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Middle School
Strand 4: Organisms & Environments
| Term | Definition |
|---|---|
| dependent | reliant on something or someone else for support |
| ecosystem | the biotic and abiotic resources provided to support specific populations in a community |
| energy | a measurable quantity that describes how much change can occur within a system |
| energy pyramid | a model that shows the flow of energy from one trophic level to the next in an ecosystem |
| trophic level | organisms that are the same number of steps removed from the primary producers |
| biosphere | the biotic and abiotic factors required for life; made of all the ecosystems on Earth |
| inherited physical trait | variation in the characteristics of organisms received from a parent by genetic transmission |
| organism | an individual form of life, such as a plant, animal, bacterium, protist, or fungus |
| system | regularly interacting or interdependent group of items forming a unified whole |
| circulatory system | blood, vessels, & heart that functions to circulate the blood, provide nutrients & remove waste from cells |
| digestive system | the ingestion, digestion, and absorption of food and the discharge of residual wastes |
| endocrine system | the glands that produce endocrine secretions, that integrate and control bodily metabolic activity |
| immune system | the system that protects the body from foreign substances, cells, and tissues by producing the immune response |
| integumentary system | the external layer or covering (as in skin, hair, scales, feathers, or cuticle) of an organism |
| muscular system | system of muscles, which functions to allow movement of body parts for locomotion and other actions |
| nervous system | the system that in vertebrates is made up of the brain and spinal cord, & nerves |
| reproductive system | organs and parts which function in reproduction (to produce offspring) |
| respiratory system | a system of organs functioning in respiration for gas exchange; |
| skeletal system | a usually rigid supportive or protective structure or framework of an organism; |
| urinary system | made of the kidneys, ureters, urinary bladder, and urethra that function to remove waste from the body |
| tissue | an aggregate of cells usually of a particular kind together |
| cell | the basic unit of life |
| asexual reproduction | each offspring is identical to its parent |
| sexual reproduction | each offspring has more than one 'parent' and are genetically distinct from each parent |
| natural selection | |
| artificial selection | |
| trait | |
| population | |
| species | |
| bacteria | |
| fungi | |
| decomposition | |
| food web | |
| primary succession | |
| secondary succession | |
| biodiversity | |
| sustainability | |
| cell wall | |
| cell membrane | |
| cytoplasm | |
| chloroplast | |
| nucleus | |
| vacuole | |
| ribosome | |
| mitochondria | |
| chromosome | |
| gene |
Created by:
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