Organisation of an Ecosystem (OCR GCSE Biology A, Combined (Gateway Science Suite)): Flashcards
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Practise the cards
15 cards from this deck
What do food chains illustrate?
What do food chains illustrate?
How energy is transferred from one organism to another
What are producers?
What are producers?
Organisms that produce their own food through photosynthesis
What energy conversion do producers perform?
What energy conversion do producers perform?
Light energy to chemical energy (by making glucose)
What is biomass?
What is biomass?
Biological molecules that provide energy for other organisms
What are primary consumers?
What are primary consumers?
Herbivores that eat producers
What are secondary consumers?
What are secondary consumers?
Carnivores that eat primary consumers
What are prey?
What are prey?
Animals that are eaten
What are predators?
What are predators?
Animals that hunt and eat other animals
What are tertiary consumers?
What are tertiary consumers?
Higher-level carnivores that eat secondary consumers
What are apex predators?
What are apex predators?
Top predators with no natural predators
What is distribution (in ecosystem studies)?
What is distribution (in ecosystem studies)?
Where organisms are found
What is abundance (in ecosystem studies)?
What is abundance (in ecosystem studies)?
How many organisms there are
What are transects used for?
What are transects used for?
Lines where samples are taken at regular intervals
What are quadrats?
What are quadrats?
Square frames to isolate standard area for study of organisms
Effect on predators when prey population increases
Effect on predators when prey population increases
Predator numbers increase as more food becomes available