Biology 0610 · IGCSE · Food chains and food webs

Food chains and food webs — practice question

Fig. 4.1 shows a rainforest food web.
(a(i))[1]

State the name of one producer present in Fig. 4.1.

(a(ii))[1]

State the name of one herbivore shown in Fig. 4.1.

(a(iii))[1]

State the number of carnivore species shown in Fig. 4.1.

(a(iv))[2]

Use the information in Fig. 4.1 to finish the food chain that includes the howler monkey and three other organisms.

(a(v))[2]

Explain why the populations of: • anacondas decrease • sloths increase

(a(vi))[1]

State the main source of energy for food webs.

(b(i))[1]

Complete Table 4.1 by working out the width of the bar for the secondary consumer feeding level.

(b(ii))[4]

Using the information in Table 4.1 and your answer to 4(b)(i), draw a pyramid of numbers on the grid. Each small square on the grid is 0.2 cm wide. Label each bar with the feeding level.

(c)[3]

Deforestation causes habitat loss for many organisms. List three other undesirable effects of deforestation.

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