Food Chains and Ecosystem Roles

The video tutorial explains the functioning of estuarine ecosystems, highlighting the sun as the primary energy source. It describes the roles of autotrophs (producers) and heterotrophs (consumers) in energy transfer. The concept of food chains and trophic levels is introduced, showing how energy flows through different organisms. The formation of food webs from interconnected food chains is discussed, along with energy loss at each trophic level. The role of decomposers in recycling nutrients back into the ecosystem is also covered.

What is the primary source of energy in an ecosystem?

• Wind

• The sun

• Water

• The moon

Which organisms are known as producers in an ecosystem?

• Autotrophs

• Carnivores

• Omnivores

• Herbivores

What do primary consumers feed on?

• Tertiary consumers

• Decomposers

• Secondary consumers

• Producers

What is a food chain?

• A type of ecosystem

• A series of organisms each dependent on the next as a source of food

• A network of interconnected food chains

• A group of producers

How does a food web differ from a food chain?

• It is a single linear path

• It includes only producers

• It is a type of habitat

• It shows multiple interconnected food chains

What happens to energy that is not transferred to the next trophic level?

• It is converted into water

• It is used for photosynthesis

• It is stored in the biomass

• It is completely lost

What role do decomposers play in an ecosystem?

• They are secondary consumers

• They produce energy

• They are primary consumers

• They decompose organic matter and release nutrients

Which organisms are known as tertiary consumers?

• Secondary consumers

• Primary producers

• Primary consumers

• Secondary carnivores

What is a trophic level?

• A type of ecosystem

• A position in a food chain

• A group of producers

• A type of habitat

How do organisms form different food chains?

• By being at the same trophic level

• By living in the same habitat

• By obtaining energy from various food sources

• By consuming only producers