Food Chain and Ecosystem Roles

The video tutorial introduces the concept of food chains, explaining the roles of producers, consumers, and decomposers. It details how energy is transferred through different levels of consumers, from herbivores to carnivores, and provides examples of food chains in rice field and ocean ecosystems. The tutorial concludes with a summary and farewell.

What is a food chain?

• A chain used to bind food items together.

• A process of photosynthesis in plants.

• A method of food preservation.

• A sequence of events where one organism eats another and obtains energy.

Which of the following is a producer?

• Grass

• Mushroom

• Lion

• Eagle

What type of organism is a herbivore?

• An organism that eats plants.

• An organism that produces its own food.

• An organism that eats meat.

• An organism that decomposes organic material.

Which of the following is a primary consumer?

• Rabbit

• Eagle

• Snake

• Grass

What role do decomposers play in the food chain?

• They are at the top of the food chain.

• They produce their own food.

• They consume primary consumers.

• They break down dead organisms.

In a rice field ecosystem, which organism is a primary consumer?

• Eagle

• Sparrow

• Snake

• Rice plant

In a rice field ecosystem, which organism is a secondary consumer?

• Eagle

• Snake

• Sparrow

• Rice plant

In a marine ecosystem, which organism is a primary consumer?

• Sea lion

• Tuna

• Shrimp

• Phytoplankton

In a marine ecosystem, which organism is a tertiary consumer?

• Tuna

• Phytoplankton

• Shrimp

• Sea lion

What happens to an organism after it dies in the food chain?

• It becomes a secondary consumer.

• It is broken down by decomposers.

• It is eaten by primary consumers.

• It becomes a producer.