Energy Flow in Ecosystems: Food Chains and Roles of Living Things

The video explains how all living things require energy to survive, with plants acting as producers through photosynthesis and animals as consumers. It describes the roles of predators and prey in the food chain, which illustrates the dependency of organisms on each other for food. The video also covers the different levels of consumers and the role of decomposers like bacteria and fungi in breaking down dead organisms.

What is the primary source of energy for plants?

• Eating other plants

• Photosynthesis

• Absorbing nutrients from soil

• Consuming animals

How do animals primarily obtain their energy?

• By absorbing sunlight

• Through photosynthesis

• Through decomposition

• By consuming other living things

What term describes an animal that hunts and eats other animals?

• Prey

• Producer

• Predator

• Decomposer

In a food chain, what is the role of prey?

• To decompose organic matter

• To be consumed by predators

• To produce energy

• To photosynthesize

What typically starts a food chain?

• A plant

• A large animal

• A primary consumer

• A decomposer

Which of the following is a secondary consumer likely to eat?

• Plants

• Primary consumers

• Tertiary consumers

• Decomposers

What is the role of decomposers in an ecosystem?

• To consume primary consumers

• To hunt prey

• To produce food through photosynthesis

• To break down dead organisms

Which of the following is an example of a decomposer?

• A beetle

• A lion

• A rabbit

• A tree