Lesson 4.9.1.3
4.9.1.3 How oxygen increased Quiz: AQA Chemistry, Unit 9
20 questions
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Lesson 4.9.1.3, How oxygen increased: 20 multiple choice questions for the AQA GCSE Chemistry (8462), Unit 9: Chemistry of the atmosphere, written with Revision Ninja.
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The 20 questions
-
Which organisms produced atmospheric oxygen by photosynthesis?
- Algae and plants
- Animals and insects
- Bacteria and fungi
- Viruses and protozoa
-
What process produced the oxygen that is now in the atmosphere?
- Neutralisation
- Combustion
- Respiration
- Photosynthesis
-
Approximately when did algae first produce oxygen?
- 1.0 billion years ago
- 500 million years ago
- 4.6 billion years ago
- 2.7 billion years ago
-
Over what time period did the percentage of oxygen gradually increase?
- Next ten years
- Next billion years
- Past ten million years
- Next five billion years
-
What major evolutionary milestone did a higher oxygen level enable?
- Fish
- Amphibians
- Reptiles
- Animals
-
Algae first produced oxygen about 2.7 billion years ago. If the Earth is 4.6 billion years old, how long after its formation was this?
- About 1.9 billion years
- About 2.7 billion years
- About 1.0 billion years
- About 4.6 billion years
-
In what condition do aquatic plants visibly produce oxygen?
- Freezing point
- Daylight
- Darkness
- High pressure
-
What indicates that aquatic plants are producing oxygen in daylight?
- Gas bubbles
- Precipitate formation
- Temperature rise
- Colour change
-
How did the percentage of oxygen change after algae first appeared?
- Decreased rapidly
- Fluctuated wildly
- Remained constant
- Increased gradually
-
Approximately when did oxygen first appear in the Earth's atmosphere?
- 4.6 billion years ago
- 100 million years ago
- 2.7 billion years ago
- 10 thousand years ago
-
Which process removes carbon dioxide while adding oxygen to the air?
- Combustion
- Thermal decomposition
- Neutralisation
- Photosynthesis
-
Which gas do algae and plants release during photosynthesis?
- Oxygen
- Nitrogen
- Ammonia
- Methane
-
Which gas does a plant take in while releasing oxygen in daylight?
- Nitrogen
- Helium
- Oxygen
- Carbon dioxide
-
What organisms first produced oxygen in Earth's early atmosphere?
- Fish and amphibians
- Animals and fungi
- Bacteria and viruses
- Algae and plants
-
Roughly when did atmospheric oxygen reach levels suitable for animals?
- Present day
- 1.7 billion years ago
- 3.6 billion years ago
- 4.6 billion years ago
-
Which organisms evolved during the billion-year period of rising oxygen?
- Birds
- Insects
- Mammals
- Plants
-
A pondweed in sunlight releases gas bubbles. Which gas is most likely?
- Sulfur dioxide
- Hydrogen
- Chlorine
- Oxygen
-
Which organism is not named in the specification as an early oxygen producer?
- Fungi
- Algae
- Aquatic plants
- Plants
-
What biological development accompanied the gradual rise in early oxygen?
- Bacterial decay
- Fungal growth
- Animal extinction
- Plant evolution
-
Which chronological sequence of life forms matches the increase in atmospheric oxygen?
- Animals, plants, algae
- Animals, algae, plants
- Plants, algae, animals
- Algae, plants, animals
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