Food Chains and Ecosystem Dynamics

The video tutorial by Bu Ina covers the concepts of food chains and food webs, explaining the roles of producers, consumers, and decomposers. It highlights the importance of maintaining balance in ecosystems and the impact of population changes on food chains. The tutorial also discusses the consequences of ecosystem disruptions and emphasizes the need for preservation of natural habitats.

What is a food chain?

• A method of farming.

• A sequence of organisms each dependent on the next as a source of food.

• A group of animals living together.

• A type of plant that grows in the wild.

Which of the following is a producer in a food chain?

• A tree

• A snake

• A rabbit

• A lion

What role do decomposers play in a food chain?

• They break down dead organisms.

• They produce energy for plants.

• They are the top predators.

• They consume only plants.

What is the main difference between a food chain and a food web?

• A food chain includes only plants, while a food web includes only animals.

• A food chain is circular, while a food web is linear.

• A food chain is found in water, while a food web is found on land.

• A food chain is linear, while a food web is interconnected.

Which of the following is a consumer in a food web?

• Sunlight

• Grass

• Rabbit

• Water

What happens if the population of snails increases in a food chain?

• The number of birds will decrease.

• The number of plants will decrease.

• The number of foxes will decrease.

• The number of plants will increase.

How can human intervention disrupt a food chain?

• By planting more trees.

• By introducing new predators.

• By removing predators like snakes.

• By increasing the number of herbivores.

What might happen if a predator is removed from an ecosystem?

• The prey population might increase.

• The ecosystem will become more balanced.

• The ecosystem will remain unchanged.

• The prey population might decrease.

Why is it important to maintain ecosystem balance?

• To increase the number of predators.

• To make ecosystems more complex.

• To ensure all species have enough food.

• To decrease the number of plants.

What is a possible consequence of high rainfall on an ecosystem?

• Increase in pest population.

• Decrease in predator population.

• Increase in herbivore population.

• Decrease in plant growth.