Biology 0610 · IGCSE · Food chains and food webs

Food chains and food webs — practice question

Fig. 6.1 presents a food web.
(a(i))[1]

State how many trophic levels are present in the food web in Fig. 6.1.

(a(ii))[1]

State the name of one organism from Fig. 6.1 that feeds at both the third and fourth trophic levels.

(a(iii))[1]

State the type of energy that is transferred between trophic levels.

(b)[3]

Explain why the total biomass of the snakes is smaller than the total biomass of the mice. Include the term energy in your answer.

(c)[3]

Describe the ways in which drought can contribute to famine.

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