GCSE Biology - Trophic Levels - Producers, Consumers, Herbivores & Carnivores

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*** WHAT'S COVERED ***
1. Trophic Levels in Food Chains
* Producers (Trophic Level 1).
* Primary Consumers / Herbivores (Trophic Level 2).
* Secondary Consumers / Carnivores (Trophic Level 3).
* Tertiary Consumers / Carnivores (Trophic Level 4).
2. Energy Transfer Between Trophic Levels
* How energy is lost moving up the food chain.
* The 10% rule for energy transfer efficiency.
* Explanation for the limited length of food chains.
3. Specific Roles in Ecosystems
* Apex Predators at the top of the food chain.
* Omnivores and their position in trophic levels.
* Decomposers and Detritivores role in nutrient recycling.

*** EXAM BOARD INFO ***
AQA - Separate/triple science only
IGCSE Edexcel - Everything is relevant to your course!
Edexcel - Separate/triple science only
OCR 21st Century - Separate/triple science only
OCR Gateway - Separate/triple science only

*** CHAPTERS ***
0:00 Introduction to Trophic Levels
0:28 Trophic Level 1: Producers
0:49 Trophic Level 2: Primary Consumers (Herbivores)
1:11 Trophic Level 3: Secondary Consumers (Carnivores)
1:25 Trophic Level 4: Tertiary Consumers (Carnivores)
1:42 Limits to Food Chain Length
1:53 Energy Loss Between Levels (10% Rule)
2:36 Apex Predators
2:49 Omnivores
3:17 Decomposers & Detritivores

*** PLAYLISTS ***










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