Primarily we can say ecosystem is also an ecological unit which includes both living (biotic) as well as non-living (abiotic) components of a particular area. Ecosystem is known as the basic and functional unit of ecology………
There are various types of organisms present around us. The predicted number of total species on this earth varies from 5 to 50 million and the average at 14 million, but only 1.7 million have been described till today and the distribution is highly uneven………..
Nutrition is the biochemical and physiological process by which an organism use food to support its life. Plants are also living things; they have cells and tissues, they also grow in size and girth and most importantly they are the producers of the ecosystem………..
Our earth is about 4.5 billon years old. Life appeared on the earth about 4000 million years back i.e, 500 million years after the formation of Earth. There was no atmosphere in the early earth. Water vapour, methane, carbon dioxide and………..
“nothing lives forever, yet life continues.” Reproduction and death are two terminals of the life span, growth and survival come in the life span. The number of individuals died in a population should be restored by reproduction…………
in this article we are going to discuss about the energy changes so well before we discussing about energy changes you have to know that what is is the changes of energy what are the example of energy? what is energy transfer? what is energy transformations? and what is Free energy? what is Entropy? what are the laws of thermodynamics? what is open and close system what is steady system ? and what is Homeostasis?
The Molecular Basis of Life; Defining Life; Level of Organisation
Biology deals with living organisms. The living organisms are made up of protoplasm. Huxley (1868) has stated that protoplasm is the physical basis of life. At the molecular level there is no difference between nonliving object and living beings. Both exist on this earth and both are governed by same physico-chemical laws. Then, how are the living beings different from the nonliving?
Deserts are characterised by high temperature, bright light, colder nights and scarce animal and plant diversity.
Main deserts of the world are mainly located in the south western USA, Mexico Coastal areas of Chile and Peru (Atacama), North Africa (Sahara), South Africa (Kalahari), Asia (Tibet, Gobi, Thar) and central western Australia etc.
These ecosystems (biomes) have thick herbaceous plant cover, but have no trees These biomes are characterised by various species of grasses (family Graminae or Poaceae) Along with grasses many species of legumes (family Leguminosae) are also dominant in these biomes. These legumes make the soil nitrogen rich.
Forests are characterised by densely growing trees and a great biodiversity. About 19% of the land area in India is covered with forest. Important forest types are- (I) Tropical rain forests, (II) Tropical deciduous forests, (III)) Temperate broad leaf forests and Temperate needle leaf forests (Coniferous forests).
A large and natural ecosystem which has its peculiar climatic condition and specific flora and fauna is called a biome. Biomes are therefore large ecosystems. Biomes may be terrestrial and aquatic. Both these types have completely different characteristics.
Nitrogen is a very important and essential element for plants. We know that nitrogen is the most abundant gas in the air. Air contains 78% nitrogen. However it can not be used by plants directly similar to oxygen and carbon dioxide. This is because.
The nutrient cycle, which involves the movements of components between the ants and the soil only, are called internal nutrient cycling.
ecological efficiency of an ecosystem refers to the effectiveness, with which it maintains its dynamic nature. The effectiveness is usually expressed as energy
In this article we going to discuss about the Ecological Pyramids and it’s types so before we starting this come to the main point, The number, biomass and energy of the organisms in an ecosystem change gradually from producer level to the top consumer level.
Now you have an idea of food chain and food web. Two aspects with respect to energy flow through a food chain, must be noted Energy flow 1s always in one direction (from producers to consumers).
In an ecosystem, an isolated food chain does not exist. There is an interconnection of various food chains in ecosystem. This interconnection of many food chains is called as food web, A food web expresses the pattern of energy and nutrient flow, throughout the ecosystem.
Transferred to the primary consumers (or herbivores), which directly feed on the plants. From herbivores, the energy is transferred to the next trophic level of secondary consumers (primary carnivores). The energy from secondary consumers is finally transferred to the top carnivores or tertiary consumers.
Energy 1s the capacity to do work. Without energy no work can be done. Since all living organisms Work, they constantly require energy……..
At the age of 19 i just realised that people live in a culture where people are more offended by swear words and middle fingers than they are famine, warfare and the destruction of our environment.