Food Chain and Ecosystem Roles

The video tutorial explains the concept of a food chain, starting with the sun as the primary energy source. It describes how plants, as primary producers, convert sunlight into food through photosynthesis. Herbivores, or primary consumers, eat these plants, while carnivores, or secondary consumers, prey on herbivores. Decomposers, such as fungi and bacteria, break down dead organisms, recycling nutrients back into the ecosystem. The video emphasizes the interconnectedness of these roles in maintaining the balance of the food chain.

What is the starting point of a food chain?

• The ocean

• The moon

• The soil

• The sun

Which process do plants use to convert sunlight into food?

• Respiration

• Fermentation

• Photosynthesis

• Transpiration

What gas do plants take in during photosynthesis that is not usable by humans?

• Oxygen

• Nitrogen

• Carbon Dioxide

• Hydrogen

Which of the following is a primary consumer?

• Shark

• Lion

• Eagle

• Elephant

Which animal is not a herbivore?

• Cow

• Giraffe

• Wolf

• Elephant

What type of consumer is a lion?

• Secondary consumer

• Primary consumer

• Decomposer

• Tertiary consumer

Which of the following is not a secondary consumer?

• Lion

• Giraffe

• Human

• Wolf

What is the main role of decomposers in the food chain?

• Hunting herbivores

• Photosynthesis

• Breaking down dead organisms

• Producing energy

Which organisms are primarily responsible for breaking down dead matter?

• Plants

• Herbivores

• Carnivores

• Fungi and bacteria

What do decomposers release back into the ecosystem?

• Carbon Dioxide

• Nutrients

• Sunlight

• Water