Trophic Levels

What happens to energy as it moves up the trophic levels?

• It increases significantly due to energy accumulation.

• It remains constant across all levels.

• It decreases significantly due to energy loss through metabolic processes.

• It is completely transferred to the next level without loss.

If the 1st trophic level has 30,000 J, how much energy does the 4th trophic level have?

• 300 J

• 30 J

• 3,000 J

• 3 J

What is an energy pyramid?

• A type of food chain that shows the relationship between different species.

• A graphical representation of the energy flow in an ecosystem, showing the amount of energy at each trophic level.

• A diagram that illustrates the physical structure of an ecosystem.

• A chart that lists all the organisms in a habitat.

What are primary consumers?

• Herbivores that eat producers to obtain energy.

• Carnivores that eat other animals for energy.

• Decomposers that break down dead organic matter.

• Plants that produce energy through photosynthesis.

What are producers in an ecosystem?

• Organisms that consume other organisms for energy.

• Organisms that create their own food through photosynthesis.

• Organisms that decompose dead matter.

• Organisms that rely on external sources for food.

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 plant that grows in aquatic environments.

• A measure of the size of an organism in a food web.

• A level of biodiversity in an ecosystem.

What is the significance of energy transfer in ecosystems?

• Energy transfer is essential for maintaining the structure and function of ecosystems, supporting life at various trophic levels.

• Energy transfer is only important for plants and not for animals.

• Energy transfer has no impact on the ecosystem's health.

• Energy transfer is primarily a concern for human activities and not natural ecosystems.

Why is biodiversity important in an ecosystem?

• It increases the number of species that can live in an area.

• It enhances ecosystem resilience, productivity, and stability, allowing it to better withstand changes.

• It reduces competition among species.

• It ensures that all species have equal access to resources.

What are tertiary consumers?

• Organisms that produce their own food through photosynthesis.

• Apex predators that eat secondary consumers and are at the top of the food chain.

• Herbivores that primarily consume plants and algae.

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

What are secondary consumers?

• Organisms that produce their own food through photosynthesis.

• Carnivores that eat primary consumers for energy.

• Herbivores that feed on plants and algae.

• Decomposers that break down dead organic matter.