Succession (OCR A-Level Biology A): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What distinguishes primary from secondary succession?
What distinguishes primary from secondary succession?
Primary starts on land never supporting life
Why are pioneer species often self-pollinating?
Why are pioneer species often self-pollinating?
Pollinating insects may be scarce/absent
Why are nitrogen-fixing plants crucial to primary succession?
Why are nitrogen-fixing plants crucial to primary succession?
They enrich nitrogen-poor soil for others
What characterizes a climax community?
What characterizes a climax community?
Final, stable stage with no further change
What type of primary succession occurs on sand dunes?
What type of primary succession occurs on sand dunes?
Psammosere
How does primary productivity change during succession?
How does primary productivity change during succession?
Increases to peak early, then stabilizes
What is a plagioclimax community?
What is a plagioclimax community?
Maintained seral stage preventing climax
Which factor maintains UK chalk grassland as plagioclimax?
Which factor maintains UK chalk grassland as plagioclimax?
Sheep grazing
How does soil pH change from pioneer to climax stage?
How does soil pH change from pioneer to climax stage?
Decreases from 7.2 to 3.5
What is a seral stage?
What is a seral stage?
Each distinct community during succession