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