1st Semester Review

Front

What is a food chain?

Back

A food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another.

Front

What is the energy transfer efficiency in a food chain?

Back

Energy transfer efficiency is typically about 10%, meaning only about 10% of the energy from one trophic level is passed to the next.

Front

What is an energy pyramid?

Back

An energy pyramid is a graphical representation that shows the flow of energy at each trophic level in an ecosystem.

Front

What is the role of producers in a food chain?

Back

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

Front

What is the significance of competition in ecosystems?

Back

Competition occurs when two or more organisms vie for the same resources, which can affect population sizes and carrying capacities.

Front

What is natural selection?

Back

Natural selection is the process by which organisms better adapted to their environment tend to survive and produce more offspring.

Front

What is homeostasis?

Back

Homeostasis is the ability of an organism to maintain a stable internal environment despite changes in external conditions.

Front

What is a feedback mechanism?

Back

A feedback mechanism is a process that uses the conditions of one component to regulate the function of another, helping to maintain homeostasis.

Front

What is the difference between herbivores, carnivores, and omnivores?

Back

Herbivores eat plants, carnivores eat animals, and omnivores eat both plants and animals.

Front

What is the impact of invasive species on native populations?

Back

Invasive species can outcompete native species for resources, leading to declines in native populations and biodiversity.