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? What do we do with “amount of water drops”? (a) we measure it (b) we keep it the same (c) we change it
- 2.🪴 Which part of a plant does this job: hold the plant in soil? (a) flower (b) roots (c) stem (d) leaves
- 3.⚖️ 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
- 4.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) both the same (b) neither of them (c) the cool cloudy day (d) the hot sunny day
- 5.🧺 Do we need a battery cell for the leafy bag test? (a) needed (b) not needed
- 6.⚖️ 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 kind of plant (b) sun or shade (c) amount of water drops
- 7.🧺 Which of these is needed for the leafy bag test? (a) a few hours (b) a battery cell (c) a mirror (d) a magnet
- 8.True or false: carry water upward is a job of the leaves. (a) False (b) True
- 9.🛟 Why must a plastic bag never go over anyone’s head? (a) it can block breathing (b) it gets wet (c) it is too big (d) it changes colour
- 10.⚖️ 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
- 11.True or false: hold up the leaves is a job of the stem. (a) True (b) False
- 12.🪴 Through which part does a plant take in water from the soil? (a) the leaves (b) the fruits (c) the roots (d) the flowers
- 13.🧺 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 rubber band
- 14.🪴 Which part of a plant does this job: make seeds? (a) roots (b) flower (c) leaves (d) stem
- 15.🪴 Which part of a plant does this job: give out water vapour? (a) stem (b) flower (c) roots (d) leaves
- 16.⚖️ 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 what we measure. (a) False (b) True
- 17.⚖️ 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) sun or shade (d) the size of the plant
- 18.🪴 Which part of a plant does this job: carry water upward? (a) flower (b) stem (c) roots (d) leaves
- 19.True or false: carry water upward is a job of the roots. (a) False (b) True
- 20.True or false: vinegar is needed for the leafy bag test. (a) False (b) True
- 21.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a rubber band (b) a mirror (c) a potted plant (d) a clear plastic bag
- 22.⚖️ 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 kind of plant (b) amount of water drops (c) the same kind of bag (d) the size of the plant
- 23.🔮 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
- 24.True or false: give out water vapour is a job of the leaves. (a) False (b) True
- 25.True or false: make seeds is a job of the leaves. (a) False (b) True
- 26.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a potted plant (b) a magnet (c) a clear plastic bag (d) a rubber band
- 27.🛟 How should the plastic bag be tied around the branch? (a) with sharp wire (b) with a hot glue gun (c) as tight as possible (d) gently, not too tight
- 28.⚖️ 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) False (b) True
- 29.📘 What do we call plants giving out water vapour from their leaves? (a) transpiration (b) reflection (c) digestion (d) germination
- 30.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it flowers more (b) it wilts and droops (c) it turns blue (d) it grows faster
- 31.True or false: yeast is not needed for the leafy bag test. (a) False (b) True
- 32.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) salt crystals (b) nothing at all (c) tiny insects (d) tiny water drops
- 33.🪴 Where did the water inside the bag come from? (a) the plastic (b) the rain (c) the rubber band (d) the leaves
- 34.📘 Leaves have tiny holes that let out water vapour. What are they called? (a) petals (b) veins (c) stomata (d) roots
- 35.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the time we wait”? (a) we change it (b) we measure it (c) we keep it the same
- 36.🪴 Which of these is a job of the flower? (a) hold up the leaves (b) give out water vapour (c) make seeds (d) take in water from soil
- 37.🧺 Do we need a clear plastic bag for the leafy bag test? (a) not needed (b) needed
- 38.🧺 Which of these is not needed for the leafy bag test? (a) a clear plastic bag (b) a potted plant (c) a few hours (d) turmeric powder
- 39.True or false: hold the plant in soil is a job of the stem. (a) False (b) True
- 40.🧺 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
Answer key
- we measure it
- roots
- False
- the hot sunny day
- not needed
- the kind of plant
- a few hours
- False
- it can block breathing
- we keep it the same
- True
- the roots
- turmeric powder
- flower
- leaves
- False
- sun or shade
- stem
- False
- False
- a mirror
- amount of water drops
- much less water
- True
- False
- a magnet
- gently, not too tight
- False
- transpiration
- it wilts and droops
- True
- tiny water drops
- the leaves
- stomata
- we keep it the same
- make seeds
- needed
- turmeric powder
- False
- vinegar
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