Population Size (Grade 11 NSC Matric Life Sciences): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What defines a population in ecology?
What defines a population in ecology?
Same species, same area, can interbreed
Which two factors increase population size?
Which two factors increase population size?
Natality and immigration
Which factor is density dependent?
Which factor is density dependent?
Competition for food
What is carrying capacity?
What is carrying capacity?
Max population an environment can sustain
In mark-recapture, if , , , what is ?
In mark-recapture, if , , , what is ?
When are direct counting methods most effective?
When are direct counting methods most effective?
Large, slow-moving organisms in open areas
Which organisms suit quadrat sampling best?
Which organisms suit quadrat sampling best?
Plants and sessile organisms
What characterises geometric (J-shaped) growth?
What characterises geometric (J-shaped) growth?
Rapid growth followed by sudden crash
How many phases does logistic (S-shaped) growth have?
How many phases does logistic (S-shaped) growth have?
Four phases
What happens when a population exceeds its carrying capacity?
What happens when a population exceeds its carrying capacity?
Population crash occurs