Draw a line from each word on the left to its definition. food chain The network of all the inter-related food chains in a biological community. food web The sequence of who eats whom in a biological community. autotroph An organism that gets its energy by eating other organisms. heterotroph An organism that makes its food from light or chemical energy without eating. carnivore An organism that eats plants. herbivore An organism that eats meat. primary consumer A meat-eater that eats primary consumers. secondary consumer A meat-eater that eats tertiary consumers. tertiary consumer A meat-eater that eats autotrophs. quaternary consumer A meat-eater that eats secondary consumers.
The Correct Answer and Explanation is:
Let’s match each term with its correct definition:
- Food Chain: The sequence of who eats whom in a biological community. This refers to the simple, linear flow of energy from one organism to the next in an ecosystem.
- Food Web: The network of all the inter-related food chains in a biological community. This is a more complex representation of energy flow in an ecosystem, showing how multiple food chains are connected.
- Autotroph: An organism that makes its food from light or chemical energy without eating. These organisms, like plants or some bacteria, use sunlight (photosynthesis) or chemicals (chemosynthesis) to produce their own food.
- Heterotroph: An organism that gets its energy by eating other organisms. Heterotrophs cannot make their own food and depend on other organisms (either plants or animals) for nourishment.
- Carnivore: An organism that eats meat. Carnivores are secondary or tertiary consumers that feed on other animals to obtain their energy.
- Herbivore: An organism that eats plants. Herbivores are primary consumers and only feed on plant matter.
- Primary Consumer: An organism that eats autotrophs (plants or algae). Primary consumers are usually herbivores, like rabbits or insects, that directly consume producers.
- Secondary Consumer: A meat-eater that eats primary consumers. These consumers may feed on herbivores (primary consumers), such as a fox eating a rabbit.
- Tertiary Consumer: A meat-eater that eats secondary consumers. These are often apex predators like eagles, which can feed on secondary consumers (like snakes or other smaller carnivores).
- Quaternary Consumer: A meat-eater that eats tertiary consumers. These are the top predators in an ecosystem, such as humans or certain big cats that may eat animals lower in the food chain.
Explanation:
Each organism plays a specific role in the flow of energy through an ecosystem. Autotrophs (producers) form the base of the food chain, as they produce their own food using energy from the sun or chemicals. Heterotrophs (consumers) rely on autotrophs or other consumers for energy. Primary consumers eat producers, while secondary consumers and tertiary consumers prey on lower consumers. Quaternary consumers are at the top of the food chain, preying on the predators below them.
These interactions form intricate food webs and determine the balance of an ecosystem. Each consumer level is important for maintaining energy flow and ecosystem stability.
