Levels of Organization

Which of the following best describes a population?

• All the organisms of a certain species in a given area

• All the organisms in a habitat that compete for resources

• One individual and all the organisms on which it depends

• All of the living organisms which can be found in an area

Which of the following lists includes only abiotic factors?

• Plants, animals, average daily temperature

• Rainfall amounts, average daily temperature, minerals in soil

• Minerals in soil, plants, rainfall amounts

• Animals, rainfall amounts, soil composition

Which of the following statements describes a community?

• One member of a species in a given area

• All of the members of a species in a given area

• All of the members of a species that live anywhere

• All of the different species of living things in an area

Which of the following correctly lists the levels of organization from least complex to most complex?

• Community, Organism, Population, Ecosystem

• Population, Community, Ecosystem, Organism

• Organism, Population, Community, Ecosystem

• Ecosystem, Population, Organism, Community

Which of the following is a description of an abiotic factor that makes up part of a desert habitat?

• Sparse growth of cottonwood trees

• Extremes of day and night temperatures

• Few large predators, such as coyotes

• Leafless, waxy-coated plant with sharp spines

Which organizational level of the ecosystem does a pack of wolves represent?

• Ecosystem

• Organism

• Population

• Community

A macaw is a type of parrot with colorful feathers that flies about in the upper canopy of trees in tropical rainforests. Macaws have a diet which includes fruits, leaves, nuts, and seeds of plants. Which of the following describes a biotic factor of the macaw’s habitat that provides a survival advantage for these birds?

• The colorful feathers are lost and regrow each year

• Some rainforest predators are able to climb trees

• Trees provide shelter and abundant food supplies

• During some periods, rain falls nearly every day

Tags

NGSS.MS-LS2-1

Which of the following descriptions represents the community level of organization?

• A single individual rabbit, of a certain species, living in a forest

• A group of rabbits, all of the same species, living in a forest

• All of the rabbits in a forest, as well as their predators and food plants

• All of the animals, plants, and non-living elements in a forest

At what level of organization in an ecosystem is an individual plant or animal?

• Population

• Organism

• Community

• Ecosystem

Ecosystem is the level of organization that is best described as including –

• only a single individual of a single species plant or animal.

• two species that live in the same habitat and depend on each other.

• all of the abiotic factors which characterize a geographic area.

• various species in an area and the abiotic factors on which they depend

Tags

NGSS.MS-LS2-3