12. Organisms that feed on dead plants and animals are called ______________. 13. A line transect is a piece of ______________ or a ______________ ______________ on which marks are placed at one-metre intervals.
14. Photosynthesis is the way that ______________ make ______________ using the ________________ ________________.
15. Respiration converts ______________ ______________ into other forms. K U
Knowledge and Understanding 1. Draw a simple diagram to represent a food chain. What type of organism is found in the first level of a food chain?
2. Explain how ecosystems benefit from decomposers. 3. Study the diagram below and answer the questions that follow.
(a) Name two habitats that you can see. (b) Hermit crabs can be found in rockpools on Ireland’s rocky seashores. Identify (i) the habitat and
(ii) the ecosystem in this example. (c) List three factors that would affect the plants and animals living in this ecosystem. (d) Identify the producers in this ecosystem. (e) Identify two predators. (f) If the number of small fish was reduced what would happen to the population of birds?
(g) Give an example of a food chain from this ecosystem that has one producer and three consumers.
