The Cycle of Life: Matter and Energy in Ecosystems Review

The video tutorial explores the concepts of matter and energy in organisms and ecosystems. It explains how plants use photosynthesis to convert sunlight, water, and carbon dioxide into glucose and oxygen, making them producers. Consumers obtain energy by eating other organisms. The video also covers the digestion process and chemical respiration. It introduces ecosystems, food chains, and food webs, illustrating the flow of energy and matter. An interactive exercise encourages viewers to create a food web and identify producers and consumers in a chosen ecosystem.

What process do plants use to convert sunlight into food?

• Fermentation

• Respiration

• Photosynthesis

• Digestion

Which of the following best describes a consumer in an ecosystem?

• An organism that uses sunlight to create energy

• An organism that obtains energy by eating other organisms

• An organism that decomposes organic material

• An organism that produces its own food

What is the primary role of digestion in the body?

• To store energy

• To convert sunlight into energy

• To break down food and absorb nutrients

• To produce oxygen

What does an ecosystem encompass?

• Only the non-living elements in an area

• Only the living organisms in an area

• Only the plants in an area

• Both living and non-living components in an environment

How does a food web differ from a food chain?

• A food web shows multiple paths of energy flow, while a food chain shows a single path.

• A food web is a linear sequence, while a food chain is a complex network.

• A food web shows a single path of energy flow, while a food chain shows multiple paths.

• A food web includes only producers, while a food chain includes only consumers.