Ecosystems and Nutritional Relationships Quiz

Which of the following best describes an ecosystem?

• A group of animals living together
• A community of living organisms interacting with each other and their non-living environment
• A forest with many different types of trees
• The weather patterns in a specific region

Which of the following is NOT an example of an ecosystem?

• Tropical rainforest
• Coral reef
• Desert
• Shopping mall

What is the primary role of producers in an ecosystem?

• To break down dead organic matter
• To hunt and eat other organisms
• To make their own food using sunlight or chemical energy
• To regulate the population of other species

Which of the following is an example of a consumer in an ecosystem?

• Grass
• Bacteria
• Lion
• Algae

What is the main function of decomposers in an ecosystem?

• To produce oxygen
• To break down dead organic matter and release nutrients
• To regulate temperature
• To pollinate plants

Which of the following is NOT a reason why nutritional relationships are important in ecosystems?

• They ensure energy flow
• They maintain balance in populations
• They contribute to biodiversity
• They prevent all changes in the ecosystem

In a predator-prey relationship, what role does the cheetah play when hunting a gazelle?

• Prey
• Predator
• Producer
• Decomposer

How does predation help balance ecosystems?

• By increasing the number of prey animals
• By eliminating all weak animals
• By controlling prey populations and preventing overgrazing
• By ensuring all species have equal populations

What is competition in an ecosystem?

• When organisms work together for mutual benefit
• When organisms vie for limited resources
• When one organism eats another
• When organisms produce their own food

What might happen if there's too much competition in an ecosystem?

• The ecosystem becomes more stable
• All species thrive equally
• Some organisms may die or fail to reproduce
• Competition always leads to new species formation