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