Biological Levels Of Organization

Levels of Organization

Hello friends, welcome to "Home Learning Hub-Great Home Learning To All". If you want to gain knowledge about biological levels of organization then you are on the right place so let's gets started.

Biological Levels Of Organization

Subatomic and Atomic Level
Molecular Level 
Organelle and Cell Level
Tissue Level 
Organ and Organ System Level
Individual Level
Population Level 
Community Level
Biosphere Level

Subatomic and Atomic Level:

Matter is made up of  different kinds of elements and an element is composed of same kinds of atoms. Atom is made up of subatomic particles in which most important are electrons, protons and neutrons(protons and neutrons are present inside the nucleus of an atom while electrons are revolving in orbits or shells or energy levels around the nucleus). 

About 92 elements occur in nature from which only 16 elements are called bioelements(bioelements are those elements which take part in making the body mass of living organisms) from which only 6 elements make 99% of total mass which are oxygen(65%), carbon(18%), hydrogen(10%), nitrogen(3%), calcium(2%), phosphorus(1%).

Molecular Level:

In living organisms, bioelements usually do not occur in isolated form rather they combine and occur as as a stable particle called as molecule or biomolecule through ionic bonding or covalent bonding.

Living organisms are formed by hundreds of different kinds of biomolecules and those molecules are the building materials. These molecules can be classified as micromolecules as those molecules having low molecular weight such as glucose and water and macromolecules as those molecules having high molecular weight such as starch, proteins and lipids.

Organelle and Cell Level:

Different types of biomolecules combine to form organelles and organelles are actually the sub cellular structures and when they assemble cells are formed. Different organelles are specialized to perform different functions that is each organelle is specialized to perform a specific a function.

Tissue Level:

Different types of cells combine together for the performance of a similar function is known as tissue. In tissues, each cell is carrying its own life processes but it also performs some special processes related to the function of a tissue for example epidermal tissue and ground tissue(plant tissues) and nervous tissue and muscular tissue(animal tissues).

Organ and Organ System Level:

Different kinds of tissues combine together for the performance of a similar function and make a unit known as organ such as stomach is an organ for the digestion of protein and for storing food.

Different kinds of organs combine together to perform some related function and are organized together in the form of an organ system. Each organ in an organ system performs its specific function and all the functions of all the organs become the function of the whole organ system.

Individual Level:

Different organs and organ systems combine together to form an individual or organism and in an individual or living organism the functions, processes and activities of different organs and different organ systems are coordinated.

Population Level:

Population is formed when group of individuals or organisms of the same species(group of organisms which can interbreed among themselves freely and can produce fertile offspring similar to themselves) live in the same habitat(place in an environment where an organism lives) at the same time.

Community Level:

Different populations combine and interacting with each other within the same environment forms a community such as a forest. Some communities are complex such as a forest while some communities may be simple.

Biosphere Level:

Place on the Earth where life exists forms biosphere and in a biosphere all ecosystems(ecosystem is a place where living organisms interact with the non living things or non living components of the environment) are present.