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) with a hot glue gun (b) with sharp wire (c) gently, not too tight (d) as tight as possible
- 2.🧺 Which of these is needed for the leafy bag test? (a) a few hours (b) yeast (c) vinegar (d) a magnet
- 3.🪴 Which of these is a job of the roots? (a) give out water vapour (b) carry water upward (c) hold the plant in soil (d) make food in sunlight
- 4.🪴 Which part of a plant does this job: hold up the leaves? (a) roots (b) leaves (c) stem (d) flower
- 5.🛟 Why must a plastic bag never go over anyone’s head? (a) it changes colour (b) it can block breathing (c) it is too big (d) it gets wet
- 6.🧺 Which of these is not needed for the leafy bag test? (a) turmeric powder (b) a potted plant (c) sunlight (d) a clear plastic bag
- 7.⚖️ 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
- 8.🪴 Where did the water inside the bag come from? (a) the rain (b) the plastic (c) the rubber band (d) the leaves
- 9.⚖️ 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 change it (c) we keep it the same
- 10.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) salt crystals (b) nothing at all (c) tiny water drops (d) tiny insects
- 11.📘 Leaves have tiny holes that let out water vapour. What are they called? (a) roots (b) petals (c) stomata (d) veins
- 12.🧺 Which of these is needed for the leafy bag test? (a) a mirror (b) turmeric powder (c) a potted plant (d) a magnet
- 13.🪴 Through which part does a plant take in water from the soil? (a) the fruits (b) the leaves (c) the roots (d) the flowers
- 14.⚖️ 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 keep it the same (b) we change it (c) we measure it
- 15.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) turmeric powder (c) a few hours (d) a potted plant
- 16.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) much more water (b) it fills with soil (c) much less water (d) exactly the same
- 17.True or false: sunlight is needed for the leafy bag test. (a) True (b) False
- 18.🪴 Which part of a plant does this job: give out water vapour? (a) flower (b) roots (c) stem (d) leaves
- 19.⚖️ 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
- 20.⚖️ 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
- 21.True or false: give out water vapour is a job of the leaves. (a) True (b) False
- 22.📘 What do we call plants giving out water vapour from their leaves? (a) germination (b) transpiration (c) digestion (d) reflection
- 23.🧺 Which of these is not needed for the leafy bag test? (a) a magnet (b) a potted plant (c) a few hours (d) a clear plastic bag
- 24.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) sunlight (b) a rubber band (c) vinegar (d) a potted plant
- 25.🔮 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
- 26.True or false: hold the plant in soil is a job of the stem. (a) True (b) False
- 27.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) sunlight (b) a potted plant (c) a magnet (d) a clear plastic bag
- 28.🧺 Do we need yeast for the leafy bag test? (a) needed (b) not needed
- 29.⚖️ 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
- 30.True or false: vinegar 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.🧺 Do we need a rubber band for the leafy bag test? (a) not needed (b) needed
- 33.🧺 Do we need a clear plastic bag for the leafy bag test? (a) not needed (b) needed
- 34.🪴 Which of these is a job of the stem? (a) make seeds (b) carry water upward (c) hold the plant in soil (d) make food in sunlight
- 35.True or false: a few hours is needed for the leafy bag test. (a) True (b) False
- 36.⚖️ 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 size of the plant (b) sun or shade (c) amount of water drops
- 37.🪴 Which of these is a job of the leaves? (a) make seeds (b) make food in sunlight (c) take in water from soil (d) hold up the leaves
- 38.🪴 Which part of a plant does this job: carry water upward? (a) flower (b) roots (c) stem (d) leaves
- 39.🪴 Which of these is a job of the flower? (a) carry water upward (b) hold the plant in soil (c) make seeds (d) give out water vapour
- 40.True or false: make food in sunlight is a job of the stem. (a) False (b) True
Answer key
- gently, not too tight
- a few hours
- hold the plant in soil
- stem
- it can block breathing
- turmeric powder
- True
- the leaves
- we keep it the same
- tiny water drops
- stomata
- a potted plant
- the roots
- we measure it
- turmeric powder
- much less water
- True
- leaves
- True
- False
- True
- transpiration
- a magnet
- vinegar
- it wilts and droops
- False
- a magnet
- not needed
- the time we wait
- True
- True
- needed
- needed
- carry water upward
- True
- the size of the plant
- make food in sunlight
- stem
- make seeds
- False
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