Ecosystem Energy and Matter Concepts

The video tutorial explores how energy and matter move through ecosystems, highlighting the roles of producers, consumers, and decomposers. It explains the flow of energy from the sun and alternative sources like volcanic vents in deep oceans. The concept of trophic levels is discussed, along with the importance of chemical recycling and the impact of entropy on living systems.

What do the blue arrows in the ecosystem diagram represent?

• Chemical flow

• Energy flow

• Water cycle

• Nutrient absorption

What is the primary source of energy for most ecosystems?

• Ocean currents

• Chemical reactions

• The sun

• Volcanic vents

In which ecosystem is the sun not the ultimate source of energy?

• Rainforest

• Desert

• Savannah

• Deep ocean

What do we call organisms that make their own food?

• Heterotrophs

• Autotrophs

• Decomposers

• Carnivores

Which organisms are known as primary consumers?

• Carnivores

• Herbivores

• Omnivores

• Decomposers

What is the term for the disorder that increases in the universe?

• Ecosystem

• Equilibrium

• Energy

• Entropy

How do living systems maintain order despite the tendency towards disorder?

• By staying still

• By moving constantly

• By consuming energy

• By reproducing

What role do decomposers play in an ecosystem?

• They produce energy

• They increase entropy

• They recycle nutrients

• They consume producers

What happens to energy when it is used by living organisms?

• It is destroyed

• It is converted to heat

• It disappears

• It is stored indefinitely

What is the fate of chemicals in an ecosystem?

• They are reused

• They are constantly replenished

• They are lost forever

• They are destroyed