Biology 0610 · IGCSE · Selection

Selection — practice question

Fig. 3.1 presents a food web.
(a)[1]

On Fig. 3.1, draw an arrow to represent this fact.

(b)[4]

Put tick(s) (✓) in every box in Table 3.1 that applies to each organism.

(c)[1]

State the organism in Fig. 3.1 that acts as both a secondary and a tertiary consumer.

(d)[2]

Predict and explain the effect that this would have on the chuckwalla population.

(e)[4]

Complete the sentences with words from the list to explain how chuckwallas developed the ability to lose part of their tails by natural selection. Each word may be used once, more than once, or not at all. A mutation caused some of the chuckwalla population to be able to lose part of their tail. Chuckwallas that could lose their tail were able to escape [BLANK]. These chuckwallas survived long enough to breed and pass their [BLANK] to their [BLANK]. Eventually [BLANK] of the chuckwallas had the ability to lose their tails.

Worked solution & mark scheme

This 12-mark question has a full step-by-step worked solution and mark scheme. One marking point: Arrow shown from chuckwallas to coyotes

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