Unit 9 Target 1: Levels Of Organization Quiz

1. Which is the best example of a population?a. All the insects in North America b. All the white tailed deer on an island c. All the bacteria in a person's digestive tract d. All the single-celled creatures in a sample of pond water.

A

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D

The best example of a population is "All the white tailed deer on an island." This is because a population refers to a group of individuals of the same species that live in the same area and can interbreed. In this case, the white tailed deer on the island form a population as they are all of the same species and live in the same area, allowing for potential interbreeding.

Explanation

The best example of a population is "All the white tailed deer on an island." This is because a population refers to a group of individuals of the same species that live in the same area and can interbreed. In this case, the white tailed deer on the island form a population as they are all of the same species and live in the same area, allowing for potential interbreeding.

2. Which sequence is in order from the simplest level of organization to the most complex?a. organism > population >community > ecosystem > biome > biosphere b. biosphere > biome > ecosystem > community > population > organism c. organism > community > ecosystem > population > biome > biosphere d. population > community > organism > ecosystem > biosphere > biome

A

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D

The correct answer is A. The sequence "organism > population > community > ecosystem > biome > biosphere" is in order from the simplest level of organization to the most complex. At the simplest level, we have individual organisms. Populations are groups of organisms of the same species living in the same area. Communities are groups of populations living and interacting together. Ecosystems include all the living organisms and their physical environment in a particular area. Biomes are large-scale ecosystems with similar climatic conditions. The biosphere is the highest level of organization, encompassing all the ecosystems on Earth.

Explanation

The correct answer is A. The sequence "organism > population > community > ecosystem > biome > biosphere" is in order from the simplest level of organization to the most complex. At the simplest level, we have individual organisms. Populations are groups of organisms of the same species living in the same area. Communities are groups of populations living and interacting together. Ecosystems include all the living organisms and their physical environment in a particular area. Biomes are large-scale ecosystems with similar climatic conditions. The biosphere is the highest level of organization, encompassing all the ecosystems on Earth.

3. Which of the following best describes the level of biological organization that includes assemblages of different groups of species living within a define area?a. Organism c. Community b. Population d. Family

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D

The correct answer is "Community". A community refers to a group of different species living together in a specific area. It includes interactions between different populations and the overall relationships between species within the community. This level of biological organization is higher than the level of population, which refers to a group of individuals of the same species living in the same area. It is also higher than the level of organism, which refers to an individual living entity. Family, on the other hand, is a more specific category and does not encompass the broader concept of different groups of species living together in an area.

Explanation

The correct answer is "Community". A community refers to a group of different species living together in a specific area. It includes interactions between different populations and the overall relationships between species within the community. This level of biological organization is higher than the level of population, which refers to a group of individuals of the same species living in the same area. It is also higher than the level of organism, which refers to an individual living entity. Family, on the other hand, is a more specific category and does not encompass the broader concept of different groups of species living together in an area.

4. Collectively, all the biotic and abiotic components in a particular area are best described as which of the following?a. community c. niche b. ecosystem d. population

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The correct answer is "ecosystem". An ecosystem refers to the interaction between all living organisms (biotic) and their physical environment (abiotic) in a specific area. It includes plants, animals, microorganisms, soil, water, air, and other factors that contribute to the functioning of the ecosystem. A community refers to the different populations of species in an area, a niche refers to the role or position of a species within its environment, and a population refers to a group of individuals of the same species in a specific area.

Explanation

The correct answer is "ecosystem". An ecosystem refers to the interaction between all living organisms (biotic) and their physical environment (abiotic) in a specific area. It includes plants, animals, microorganisms, soil, water, air, and other factors that contribute to the functioning of the ecosystem. A community refers to the different populations of species in an area, a niche refers to the role or position of a species within its environment, and a population refers to a group of individuals of the same species in a specific area.

5. As Juaquin travels by train up a mountain, he observes that the terrain changes from coniferous trees to small shrubs. Which level of organization has most likely remained constant?a. population c. community b. ecosystem d. biosphere

A

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D

The biosphere refers to the global sum of all ecosystems, including all living organisms and their interactions with the atmosphere, hydrosphere, and lithosphere. In this scenario, as Juaquin travels up the mountain, the change in terrain from coniferous trees to small shrubs indicates a change in the ecosystem. Therefore, the level of organization that has most likely remained constant is the biosphere, as it encompasses all the ecosystems within it.

Explanation

The biosphere refers to the global sum of all ecosystems, including all living organisms and their interactions with the atmosphere, hydrosphere, and lithosphere. In this scenario, as Juaquin travels up the mountain, the change in terrain from coniferous trees to small shrubs indicates a change in the ecosystem. Therefore, the level of organization that has most likely remained constant is the biosphere, as it encompasses all the ecosystems within it.

6. A scientist studies the effects that barnyard grass, a weed, has on the growth of rice, other weeds, and insects. The barnyard grass and other weeds, rice, and insects make up which level of biological organization?a. population c. ecosystem b. community d. biome

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D

The barnyard grass, other weeds, rice, and insects make up a community. A community refers to a group of different species that interact and live together in a particular area. In this case, the scientist is studying the effects of barnyard grass on the growth of rice, other weeds, and insects, which indicates the presence of multiple species interacting within a specific area, thus making it a community.

Explanation

The barnyard grass, other weeds, rice, and insects make up a community. A community refers to a group of different species that interact and live together in a particular area. In this case, the scientist is studying the effects of barnyard grass on the growth of rice, other weeds, and insects, which indicates the presence of multiple species interacting within a specific area, thus making it a community.