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