Practise

Question bank

Original exam-style questions, mapped to your syllabus. Answers are checked for mathematical equivalence and every attempt updates your mastery.

12 questions

SA-OB-PO-0011 markL1 FoundationCalculatorPopulations

All the organisms of one species living in an area form a

Salam Academy Original Practice · Proposed mark scheme

SA-OB-PO-0021 markL1 FoundationCalculatorPopulations

Which is an abiotic factor?

Salam Academy Original Practice · Proposed mark scheme

SA-OB-PO-0121 markL1 FoundationCalculatorPopulations

The place where an organism lives is its

Salam Academy Original Practice · Proposed mark scheme

SA-OB-PO-0031 markL2 StandardCalculatorGrowth curves

In the stationary phase of a population curve,

Salam Academy Original Practice · Proposed mark scheme

SA-OB-PO-0041 markL2 StandardCalculatorGrowth curves

Exponential growth happens when

Salam Academy Original Practice · Proposed mark scheme

SA-OB-PO-0052 marksL2 StandardCalculatorSampling

Quadrats of

1\ \text{m}^2

contain a mean of

3.5

plants. The field is

400\ \text{m}^2

. Estimate the population.

Salam Academy Original Practice · Proposed mark scheme

SA-OB-PO-0071 markL2 StandardCalculatorSampling

Quadrats should be placed randomly to

Salam Academy Original Practice · Proposed mark scheme

SA-OB-PO-0081 markL2 StandardCalculatorSampling

To study how plant species change from a hedge into a field, you would use a

Salam Academy Original Practice · Proposed mark scheme

SA-OB-PO-0091 markL2 StandardCalculatorPopulations

An ecosystem is

Salam Academy Original Practice · Proposed mark scheme

SA-OB-PO-0102 marksL2 StandardCalculatorSampling

Five quadrats contain

2, 4, 3, 5, 6

plants. Calculate the mean per quadrat.

Salam Academy Original Practice · Proposed mark scheme

SA-OB-PO-0063 marksL3 ExamCalculatorSampling

Quadrats of

0.25\ \text{m}^2

contain a mean of

2

snails. The area is

600\ \text{m}^2

. Estimate the population.

Salam Academy Original Practice · Proposed mark scheme

SA-OB-PO-0111 markL3 ExamCalculatorGrowth curves

Yeast in a sealed flask of sugar solution shows a death phase because

Salam Academy Original Practice · Proposed mark scheme