leaves have tiny holes that let out water vapour. What are they called? (a) veins (b) stomata (c) petals (d) roots
- 10.True or false: hold up the leaves is a job of the stem. (a) True (b) False
- 11.🪴 Which part of a plant does this job: hold the plant in soil? (a) leaves (b) flower (c) roots (d) stem
- 12.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) the hot sunny day (b) both the same (c) the cool cloudy day (d) neither of them
- 13.🧺 Which of these is needed for the leafy bag test? (a) yeast (b) vinegar (c) sunlight (d) turmeric powder
- 14.True or false: a clear plastic bag is needed for the leafy bag test. (a) False (b) True
- 15.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a few hours (b) a potted plant (c) vinegar (d) a clear plastic bag
- 16.🧺 Which of these is not needed for the leafy bag test? (a) a few hours (b) a rubber band (c) a magnet (d) sunlight
- 17.⚖️ 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
- 18.🪴 Through which part does a plant take in water from the soil? (a) the flowers (b) the fruits (c) the leaves (d) the roots
- 19.⚖️ 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
- 20.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) a mirror (c) a rubber band (d) a potted plant
- 21.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it flowers more (b) it grows faster (c) it turns blue (d) it wilts and droops
- 22.True or false: a potted plant is needed for the leafy bag test. (a) True (b) False
- 23.⚖️ 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 the one thing we change. (a) False (b) True
- 24.🪴 Which part of a plant does this job: hold up the leaves? (a) roots (b) flower (c) leaves (d) stem
- 25.⚖️ 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) sun or shade (c) amount of water drops (d) the size of the plant
- 26.🪴 Which of these is a job of the roots? (a) carry water upward (b) make seeds (c) give out water vapour (d) hold the plant in soil
- 27.⚖️ 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) True (b) False
- 28.⚖️ 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 keep it the same (c) we measure it
- 29.🧺 Do we need a mirror for the leafy bag test? (a) needed (b) not needed
- 30.⚖️ 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
- 31.🪴 Which part of a plant does this job: make seeds? (a) roots (b) leaves (c) flower (d) stem
- 32.🧺 Which of these is not needed for the leafy bag test? (a) a few hours (b) a clear plastic bag (c) a potted plant (d) yeast
- 33.🛟 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
- 34.⚖️ 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 change it (b) we keep it the same (c) we measure it
- 35.🧺 Which of these is needed for the leafy bag test? (a) a battery cell (b) a clear plastic bag (c) turmeric powder (d) yeast
- 36.🔮 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 less water (d) much more water
- 37.True or false: hold up the leaves is a job of the flower. (a) False (b) True
- 38.🪴 Which part of a plant does this job: take in water from soil? (a) stem (b) roots (c) leaves (d) flower
- 39.⚖️ 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
- 40.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a magnet (b) a clear plastic bag (c) a few hours (d) a rubber band
Answer key
- True
- carry water upward
- False
- not needed
- we change it
- True
- False
- leaves
- stomata
- True
- roots
- the hot sunny day
- sunlight
- True
- vinegar
- a magnet
- True
- the roots
- the time we wait
- a mirror
- it wilts and droops
- True
- False
- stem
- amount of water drops
- hold the plant in soil
- False
- we measure it
- not needed
- we keep it the same
- flower
- yeast
- gently, not too tight
- we keep it the same
- a clear plastic bag
- much less water
- False
- roots
- the kind of plant
- a magnet
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