Learning objective

Identify the Sun as the main source of energy for biological systems.

Read the explanation, check the common trap, then practise with flashcards and questions.

Exam focus

Cambridge IGCSE Combined ScienceOrganisms and their environmentCore content

Study support

Understand this objective

Quick explanation

This point belongs to Energy flow, especially Energy flow outcomes.
You need to be able to identify the Sun as the main source of energy for biological systems.
The key ideas to know are State.
Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

State

Why it matters

This objective helps connect Energy flow outcomes to exam-style questions, flashcards, and revision notes for Energy flow.

Revision tools

Flashcards10 linked cards

Flashcard 1 of 10

Press Space to flip, arrows to move

Practice Questions7 linked questions

Question 1 of 7

Choose an answer, get feedback, then move sideways through the set.

0 of 5 attempted

Paper 3Theory (Core)3 marks

Description

The Sun provides energy that is essential for photosynthesis, which is the foundation of food chains.

a
Explain the importance of the Sun as the main energy source for biological systems.
Your answer
Aim for approximately 3 distinct marking points.
[3]

Revision notestopic notes

Open the full topic revision notes when you are ready to review this objective in context.

Revision hubs