Trophic Level Quiz

What role do decomposers play in an ecosystem?

• Decomposers break down dead organic matter, returning nutrients to the soil and completing the nutrient cycle.

• Decomposers produce energy through photosynthesis.

• Decomposers are primary producers that create food for herbivores.

• Decomposers compete with plants for nutrients in the soil.

What are primary consumers?

• Primary consumers are herbivores that eat producers (plants) and are the second trophic level in a food chain.

• Primary consumers are carnivores that eat other animals and are the first trophic level in a food chain.

• Primary consumers are omnivores that eat both plants and animals and are the third trophic level in a food chain.

• Primary consumers are decomposers that break down dead organic matter and recycle nutrients in the ecosystem.

What is energy transfer in a food chain?

• The movement of energy from one trophic level to the next, typically decreasing at each level.

• The process of photosynthesis in plants.

• The conversion of energy from sunlight into chemical energy.

• The transfer of energy from producers to decomposers without loss.

What is a community in ecology?

• A community is a group of different species that live together in a particular area and interact with each other.

• A community is a single species that dominates a particular area.

• A community is a collection of abiotic factors in an ecosystem.

• A community is a random assortment of organisms that do not interact.

What are producers?

• Organisms that create their own food through photosynthesis or chemosynthesis, forming the base of the food chain.

• Organisms that consume other organisms for energy and nutrients.

• Organisms that decompose dead matter and recycle nutrients back into the ecosystem.

• Organisms that rely on external sources for food and energy.

What percentage of energy is typically transferred from one trophic level to the next?

• 5%

• 10%

• 15%

• 20%

What is a population in ecological terms?

• A population is a group of individuals of the same species living in a specific area.

• A population is a collection of different species in a habitat.

• A population refers to the total number of organisms in an ecosystem.

• A population is a group of individuals that can interbreed and produce fertile offspring.

What is the significance of trophic levels in an ecosystem?

• They determine the size of the organisms in an ecosystem.

• They help to understand the flow of energy and nutrients, the relationships between organisms, and the structure of ecosystems.

• They indicate the age of the organisms in an ecosystem.

• They are used to classify organisms based on their color.

What are secondary consumers?

• Organisms that produce their own food

• Organisms that eat primary consumers; they can be carnivores or omnivores.

• Organisms that decompose dead matter

• Organisms that eat producers and primary consumers.

What is a trophic level?

• A position in a food chain that indicates the flow of energy and nutrients through an ecosystem.

• A type of organism that produces energy through photosynthesis.

• A measure of the biodiversity in an ecosystem.

• A level of pollution in a water body.