Biology 8461: Ecology Topical Past Paper Questions

Farmers can increase the growth rate of farm animals by controlling the animals' diets. A farmer has 1000 chickens. • The farmer feeds the chickens on seeds from maize plants. • 1 hectare of land produces 16.4 tonnes of maize seeds. • The maize seeds have an energy content of 16…

This question is about the effects of deforestation and agriculture. The processes of photosynthesis and respiration affect the carbon dioxide concentration in the air. Figure 9 shows the changes in the carbon dioxide concentration in the air in a tropical rainforest during one d…

Energy flows through an ecosystem and materials are recycled. Figure 6 shows the water cycle. Figure 6 1 Name process X. [1 mark] 2 Name the process by which water is absorbed into plant roots. [1 mark] 3 Give two uses of water in plants. [2 marks] 1 ___ 2 ___ Figure 7 shows the…