3 The natural environment and species survival

Practice questions on The natural environment and species survival

• Photosynthesis is the process by which plants make their own food. Explain how the raw mat… (5 marks, Explain)
• A variegated plant has leaves with green regions and white regions. The white regions cont… (5 marks, Explain)
• Scientists have recorded a significant decrease in Arctic sea ice over the past 50 years. … (5 marks, Explain)
• A farmer grows wheat plants in two different fields. Field A has fertile soil and receives… (5 marks, Explain)
• A student leaves a healthy green plant in a dark cupboard for 48 hours. After this time, t… (5 marks, Explain)
• Explain why energy is lost at each trophic level in a food chain, and describe how this af… (5 marks, Explain)
• A grassland ecosystem contains grass, grasshoppers, frogs and herons arranged in a food ch… (5 marks, Explain)
• A woodland ecosystem contains oak trees, caterpillars, blue tits and sparrowhawks arranged… (5 marks, Explain)
• A coral reef ecosystem contains algae, small fish, large fish and sharks. A student claims… (5 marks, Explain)
• Scientists have found evidence that climate change is causing shifts in the seasonal timin… (5 marks, Explain)
• Carbon dioxide is a greenhouse gas. Explain how an increase in carbon dioxide levels in th… (5 marks, Explain and Describe)
• A population of mountain hares lives in a cold northern region. The hares have white fur, … (5 marks, Explain)
• A population of freshwater fish lives in a large lake. After a period of volcanic activity… (5 marks, Explain)
• Deforestation is one human activity linked to climate change. Explain how large-scale defo… (5 marks, Explain)
• A population of finches lives on a mainland. Some finches migrate to a remote island far o… (5 marks, Explain)
• A population of beetles lives on a large island. Over thousands of years, the island split… (5 marks, Describe)
• Explain how a new species can arise from an original population of organisms through the p… (5 marks, Explain)
• A farmer grows wheat in a large field. The wheat is eaten by mice, which are eaten by owls… (5 marks, Explain)
• Climate change is causing global temperatures to rise. Explain how rising temperatures cau… (5 marks, Explain)
• A student investigates the effect of light intensity on the rate of photosynthesis in a po… (5 marks, Explain)