Extension/Extension activity
Ask learners to find recent newspaper articles that report on examples of food that cause chain/web disruptions.
Unit 5 Adaptations Learner’s Book pages 38–43 Unit overview
This unit looks at the ways in which organisms are suited to their environment. Some adaptation features are investigated, as well as adaptation as a slow process of change. Resources Potted cactus or aloe Teaching guidelines
Show learners a potted cactus or aloe and discuss why the plant has spines or prickles.
Activity 1 Draw and describe how some plants are adapted to their environment
Learner’s Book page 39
Guidelines to implement this activity This is an individual activity.
Suggested answers
1 and 2 Aloe: thorns to prevent animals from eating them; thick, fleshy leaves to store water in dry conditions
Sundew: sticky fluid and fine hairs to catch insects
Pitcher plant: deep flower so that the insect cannot escape while being digested
3 Mangrove trees’ extensive, stilt-like roots function as an adaption to give them support in soft soils. (The roots also have adaptions to prevent or limit the intake of salt water.)
(2) (2)
(2) (2)
Prickly pears have thick fleshy leaves to store water in arid conditions. They have spines to prevent animals from eating them.
(2) Total: 10 marks 42
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