Ecosystems Review

What is an ecosystem?

• A community of living organisms interacting with their physical environment.

• A type of biome characterized by extreme temperatures.

• A collection of non-living things in a specific area.

• A group of organisms that only includes plants.

What role do decomposers play in an ecosystem?

• They produce energy through photosynthesis.

• They break down dead organic matter, returning nutrients to the soil.

• They compete with plants for sunlight and water.

• They create new organic matter from inorganic substances.

What is the significance of producers in an ecosystem?

• Producers, like plants, convert solar energy into chemical energy through photosynthesis, forming the base of the food chain.

• Producers are organisms that consume other organisms for energy and nutrients.

• Producers are responsible for decomposing organic matter in the ecosystem.

• Producers help in regulating the temperature of the ecosystem.

What are primary consumers?

• Organisms that eat producers; they are typically herbivores.

• Organisms that produce their own food through photosynthesis.

• Organisms that decompose dead matter and recycle nutrients.

• Organisms that eat other consumers for energy.

What is the role of sunlight in an ecosystem?

• Sunlight provides the energy necessary for photosynthesis, which supports the entire food web.

• Sunlight is primarily responsible for regulating temperature in the ecosystem.

• Sunlight helps in the decomposition of organic matter.

• Sunlight is not essential for any processes in the ecosystem.

What are the products of photosynthesis in green plants?

• Carbon dioxide and water

• Sugar and oxygen

• Nitrogen and glucose

• Hydrogen and carbon

What type of diet does a rabbit have?

• Carnivore

• Omnivore

• Herbivore

• Insectivore

Name three consumers in an ecosystem.

• Tadpoles, humans, and turtles.

• Grass, trees, and shrubs.

• Rabbits, deer, and cows.

• Fungi, bacteria, and algae.

What is a food web?

• A simple chain of food sources in an ecosystem.

• A complex network of feeding relationships among organisms in an ecosystem.

• A type of food that is healthy for humans.

• A diagram showing the energy flow in a single species.

What is the correct flow of energy in a food chain?

• Sun --> Grass --> Rabbit --> Fox

• Sun --> Rabbit --> Grass --> Fox

• Grass --> Sun --> Fox --> Rabbit

• Fox --> Rabbit --> Grass --> Sun