Ecology Unit Quiz

What are the two main categories of components in an ecosystem?

• Biotic and Abiotic

• Natural and Artificial

• Living and Dead

• Organic and Inorganic

Which of the following is considered an abiotic factor?

• Grass

• Frog

• Sunlight

• Dragonfly

What is the main source of energy for most ecosystems on the Earth's surface?

• Geothermal energy

• Hydroelectric energy

• Wind energy

• Solar energy

What term is used to describe a single living organism in an ecosystem?

• Community

• Individual

• Species

• Population

What is the term for the place where an organism can find all its needs such as food and shelter?

• Community

• Habitat

• Niche

• Ecosystem

How does a niche differ from a habitat?

• A niche includes only the physical space an organism occupies.

• A niche includes the habitat and the organism's interactions with other species.

• A niche is the same as a habitat.

• A niche is only about the food an organism eats.

What does biodiversity refer to in an ecosystem?

• The number of abiotic factors

• The variety of living organisms

• The amount of sunlight

• The size of the ecosystem

Why is higher biodiversity beneficial for an ecosystem?

• It decreases the number of predators.

• It reduces the need for sunlight.

• It limits the growth of plant species.

• It increases the ecosystem's ability to adapt to changes.

What is meant by the sustainability of an ecosystem?

• The amount of energy it can produce

• The ability to maintain its functions over time

• The speed at which it can grow

• The number of species it can support

What was the effect of reintroducing wolves to Yellowstone Park?

• Increased sustainability

• Reduced plant growth

• Decreased biodiversity

• Increased human activity