Botany
Ecology/ Nitrogen cycle
More Articles
- Ecology/ Nitrogen Cycle
- Biology-Introduction
- What is Living
- Classification of Organism
- Study of Cell - Cytology
- Genetics
- Sex Determination in Human
- Organic Evolution
- Classification of Plantae / Virus & Bacteria
- Plant Morphology
- Plant Tissue
- Photosynthesis
- Plant Hormones
- Plant Diseases
- Pollution
- Classification of Animal Kingdom
- Animal Tissue
- Human Blood
- System of the Human Body
- Nutrients
- Biotechnology & Applied Biology
- Human Diseases
- Medicinal Discoveries, Important information and Facts
Ecology/ Nitrogen cycle
- Study of inter relationship between living organisms and their environment.
- Environment include both biotic and abiotic factors.
- Various population of living in a definite geographical region is called Biotic Community.
- Ecosystem or Ecological system word was first coined by the scientist namely Tansley.
Every ecosystem is made up of two components –
(A) Biotic component – Living part
(B) Abiotic component – Non living part
A. Biotic components:
It is divided into three parts –
1. Producer 2. Consumer 3. Decomposers
1. Producer:
Those components that make their own food. Like – green plants.
2. Consumer:
Those components that consumes the food made by plant. Consumers are of three types –
a. Primary consumers:
In this category those organisms are included that lives on green plants or some parts of them.
b. Secondary consumers:
In this category those organisms are included that depends on the primary consumers as their food. Like – fox, wolf, peacocks etc.
c. Tertiary consumers:
In this category those organism are included that depends on the secondary consumers. Like – Tiger, lion, cheetah etc.
3. Decomposers:
Mainly fungi and bacteria are included in this category. These decomposes dead producers and consumers and changes them into physical elements.
B. Abiotic component:
Abiotic components are as follows –
1. Carbonic substance, 2. Non-carbonic substance, 3. Climatic factor
Example: water, sun-light, temperature, air, humidity, soil, minerals etc.
- Food chain: transfer of energy from the producer through a series of organisms.
Ex: Grass → Goat →Human.
Where grass is producer while goat and human are primary and secondary consumer. Man is primary as well as secondary consumer.
- The term steppe is associated with bio-region grass lands.
- About 2 % of the world’s land area is tropical rainforest.
- Beef is the world growing appetite for food product which is the leading cause of tropical deforestation.
- Two components of ecosystem are biotic and abiotic.
- The resources which are obtained by biosphere and have life called Biotic resources.
- B-Diversity is also known as ecosystem diversity.
- Biosphere reserve: An ecosystem with plants and animals protected by law to support conservation of natural resources and help in learning as well as research for sustainable development.
- Dr. Dhrubajyoti Ghosh is associated with ecology, who work on the east Kolkata wetland and its wise use.
- Red Data Book deals with plants on the verge of extinction.
- Thermosphere lies above the mesosphere in which region temperatures increases with height.
- The sphere of living matter together with water and soil on the surface of earth is called lithosphere.
Nitrogen Cycle
- Nitrogen fixation is a process in which free atmospheric nitrogen is converted by living
- Organism into nitrogenous compound that can be used by plant.
- Ammonification : Formation of ammonia from organic compound like proteins and nucleic acid by micro organism.
- Nitrification : A process in which ammonia is converted into nitrites and nitrates by Nitrobacteria.
- Plants use nitrogen mostly in the form of nitrate.
- Denitrification : It is the process of converting fix nitrogen like nitrates, nitrites and ammonia into free nitrogen by denitrifying bacteria eg Pseudomonas.
More Related Articles
Biology: Branch of science in which scientific study of life is done. Bios = Life and Logos = Study. Therefore study of life is called Biology. The term biology was first coined by Lamarck an
The word living cannot be defined. Living organism mostly uses solar energy. There are certain characters by which living can be distinguished from non living. 1. Growth: Increase in the numb
There are millions of organisms. It is impossible to study each individual separately. Classification means to categories organism into different groups. Study of an individual of a group gives us
Study of cell is called cytology. Cell-Cytology, Main features & function, Types of cell, Plant cell, Animal cell, Cell structure, Protoplasm, Cell membrane, Chromosome, DNA, RNA, Protoplasm,
Transmission of character from one generation to next generation is called heredity. The process of transfer of hereditary character from generation to generation is called genetics. The name g
In human male sex chromosome is ‘XY’, where as in female sex chromosome is XX. During gamete formation in male half of the sperm contain ‘X’ chromosome while other half contain
More and more creation of organism by gradual change from low categories organism to higher organism is called organic evolution. There are several evidence regarding organic evolution. Homologo
The study of different types of trees & plants is called Botany. Theophrastus is called the father of Botany. Aristotle is known as father of biology. In the year 1883, Eicher has classifie
Morphology: The study of forms and features of different parts of plants like roots, stems, leaves, flowers, fruits etc is called Morphology. Root Root is the descending part of the plant whi
Tissue: The group of cells having common origin, and usually perform a common function. Types of plant tissue A. Meristematic tissue: Growing regions of the plants are called Meristem.