ECOLOGY: Life Sciences

What is a food chain?

• A food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another.

• A food chain is a circular pattern of food consumption in an ecosystem.

• A food chain is a complex network of food webs that includes all organisms in an area.

• A food chain is a list of all the plants and animals in a specific habitat.

What is a community in ecology?

• A community is a group of different species living together in a particular area.

• A community is a single species that dominates an ecosystem.

• A community is a collection of abiotic factors in an environment.

• A community is a random assortment of organisms without any interaction.

What is the difference between biotic and abiotic factors?

• Biotic factors are non-living components, while abiotic factors are living components.

• Biotic factors are the physical environment, while abiotic factors are the organisms.

• Biotic factors are living components of an ecosystem, while abiotic factors are non-living components.

• Biotic factors are the interactions between species, while abiotic factors are the climate conditions.

What is an ecosystem?

• An ecosystem is a community of living organisms interacting with their physical environment.

• An ecosystem is a type of plant that grows in water.

• An ecosystem is a collection of non-living things in a specific area.

• An ecosystem is a group of animals that live in the same habitat.

What is a population?

• A population is all the members of one species living in a particular area.

• A population is a group of different species living together.

• A population is the total number of organisms in an ecosystem.

• A population is the number of individuals in a food chain.

What is competition in ecology?

• Competition occurs when two or more species or individuals vie for the same resources in an ecosystem.

• Competition is the process by which species evolve to occupy different niches.

• Competition refers to the mutualistic relationships between different species.

• Competition is the phenomenon where species cooperate to share resources.

What is predation?

• An interaction where one organism (the predator) hunts and eats another organism (the prey).

• A symbiotic relationship where both organisms benefit.

• A process of mutualism between two species.

• A competition between two organisms for the same resource.

What are the levels of an ecosystem in order from largest to smallest?

• ecosystem, community, population, organism

• population, organism, community, ecosystem

• organism, population, ecosystem, community

• community, organism, ecosystem, population

What is an abiotic factor?

• A living organism that interacts with the environment.

• A non-living component of the environment, such as oxygen, that is important for living organisms.

• A type of biotic factor that affects ecosystems.

• A chemical substance produced by living organisms.

What is a limiting factor for populations of plants?

• Sunlight can be a limiting factor for populations of plants.

• Water availability is not a limiting factor for plants.

• Soil type has no effect on plant populations.

• Temperature is irrelevant to plant growth.