Grade 7Sciencequiz16 questions

Photosynthesis and respiration

Grade 7: what plants need to make food, oxygen and carbon dioxide, respiration, leaves.

Free to play. Teams answer on one screen; your phone is the remote. No student devices.

Questions

Which source of energy do plants use for photosynthesis?
- Light
- Soil
- Sound
- Wind
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Light
Besides light and carbon dioxide, what raw material does photosynthesis need?
- Oxygen
- Salt
- Sugar
- Water
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Water
Plants make their own food, so they do not need to eat other living things. (True or false?)
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True
What sugar do plants make in photosynthesis?
- Glucose
- Iron
- Salt
- Soil
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Glucose
Which gas do plants take in from the air to make food?
- Carbon dioxide
- Hydrogen
- Nitrogen
- Oxygen
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Carbon dioxide
Which gas is released by plants during photosynthesis?
- Carbon dioxide
- Methane
- Nitrogen
- Oxygen
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Oxygen
Animals release carbon dioxide when they breathe out. (True or false?)
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True
Which process releases energy from glucose in living cells?
- Digestion
- Evaporation
- Photosynthesis
- Respiration
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Respiration
Plants respire only during the day and never at night. (True or false?)
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False
Name the two products of aerobic respiration. (Answer out loud)
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Carbon dioxide and water
Complete the word equation for respiration: glucose + ? → carbon dioxide + water (Answer out loud)
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Oxygen
Which green substance in leaves absorbs light for photosynthesis?
- Cellulose
- Chlorophyll
- Haemoglobin
- Keratin
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Chlorophyll
What are the tiny holes in the underside of a leaf called?
- Petals
- Roots
- Stomata
- Veins
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Stomata
What do we call the tubes in a leaf that carry water and sugars? (Answer out loud)
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Veins
Why are most leaves wide and flat?
- To catch more light
- To hold up the stem
- To make more roots
- To store more soil
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To catch more light
Which part of a plant cell contains most of the chlorophyll?
- Cell wall
- Chloroplast
- Nucleus
- Vacuole
Show answer
Chloroplast

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