Basic Ecological Concept
Basic Ecological Concept
Levels of Organization
Cells- are composed of Cell Membrane, Nucleus and Protoplasm.
Tissue-is an aggregation of cells performing a common function or functions.
Organs- is the aggregation of tissues usually forming a definite shapes, and performing a definite function within an organ system.
Organ System-is a group of organs that perform coordinated functions together to keep the organism alive and functioning well.
The scope of the biology includes the study of all these and may extend to the level of the organism such as behavior, and the organism mechanism for interacting with its environment.
Ecology started from the study of the organism-a group of organisms that is similar in appearance, behavior and genetic make up belong to the same species. The biological species concept state that members of a species are those individual that are genetically related enough to be able to interbreed and produce fertile offspring.
Population
The group of the individuals belonging to one species and is found together in a define area at a certain time. A population possesses characteristics that more empirically describe the group such as: population Density, Dispersion, Natality, Mortality, Growth, Age Distribution, and Reproductive potential.
Population Density
Describe the degree of crowdedness of a population in a given area. Crude Density may be computed from the number of individuals or the total population biomass per unit space. Ecological or specific Density describes the number or biomass per unit of space that is actually available to the population.
Dispersion
The distribution of organisms over the space where they are found. Three pattern have been observed: clumped, random, and uniform. The clumped Distribution is the most common type of pattern since the soil or medium on which organisms are found in nature are not uniform. Random Distribution is rare in nature, occurring only where the soil is generally rich so that the
Levels of Organization
Cells- are composed of Cell Membrane, Nucleus and Protoplasm.
Tissue-is an aggregation of cells performing a common function or functions.
Organs- is the aggregation of tissues usually forming a definite shapes, and performing a definite function within an organ system.
Organ System-is a group of organs that perform coordinated functions together to keep the organism alive and functioning well.
The scope of the biology includes the study of all these and may extend to the level of the organism such as behavior, and the organism mechanism for interacting with its environment.
Ecology started from the study of the organism-a group of organisms that is similar in appearance, behavior and genetic make up belong to the same species. The biological species concept state that members of a species are those individual that are genetically related enough to be able to interbreed and produce fertile offspring.
Population
The group of the individuals belonging to one species and is found together in a define area at a certain time. A population possesses characteristics that more empirically describe the group such as: population Density, Dispersion, Natality, Mortality, Growth, Age Distribution, and Reproductive potential.
Population Density
Describe the degree of crowdedness of a population in a given area. Crude Density may be computed from the number of individuals or the total population biomass per unit space. Ecological or specific Density describes the number or biomass per unit of space that is actually available to the population.
Dispersion
The distribution of organisms over the space where they are found. Three pattern have been observed: clumped, random, and uniform. The clumped Distribution is the most common type of pattern since the soil or medium on which organisms are found in nature are not uniform. Random Distribution is rare in nature, occurring only where the soil is generally rich so that the