Print Document or Download PDF

Essay on Biosphere - 1000 Words

Feed by Manisha Cat- Essay

Essay in very simple language with the boundaries of different words here. Here you can find Essay on Biosphere in English language for 5, 6, 7, 8, 9, 10, 11, 12 and banking or other competitive exams students in 1000 words.

The biosphere is defined as the part of the Earth and the atmosphere in which many small ecosystems are present and operated. The three main subdivisions of the biosphere are lithosphere (solid substances); Hydrosphere (fluid), and the gaseous envelope of the Earth or Atmosphere which extends to a height of 22.5 km. The area of ​​contact and conversation between these components is really important for life, because it is here that the whole life is limited and there are basic processes of life like photosynthesis and respiration.

Living organisms are mostly limited to those parts of biology that receive solar radiation during the day. As mentioned above, it includes atmospheres, land surface, few meters of soil and upper layers of oceans, lakes and rivers water. Enlightened area A tributary of a river can be a few centimeters in water, and may be up to 100 meters in the most obvious part of the ocean. In the ocean, the biosphere does not end where the light ends in the form of gravity, the energy flows downward, because the foil pellets, cast hides and the creatures are falling in depth from the enlightened areas, both dead and alive.

In addition to the expansion of the biosphere, there is a limited extension too. On very high mountains like the Himalayas, the extent to which chlorophyll-bearing plants can not survive, they take approximately 6,200 meters.

In simple words, the biosphere can be seen as part of the Earth, in which the surface of the oceans and the continents, along with the adjacent environment (i.e. tropical) However, the high mountain slopes above the polar ice caps and the snow line are known as the aberration.

Since living organisms require inorganic metabolites from every subdivision of the biosphere, water from hydrosphere, minerals from lithosphere and chemical elements from the atmosphere, hence a brief discussion on nature and the work of each subdivision helps us to know the mechanism The activities of living organisms affect metabolism.


The atmosphere is of great importance for life because all the components of the air (except inactive ones) act as metabolites, and each chemical element spreads through the cycle maintaining the continuous supply of metabolism. It is at this stage that on the interface of biological subdivisions, the role of environment and importance of organisms emerges for the organisms. The metabolic role of some important gases in the following pages will highlight the importance of the atmosphere.

Green plants contain various types of inorganic elements and compounds. For example, during the process of converting solar energy into chemical energy, atmospheric carbon dioxide enters the living world as the basic component of all organic compounds. Carbon dioxide with water is used by all plants to produce organic materials such as glucose, an important molecule in living things, and oxygen.

The chemical reaction involved in the process is as follows:

Thus, photosynthesis provides food for us to eat and eat oxygen to breathe. Here, carbon and oxygen supplied by carbon dioxide live in the living substance until death. After the dissolution of living matter, CO2 returns to the atmosphere to complete the cycle. At this point we should remember that photosynthesis occurs only in the large population of chlorophyll bearing organisms, i.e., green and purple bacteria, blue green algae and high plants.

An important constituent of the atmosphere oxygen enters the living world through respiration, which is a familiar process in both plants and animals, including humans. Through this, glucose molecules are converted to the energy required for various activities. Respiratory and photosynthesis simultaneously form a cycle which is called photosynthesis - respiratory cycle, which can be portrayed as following:

The atmospheric carbon dioxide not only fills through the process of respiratory or biological oxidation, but also fuels through combustion of fuel and volcanic eruptions. The other important component in this cycle is water.

Nitrogen is also an essential component of living systems. This is essential for organisms for the synthesis of proteins, nucleic acids, and other nitrogenous compounds. In nature, atmospheric nitrogen is determined by special organisms. There are industrial processes for converting atmospheric nitrogen into fertilizers.

The movement of materials through living organisms involves many more substances compared to those contained in water and carbon dioxide. In addition to carbon, oxygen, hydrogen and nitrogen, all organisms require phosphorus, sulfur, sodium, potassium, calcium, magnesium, iron, manganese, cobalt, copper, zinc and perhaps chlorine, and some definitely need special functions, aluminum , Boron, bromine, iodine, selenium, molybdenum, vanadium, silicon, strontium, barium and possibly nickel.


You know that water is the most important component of protoplasm; Therefore it is necessary for life in all living organisms. In metabolism, it is the only source of hydrogen and is one of the many sources of oxygen.

Earth is sometimes called the planet of water, because it is the only planet in the Solar System, in which there is abundant supply of water. The oceans make up 71 percent of the Earth's surface area. Water evaporates with the help of solar energy and walks in the atmosphere. After the rash of high altitude, water vapor is cooled to form clouds which come out in the form of rain or ice, and thus, the water water system returns to the hydrosphere.

Water is used as raw material for various metabolic processes. Living creatures mainly attract hydrosphere. During the metabolic process, the water consumed by organisms is partially lifted back into the environment and the portion used for the production of organisms is returned to the environment after their death and decay.


The other sub-division of the biosphere is lithosphere, which helps in the metabolic process in two ways. One, it is the only source of most minerals for organisms related to terrestrial or aquatic conditions, and two, it primarily produces the soil required by terrestrial plants.

Keeping in view, two basic processes of life namely, photosynthesis and respiration examine the three major subdivisions of the biosphere in our above paragraphs.

Thus, in reality, the biosphere is the largest fixed unit of natural landscape in which many small ecosystems operate.

Read More.

Go Back