Levels Of Biological Organization PDF

Levels of Biological Organization CELLS Cells are the basic units of structure and function in the human body, as they are in all living things. Each cell carries out basic life processes that allow the body to survive. 2 TISSUES A tissue is a group of connected cells that have a simil...

Levels of Biological Organization CELLS Cells are the basic units of structure and function in the human body, as they are in all living things. Each cell carries out basic life processes that allow the body to survive. 2 TISSUES A tissue is a group of connected cells that have a similar function. There are four basic types of human tissues: epithelial, muscle, nervous, and connective tissues. 3 ORGAN An organ is a structure that consists of two or more types of tissues that work together to do the same job. Examples of human organs include the brain, heart, lungs, skin, and kidneys. 4 ORGAN SYSTEM An organ system is a group of organs that work together to carry out a complex overall function. Each organ of the system does part of the larger job. 5 ORGANISM An individual form of life that is capable of growing, metabolizing nutrients, and usually reproducing. 6 POPULATION A population is a group of organisms belonging to the same species that live in the same area and interact with one another. 7 COMMUNITY A community is all of the populations of different species that live in the same area and interact with one another. A community is composed of all of the biotic factors of an area 8 ECOSYSTEM An ecosystem includes the living organisms (all the populations) in an area and the non-living aspects of the environment. 9 BIOSPHERE The biosphere is the part of the planet with living organisms. The biosphere includes most of Earth, including part of the oceans and the atmosphere. 10