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2.1 Energy Flow in an Ecosystem.pptx
- 1. Chapter 2 Ecosystem SCIENCE| DLP | FORM 2
- 2. 2.1 Energy Flowin an Ecosystem
- 3. Do you know? •Sun – the source of energy in all ecosystems • Green plants – convert light energy from the Sun into chemical energy through photosynthesis. • Chemical energy – transferred to primary consumers followed by secondary and tertiary consumers in the food chain and food web
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- 5. Ecosystem Organisms Producer Consumer Decomposer • Produces itsown food through photosynthesis • Green plants
- 6. Ecosystem Organisms Producer Consumer Decomposer • Eat anotherorganism • Eat producers • Herbivores and omnivores • Eat secondary consumer • Carnivore • Eat primary consumer • Omnivore and carnivore Primary Consumer Secondary Consumer Tertiary Consumer • Herbivore – plants • Carnivore – animals • Omnivore - both
- 7. Ecosystem Organisms Producer Consumer Decomposer • Breaks downdead animals and plants into simpler materials or nutrients • Saprophytism
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- 9. Food Chain Used toshow the feeding relationship between organisms Cabbage Snail Bird Fox Producer Primary consumer Secondary consumer Tertiary consumer
- 10. Food Web The interconnectionof a few food chains Cabbage Caterpillar Bird Snake Cabbage Snail Bird Snake Cabbage Grasshopper Bird Snake Cabbage Grasshopper Frog Snake
- 11. Energy Flow inFood Web Cabbage Snail Bird Fox Energy is transferred from one organism to another organism
- 12. Energy Flow inFood Web •Energy loss • Movement • Respiration • Heat energy / chemical energy through undigested food / faeces
- 13. See you in thenext video …