Ecosystem Factors and Organization

The video tutorial covers ecological organization, focusing on biotic and abiotic factors in ecosystems. It explains the hierarchy from a single organism to the biosphere, using examples from a desert ecosystem and the African Savannah. The tutorial emphasizes the distinction between living (biotic) and non-living (abiotic) components and their interactions within ecosystems.

What are the two main types of factors found in an ecosystem?

• Living and Dead

• Natural and Artificial

• Biotic and Abiotic

• Organic and Inorganic

Which of the following is a biotic factor in a desert ecosystem?

• Sand

• Cacti

• Rocks

• Sunlight

What distinguishes abiotic factors from dead things?

• Abiotic factors were once living

• Abiotic factors are non-living and never lived

• Abiotic factors are living organisms

• Abiotic factors are dead organisms

Which of the following is an abiotic factor in an African Savannah?

• Elephant

• Zebra

• Sunlight

• Gazelle

What is the base level of ecological organization?

• Population

• Community

• Organism

• Ecosystem

In ecological terms, what is a population?

• The entire biosphere

• All living and non-living things in an area

• A group of the same species living in an area

• A group of different species living together

What makes up a community in an ecosystem?

• All populations of living organisms in an area

• All organisms of a single species

• The biosphere

• All abiotic factors in an area

What is an ecosystem composed of?

• Only biotic factors

• Only abiotic factors

• Only living organisms

• Both biotic and abiotic factors

What does the biosphere encompass?

• Only land areas

• All areas where living things exist

• Only water bodies

• Only the atmosphere

Which of the following is NOT part of the ecological organization hierarchy?

• Organism

• Population

• Community

• Species