CIE iGCSE Co-Ordinated Science B18.2 Food chains and food webs Exam Style Questions Paper 3
Question
(a) Fig. 4.1 shows a food web from a rainforest environment.
(i) Construct a food chain from Fig. 4.1 that includes the snake.
…………………………………………………………………………………………………………………….
(ii) Use Fig. 4.1 to identify one:
herbivore ………………………………………………………………………………………….
tertiary consumer. ………………………………………………………………………………………….
(iii) Removal of banana trees can cause the extinction of three‐toed sloths.
List two other undesirable effects of deforestation.
(b) Banana trees are producers that make their own carbohydrates.
State the two raw materials that producers need to make their own carbohydrates.
(c) A student makes a statement:
‘All carnivores are consumers but not all consumers are carnivores.’
Explain this statement.
(d) State the name of the type of organism that gets its energy from dead organic matter.
▶️Answer/Explanation
Ans : 4(a)(i) banana tree → howler monkey → snake ;;
4(a)(ii) herbivore howler monkey / three-toed sloth ;
tertiary consumer jaguar ;
4(a)(iii) any two from:
loss of soil / soil erosion ;
flooding ;
increase of carbon dioxide in the atmosphere ;
habitat destruction / animals displaced ;
decreased biodiversity ;
AVP ;;
4(b) carbon dioxide ;
water ;
4(c) consumers get their energy from eating animals or plants / consumers can be herbivores ;
carnivores get their energy from eating (only) animals ;
4(d) decomposer ;