Learning objective
Explain that algae and plants produced oxygen by photosynthesis.
Read the explanation, check the common trap, then practise with flashcards and questions.
At a glance
0
Flashcards
0
Questions
Topic
The composition and evolution of the Earth's atmosphere
Subtopic
How oxygen increased
Study support
Understand this objective
Quick explanation
Explain that algae and plants produced oxygen by photosynthesis
- This point belongs to The composition and evolution of the Earth's atmosphere, especially How oxygen increased.
- You need to be able to explain that algae and plants produced oxygen by photosynthesis.
- The key ideas to know are algae, plants, and photosynthesis.
- Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.
Key concepts
Why it matters
This objective helps connect How oxygen increased to exam-style questions, flashcards, and revision notes for The composition and evolution of the Earth's atmosphere.
Quick student answer
How do you explain algae and plants produced oxygen by photosynthesis?
Direct answer
In Chemistry, this page helps you answer questions about algae and plants produced oxygen by photosynthesis within The composition and evolution of the Earth's atmosphere. Focus on the key process, correct scientific terms, and how the idea links to exam-style questions. Key terms to check are photosynthesis and oxygen.
Key terms
- photosynthesis: The process by which algae and plants convert carbon dioxide and water into glucose and oxygen using sunlight.
- oxygen: A diatomic molecule (O2) produced as a byproduct of photosynthesis, essential for the respiration of most living organisms.
Common trap
Misunderstanding Photosynthesis: Remember that photosynthesis is the process by which algae and plants produce oxygen using carbon dioxide and sunlight.
Related questions
Try this as a practice card
Question 1 of 4
Choose an answer, get feedback, then move sideways through the set.
Flashcard prompts
Flip through the key recall cards
Flashcard 1 of 4
Practise next
Revision tools
Choose how to practise
Flashcards0 linked cards
Practice Questions0 linked questions
Revision notestopic notes
Open the full topic revision notes when you are ready to review this objective in context.
Open revision notesRelated learning objectives
- Recall that the Earth's atmosphere is about 80 percent nitrogen.
The proportions of different gases in the atmosphere
- Recall that the Earth's atmosphere is about 20 percent oxygen.
The proportions of different gases in the atmosphere
- Recall that the Earth's atmosphere contains small proportions of other gases including carbon dioxide, water vapour and noble gases.
The proportions of different gases in the atmosphere
- Interpret simple data showing the proportions of gases in the atmosphere.
The proportions of different gases in the atmosphere
- Distinguish the major gases in the present atmosphere from trace atmospheric gases.
The proportions of different gases in the atmosphere