Food chains and food webs in the environment Practice exercise 1

Explain the meaning of a food chain. (1 mark)

Study the diagram below and identify:  a) The tertiary consumer  (1 mark)b) The producer  (1 mark)c) The secondary consumer  (1 mark)d) The primary consumer (1 mark)

Study the diagram below and identify:  a) The tertiary consumer  (1 mark)b) The producer  (1 mark)c) The secondary consumer  (1 mark)d) The primary consumer (1 mark)

Study the diagram below and identify:  a) The tertiary consumer  (1 mark)b) The producer  (1 mark)c) The secondary consumer  (1 mark)d) The primary consumer (1 mark)

Give two reasons why food chains are important in nature.  (2 marks)

Give two reasons why food chains are important in nature.  (2 marks)

Name the three main groups of organisms in a food chain. (3 marks)

State two differences between a food chain and a food web.  (2 marks)

State two differences between a food chain and a food web.  (2 marks)

State two differences between a food chain and a food web.  (2 marks)

Describe how energy is transferred in a food chain.  (2 marks)

Explain the role of decomposers in a food chain and give one example. (2 marks)

Explain why producers are always the first organisms in any food chain.  (2 marks)

Study the diagram below and identify each organism as a producer, primary consumer, or secondary consumer. (3 marks)

Study the diagram below and identify each organism as a producer, primary consumer, or secondary consumer. (3 marks)

Study the food web below and answer the following questions: a) Identify the producer in the food web. (1 mark)b) Name any two herbivores. (2 marks)c) Identify one organism that is both a secondary and tertiary consumer.  (1 mark)d) Name one organism that feeds on more than one type of animal. (1 mark)

Study the food web below and answer the following questions: a) Identify the producer in the food web. (1 mark)b) Name any two herbivores. (2 marks)c) Identify one organism that is both a secondary and tertiary consumer.  (1 mark)d) Name one organism that feeds on more than one type of animal. (1 mark)