Quarter 2 Bio Practice Final

Front

What is an energy pyramid?

Back

An energy pyramid is a graphical representation that shows the flow of energy at different trophic levels in an ecosystem, illustrating how energy decreases as it moves from producers to primary consumers to higher trophic levels.

Front

What role do producers play in an ecosystem?

Back

Producers, such as plants, convert sunlight into energy through photosynthesis, forming the base of the food chain and providing energy for consumers.

Front

Define primary consumers.

Back

Primary consumers are organisms that eat producers; they are typically herbivores that obtain energy by consuming plants.

Front

What are tertiary consumers?

Back

Tertiary consumers are organisms that eat secondary consumers; they are often top predators in an ecosystem and receive the least amount of energy from the energy pyramid.

Front

Explain how matter moves in a food chain.

Back

Matter cycles through ecosystems as organisms consume one another, decompose, and return nutrients to the soil, allowing for continuous growth and energy flow.

Front

How does energy flow in a food chain?

Back

Energy flows in one direction through a food chain, from producers to consumers, and is lost as heat at each trophic level.

Front

What is the significance of plants in a closed system?

Back

Plants help regulate carbon dioxide levels by absorbing CO2 during photosynthesis, thus maintaining a balanced ecosystem in a closed system.

Front

What happens to energy as it moves up the food chain?

Back

As energy moves up the food chain, it decreases due to energy loss through metabolic processes, heat, and waste.

Front

What is photosynthesis?

Back

Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll, converting carbon dioxide and water into glucose and oxygen.

Front

What is cellular respiration?

Back

Cellular respiration is the process by which cells convert glucose and oxygen into energy, carbon dioxide, and water, releasing energy for cellular activities.