Energy Pyramids

If there are 1000 Kcal available at the producers level, how much energy is available at the primary consumers level?

• 50 Kcal

• 100 Kcal

• 200 Kcal

• 500 Kcal

Why is energy transfer inefficient in ecosystems?

• Because energy is lost as heat and through metabolic processes at each trophic level.

• Because energy is constantly recycled and never lost.

• Because all organisms use energy equally efficiently.

• Because energy is only transferred in one direction without loss.

Why is a pyramid shape used to represent energy transfer?

• Because energy decreases as you go up the food chain, similar to how a pyramid gets smaller as you go up.

• Because pyramids are a common shape in nature and represent stability.

• Because energy is evenly distributed at all levels of the food chain.

• Because the pyramid shape allows for easy visualization of energy flow.

What is a trophic level?

• A type of ecosystem

• Each step in a food chain or food web, representing a different level of energy transfer.

• A measure of biodiversity

• The total biomass of an area

What is the average amount of energy transferred from one trophic level to the next?

• 5%

• 10%

• 15%

• 20%

What is an Energy Pyramid?

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

• A diagram illustrating the flow of water in a habitat.

• A chart depicting the population sizes of different species in an area.

• A model representing the distribution of nutrients in soil.

What is the difference between a food chain and a food web?

• A food chain is a complex network of interconnected food chains, while a food web is a linear sequence of energy transfer.

• A food chain is a linear sequence of energy transfer, while a food web is a complex network of interconnected food chains.

• A food chain includes only plants, while a food web includes both plants and animals.

• A food chain represents multiple ecosystems, while a food web represents a single ecosystem.

What is the role of decomposers in an energy pyramid?

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

• Decomposers produce energy through photosynthesis.

• Decomposers consume primary producers to gain energy.

• Decomposers are responsible for the growth of plants in the energy pyramid.

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

• Energy increases as it moves up the trophic levels.

• Energy remains constant as it moves up the trophic levels.

• Energy decreases as it moves up the trophic levels.

• Energy fluctuates as it moves up the trophic levels.

What is the significance of energy pyramids in ecosystems?

• They illustrate the efficiency of energy transfer and the energy available to different organisms.

• They show the distribution of species in an ecosystem.

• They represent the number of organisms at each trophic level.

• They indicate the amount of water available in an ecosystem.