Biology 0610 · IGCSE · Populations

Populations — practice question

(a)[2]

Draw one line to match each term with its description. Draw two lines.

(b(i))[2]

The graph data are split into four phases: A, B, C and D. The list gives the four phase names: death, exponential, lag, stationary. Use the words in the list to identify phases A, B, C and D shown in Fig. 6.1.

(b(ii))[5]

Complete the sentences using the information in Fig. 6.1 and your own knowledge. The number of live bacteria in phase A stayed at ................................... per $\text{cm}^3$. In phase B the number of live bacteria doubled between 2.0 hours and ................................... hours. The highest number of live bacteria was in phase ................................... . In phase ................................... the number of live bacteria decreased because the bacteria did not have enough ................................... .

Worked solution & mark scheme

This 9-mark question has a full step-by-step worked solution and mark scheme. One marking point: community - all populations of different species in an ecosystem

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