Ecosystem Dynamics and Interactions

This video tutorial by Mr. Anderson covers ecosystem ecology, explaining the structure and function of ecosystems, the role of keystone species, and the organization of life from individuals to the biosphere. It explores terrestrial and aquatic biomes, highlighting their unique characteristics. The video also delves into ecosystem components like producers, consumers, and food webs, and discusses the concept of niches and species diversity. Finally, it addresses the edge effect and its impact on ecosystem health.

What role does a keystone species play in an ecosystem?

• It is the largest species in the ecosystem.

• It is a species that has a large impact on its environment.

• It is a species that is not affected by changes in the ecosystem.

• It is the most abundant species.

Which of the following correctly represents the organization of life from smallest to largest?

• Biome, Ecosystem, Community, Population, Individual

• Ecosystem, Biome, Community, Population, Individual

• Community, Population, Individual, Ecosystem, Biome

• Individual, Population, Community, Ecosystem, Biome

What are the two main factors that determine terrestrial biomes?

• Soil type and altitude

• Temperature and precipitation

• Latitude and longitude

• Wind speed and humidity

Which biome is characterized by high temperatures and high precipitation?

• Tundra

• Desert

• Boreal forest

• Tropical rainforest

What is the primary factor that distinguishes aquatic biomes?

• Temperature

• Salinity

• Wind speed

• Precipitation

Which of the following is a transition zone between freshwater and saltwater?

• Coral reef

• Mangrove

• Tundra

• Open ocean

In a food chain, what does the direction of the arrow represent?

• The speed of the organism

• The flow of energy from prey to predator

• The flow of energy from predator to prey

• The size of the organism

What is a niche in an ecosystem?

• The food an organism eats

• The role or job of an organism within its environment

• The physical space an organism occupies

• The time of day an organism is active

Why is species diversity important in an ecosystem?

• It increases competition among species.

• It reduces the number of predators.

• It makes the ecosystem more susceptible to changes.

• It helps the ecosystem withstand environmental changes.

What is the edge effect in an ecosystem?

• The effect of climate change on ecosystems

• The boundary between two ecosystems

• The influence of predators on prey populations

• The impact of human activities on ecosystems