Ecology 5078 MCQ

The diagram shows organisms in a food chain. Which organism is a producer?

• bird of prey

• insect

• plant

• small bird

Which is the primary consumer in this chain?

• solar energy

• leaf

• caterpillar

• bird

The diagram represents the energy flow through a food chain. What provides the energy source (X) for this food chain?

• decomposers

• herbivores

• plants

• sunlight

Which diagram shows the path of the energy flow in an ecosystem?

• A

• B

• C

• D

The diagram represents a food web. The letters represent organisms, and the arrows show the direction of the flow of energy. Which statement is correct?

• P and Q are decomposers

• P and Q are herbivores

• W and X are consumers

• W and X are producers

The food web shows feeding relationships in a lake.

All of the perch are killed in water pollution. How will this affect the food web?

• the population of algae will increase

• the population of pike will increase

• the population of snails will increase

• the population of tadpoles will decrease

The diagram shows the energy losses and gains of a rabbit, What percentage of energy is used for growth and repair?

• 10%

• 30%

• 60%

• 70%

The diagram shows a pyramid of numbers in a woodland ecosystem. This shows the number of individuals at each trophic level. At which trophic level are the individual organisms largest in size?

• A

• B

• C

• D

The diagram shows part of the carbon cycle. Which arrow represents photosynthesis?

• A

• B

• C

• D

The diagram shows part of a food web. Which is a pyramid of numbers based on this food web?

• A

• B

• C

• D