Understanding Food Webs

The video explains the concept of food webs, highlighting how all living things need food for energy. It describes how plants produce food through photosynthesis and the role of decomposers like fungi and bacteria in breaking down matter. An example of a food chain is given, showing how energy flows from grass to a mouse, then to a fox, and finally decomposed by bacteria. The video emphasizes the interconnectedness of life and how atoms are reused in food webs.

What is the primary purpose of a food web?

• To show the physical locations of animals

• To illustrate how energy and matter move through an ecosystem

• To display the lifespan of different species

• To map out the migration patterns of birds

How do plants contribute to the food web?

• By decomposing dead organisms

• By consuming other animals

• By producing their own food through photosynthesis

• By migrating to different ecosystems

What role do decomposers play in the food web?

• They are top predators

• They produce energy from sunlight

• They break down dead organisms

• They are primary consumers

In the example food web, what happens to the fox after it dies?

• It becomes a plant

• It decomposes and is broken down by bacteria

• It remains intact forever

• It is eaten by another predator

What is the significance of atoms in the food web?

• Atoms are destroyed after an organism dies

• Atoms are only found in plants

• Atoms are not involved in food webs

• Atoms are recycled and reused in different forms of life

Which of the following is an example of a primary consumer in a food web?

• A plant

• A mouse

• A fox

• Bacteria