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.🪴 Where did the water inside the bag come from? (a) the leaves (b) the plastic (c) the rain (d) the rubber band
- 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) sun or shade (b) the time we wait (c) amount of water drops
- 3.🧺 Which of these is needed for the leafy bag test? (a) a mirror (b) a battery cell (c) a clear plastic bag (d) a magnet
- 4.⚖️ 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) True (b) False
- 5.🛟 How should the plastic bag be tied around the branch? (a) as tight as possible (b) gently, not too tight (c) with a hot glue gun (d) with sharp wire
- 6.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) nothing at all (b) salt crystals (c) tiny insects (d) tiny water drops
- 7.True or false: a potted plant is not needed for the leafy bag test. (a) True (b) False
- 8.🧺 Which of these is needed for the leafy bag test? (a) a magnet (b) a rubber band (c) a mirror (d) turmeric powder
- 9.🧺 Do we need turmeric powder for the leafy bag test? (a) not needed (b) needed
- 10.🧺 Do we need vinegar for the leafy bag test? (a) not needed (b) needed
- 11.📘 Leaves have tiny holes that let out water vapour. What are they called? (a) petals (b) veins (c) roots (d) stomata
- 12.⚖️ 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
- 13.📘 What do we call plants giving out water vapour from their leaves? (a) digestion (b) transpiration (c) germination (d) reflection
- 14.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a potted plant (b) a few hours (c) a rubber band (d) a battery cell
- 15.🧺 Which of these is not needed for the leafy bag test? (a) a clear plastic bag (b) a battery cell (c) a potted plant (d) a rubber band
- 16.🧺 Which of these is not needed for the leafy bag test? (a) a potted plant (b) a magnet (c) a rubber band (d) a clear plastic bag
- 17.🧺 Do we need a potted plant for the leafy bag test? (a) needed (b) not needed
- 18.True or false: a battery cell is not needed for the leafy bag test. (a) False (b) True
- 19.🪴 Which of these is a job of the stem? (a) make seeds (b) carry water upward (c) give out water vapour (d) make food in sunlight
- 20.🪴 Through which part does a plant take in water from the soil? (a) the fruits (b) the roots (c) the leaves (d) the flowers
- 21.🔮 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
- 22.🪴 Which part of a plant does this job: hold up the leaves? (a) stem (b) leaves (c) flower (d) roots
- 23.🧺 Do we need a mirror for the leafy bag test? (a) not needed (b) needed
- 24.True or false: a rubber band is needed for the leafy bag test. (a) False (b) True
- 25.⚖️ 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) the time we wait (b) the size of the plant (c) sun or shade (d) the kind of plant
- 26.🧺 Which of these is needed for the leafy bag test? (a) a battery cell (b) sunlight (c) a magnet (d) turmeric powder
- 27.🪴 Which part of a plant does this job: carry water upward? (a) roots (b) flower (c) stem (d) leaves
- 28.⚖️ 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 time we wait (c) the kind of plant (d) the same kind of bag
- 29.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: sun or shade is what we measure. (a) False (b) True
- 30.🔮 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
- 31.🧺 Do we need a clear plastic bag for the leafy bag test? (a) needed (b) not needed
- 32.🪴 Which part of a plant does this job: give out water vapour? (a) roots (b) flower (c) leaves (d) stem
- 33.True or false: carry water upward is a job of the stem. (a) True (b) False
- 34.⚖️ 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) True (b) False
- 35.🧺 Do we need a rubber band for the leafy bag test? (a) not needed (b) needed
- 36.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a rubber band (b) a few hours (c) a potted plant (d) a mirror
- 37.⚖️ 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 change it (c) we measure it
- 38.True or false: take in water from soil is a job of the stem. (a) True (b) False
- 39.⚖️ 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
- 40.🧺 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) sunlight (d) a magnet
Answer key
- the leaves
- the time we wait
- a clear plastic bag
- True
- gently, not too tight
- tiny water drops
- False
- a rubber band
- not needed
- not needed
- stomata
- False
- transpiration
- a battery cell
- a battery cell
- a magnet
- needed
- True
- carry water upward
- the roots
- it wilts and droops
- stem
- not needed
- True
- sun or shade
- sunlight
- stem
- amount of water drops
- False
- much less water
- needed
- leaves
- True
- True
- needed
- a mirror
- we keep it the same
- False
- we keep it the same
- a magnet
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