Energy Flow in Ecosystems and Food Chains

The video tutorial explains how energy from the Sun is converted by producers into food, which is then passed along food chains. It describes the roles of producers, consumers, and decomposers in ecosystems, and how these components interact within food webs. The tutorial also highlights the complexity of food webs and the potential impacts of species extinction on ecosystems.

What is the primary source of energy for all living things?

• The Sun

• The Ocean

• The Moon

• The Earth

In a food chain, what role do plants play?

• Decomposers

• Primary consumers

• Tertiary consumers

• Producers

What does the arrow in a food chain represent?

• The speed of the organism

• The size of the organism

• The lifespan of the organism

• The direction of energy flow

Which of the following is NOT a component of an ecosystem?

• Predators only

• Consumers

• Producers

• Decomposers

What is the role of decomposers in an ecosystem?

• To consume producers

• To break down dead organisms

• To produce energy

• To provide shelter

Which type of organism eats both plants and animals?

• Herbivore

• Carnivore

• Omnivore

• Producer

What is a food web?

• A single food chain

• A network of interconnected food chains

• A type of ecosystem

• A group of producers

What might happen if a species is removed from a food web?

• The ecosystem becomes more stable

• All species increase in number

• It can cause a ripple effect impacting other species

• Nothing changes

If sea ducks are removed from a food web, what is a possible consequence?

• Tundra swans will disappear

• Bald eagles will eat more fish

• Ospreys will have more food

• Herbivorous ducks will decrease

What is the term for the interconnected roles of animals in multiple food chains?

• Food chain

• Ecosystem

• Food web

• Trophic level