Ecosystems

What impact does overpopulation of a species have on an ecosystem?

• It leads to an increase in biodiversity.

• It can result in resource depletion, habitat destruction, and a decline in biodiversity.

• It has no significant effect on the ecosystem.

• It promotes the growth of other species.

What is a decomposer?

• An organism that breaks down dead or decaying organisms, returning nutrients to the soil.

• A type of plant that produces its own food through photosynthesis.

• An animal that primarily feeds on living organisms.

• A microorganism that causes diseases in plants.

What is a trophic level?

• A position in a food chain or food web, representing the flow of energy and nutrients.

• A type of ecosystem that supports various species.

• The total number of organisms in a habitat.

• A measure of the biodiversity in an area.

What is an ecosystem?

• A community of living organisms interacting with their physical environment.

• A type of plant that grows in water.

• A method of farming that uses technology to enhance crop production.

• A geographical area defined by its climate and soil type.

What is a food web?

• A simple chain of food sources in an ecosystem.

• A complex network of interconnected food chains in an ecosystem.

• A type of food chain that only includes plants.

• A diagram showing the energy flow in a single species.

What happens when the number of producers decreases?

• The number of consumers typically decreases because there is less food available.

• The number of consumers increases due to competition for resources.

• The ecosystem becomes more stable and balanced.

• The number of producers increases to compensate for the loss.

What is a consumer?

• An organism that can produce its own food using sunlight.

• An organism that cannot make its own food and relies on eating other organisms for energy.

• A type of plant that absorbs nutrients from the soil.

• An organism that only eats plants and not other animals.

What is a herbivore?

• An organism that eats plants.

• An organism that eats meat.

• An organism that eats both plants and meat.

• An organism that does not eat at all.

How does energy flow in a food chain?

• Energy flows from consumers to producers and then to decomposers, with each level receiving more energy.

• Energy flows from producers to consumers and then to decomposers, with each level receiving less energy.

• Energy flows in a circular manner among all organisms, with no loss of energy at any level.

• Energy flows only from decomposers to producers, with consumers having no role in the process.

What is a food chain?

• A food chain is a linear sequence that shows how energy and nutrients flow from one organism to another in an ecosystem.

• A food chain is a diagram that represents the physical structure of an ecosystem.

• A food chain is a list of all the organisms in a habitat.

• A food chain is a cycle that shows how organisms interact with each other.