SOL LS.7 & 8 - Interactions among Populations

SOL LS.7 & 8 Life Science Middle Home

SOL LS.7 Interactions within Populations
The student will investigate and understand that interactions exist among members of a population. Key concepts include competition, cooperation, social hierarchy, territorial imperative influence of behavior on a population. Kinds of Interactions Individual members of a population interact with each other. These interactions include competing with each other for basic resources, mates, territory, and cooperating with each other to meet basic needs. The establishment of a social order in a population may ensure that labor and resources are adequately shared. The establishment of a territory ensures that members of a population have adequate habitat to provide for basic resources. Individual behaviors and group behaviors can influence a population. Animals exhibit needs for food, water, gases, shelter and space for which they compete. These needs may often be met in a range of conditions. Too much may be as harmful as too little (e.g., too much food or too little water). categorize behaviors as examples of competition, cooperation, social hierarchy, or territorial imperative.

SOL LS.7 Interactions within Populations

competition, cooperation, social hierarchy, territorial imperative
influence of behavior on a population.

Kinds of Interactions

Individual members of a population interact with each other. These interactions include competing with each other for basic resources, mates, territory, and cooperating with each other to meet basic needs.
The establishment of a social order in a population may ensure that labor and resources are adequately shared.
The establishment of a territory ensures that members of a population have adequate habitat to provide for basic resources.
Individual behaviors and group behaviors can influence a population.
Animals exhibit needs for food, water, gases, shelter and space for which they compete.
- These needs may often be met in a range of conditions.
- Too much may be as harmful as too little (e.g., too much food or too little water).

categorize behaviors as examples of competition, cooperation, social hierarchy, or territorial imperative.

SOL LS.8 Interactions among Populations
The student will investigate and understand interactions among populations in a biological community. Key concepts include the relationships among producers, consumers, and decomposers in food webs the relationship between predators and prey competition and cooperation symbiotic relationships niches Sharing Basic Needs Organisms or populations that rely on each other for basic needs form interdependent communities. Energy resources of a community are shared through the interactions of producers, consumers, and decomposers. The interaction between a consumer that hunts for another consumer for food is the predator-prey relationship. In a community, populations interact with other populations by exhibiting a variety of behaviors that aid in the survival of the population. Organisms may exist as members of a population; populations interact with other populations in a community. Populations of one species may compete with populations of other species for resources. Populations of one species may also cooperate with populations of other species for resources. A symbiotic relationship may exist between two or more organisms of different species when they live and work together. Symbiotic relationships include mutualism (in which both organisms benefit), commensalism (in which one organism benefits and the other is unaffected), and parasitism (in which one organism benefits and the other is harmed). Each organism fills a specific role or niche in its community.

SOL LS.8 Interactions among Populations

the relationships among producers, consumers, and decomposers in food webs
the relationship between predators and prey
competition and cooperation
symbiotic relationships
niches

Sharing Basic Needs

Organisms or populations that rely on each other for basic needs form interdependent communities.
Energy resources of a community are shared through the interactions of producers, consumers, and decomposers.

The interaction between a consumer that hunts for another consumer for food is the predator-prey relationship.
In a community, populations interact with other populations by exhibiting a variety of behaviors that aid in the survival of the population.
Organisms may exist as members of a population; populations interact with other populations in a community.
Populations of one species may compete with populations of other species for resources. Populations of one species may also cooperate with populations of other species for resources.

A symbiotic relationship may exist between two or more organisms of different species when they live and work together.

Symbiotic relationships include mutualism (in which both organisms benefit), commensalism (in which one organism benefits and the other is unaffected), and parasitism (in which one organism benefits and the other is harmed).
Each organism fills a specific role or niche in its community.