1. Organisms need energy to carry out their life processes.
2. The Sun is the primary source of energy on Earth.
3. A plant carries out photosynthesis in the presence of sunlight to make its own food.
The Sun — Primary Source of Energy on Earth
☀️ Interdependence of Organisms
Primary 6 Science — Chapter 6 Notes with Answers
Created by Miss Clarissa Ng · www.clartutors.com
6.1 Energy from the Sun for Living Things
Energy Transfer Between Organisms
4. The energy from the plant is then transferred to a plant eater which eats the plant.
5. An animal eater which eats the plant eater will obtain energy from the plant eater that it eats.
Energy Flow — From Sun Through a Food Chain
Food Relationships
6. The interaction between organisms in which one eats another is referred to as a food relationship. We show food relationships using food chains and food webs.
Food Chain vs Food Web — Showing Food Relationships
DID YOU KNOW?
Almost all energy on Earth comes from the Sun! Even fossil fuels like coal and oil are stored solar energy from plants that lived millions of years ago.
📝 Chapter 6 Summary
Key Concepts to Remember
- Organisms need energy to carry out life processes.
- The Sun is the primary source of energy on Earth.
- Plants carry out photosynthesis using sunlight to make food.
- Energy transfers from plant → plant-eater → meat-eater.
- The interaction where one organism eats another is a food relationship.
- Food chains show a single path of energy flow.
- Food webs show many interconnected food chains.