Populations in Ecosystems (AQA A-Level Biology): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What are abiotic factors?
What are abiotic factors?
Non-living conditions affecting populations
What happens to cold-blooded organisms at temperatures above their optimum?
What happens to cold-blooded organisms at temperatures above their optimum?
Enzymes denature, reducing survival
Why do extreme temperatures reduce carrying capacity in warm-blooded organisms?
Why do extreme temperatures reduce carrying capacity in warm-blooded organisms?
Energy diverted to thermoregulation
What does higher light intensity enable in plant populations?
What does higher light intensity enable in plant populations?
Faster growth and more seeds produced
How does light availability create a cascade effect through ecosystems?
How does light availability create a cascade effect through ecosystems?
More plants support more herbivores then carnivores
What occurs when pH is at the optimum for enzymes?
What occurs when pH is at the optimum for enzymes?
Maximum catalytic activity occurs
What does a change of one pH unit represent?
What does a change of one pH unit represent?
Ten-fold change in hydrogen ion concentration
How does low humidity affect plants?
How does low humidity affect plants?
Increases transpiration rates
What characterises populations in water-scarce environments?
What characterises populations in water-scarce environments?
Small populations of drought-adapted species
What is niche separation?
What is niche separation?
Species occupying different environmental ranges