Expert Maths & Science Tutoring

Q1. Knowledge Recall (1 mark)

Define an ecosystem.

Q2. Knowledge Recall (2 marks)

Name two abiotic factors that affect plant growth.

Q3. Application (2 marks)

Explain why producers are important in an ecosystem.

Q4. Data Analysis (3 marks)

The diagram shows the biomass of different trophic levels in a food chain:

[Diagram would be here]

Calculate the percentage of energy transferred from the producer to the tertiary consumer.

Q5. Knowledge Recall (1 mark)

What is the role of decomposers in an ecosystem?

Q6. Application (3 marks)

Explain how a decrease in rainfall could affect a desert ecosystem.

Q7. Data Analysis (3 marks)

The graph shows the population size of a species over time:

[Graph would be here]

Estimate the carrying capacity of the environment for this species.

Q8. Knowledge Recall (2 marks)

Define mutualism and give an example.

Q9. Application (3 marks)

Explain how the introduction of an invasive species could affect an ecosystem.

Q10. Data Analysis (4 marks)

The diagram shows a pyramid of biomass for a marine ecosystem:

[Diagram would be here]

Calculate the biomass of producers needed to support 100 kg of tertiary consumers.