Subject: Biology
Biodiversity is defined as the variation of living forms on earth which includes plants, animals, microorganisms, contains genes and form the complex ecosystem.
Biodiversity describes the diversity of life at the following three biological levels:
Species diversity:
Species diversity is the component of the biodiversity which is a group of plants or animals that are similar and able to breed and produce viable offspring under natural conditions.
Genetic diversity is the level of biodiversity that refers to the total number of genetic characteristics in the genetic makeup of the species and recessed in all of the individuals that comprise a particular species.
Ecosystem diversity:
Ecosystem diversity is the variation of habitats, community types, and abiotic environments present in a given area. Ecosystem diversity is evaluated through measures of the diversity of the components species.
Tourism:
The total number of species which are found on the earth surface is called biodiversity. Every species are different from each other. So, the tourist is attracted towards them are willing to know about them in detail which helps to develop tourism in the country. And the increase in tourism means the increase in country's economy.
Scientific research and investigation:
Biodiversity is also important for scientific research and investigation. With the help of biodiversity, the scientist can find out or research scientific things.
Medicine:
Every biodiversity is important in itself. From plants, we can discover various medicines used for various diseases. Medicines which are newly discovered are first observed on animals. So, we can say medicine is also one of the scopes of biodiversity.
Agricultural production:
The food product which we eat daily is obtained from the environment. With variation in these products, we get varieties of food.
Balance of ecosystem:
Biodiversity helps to maintain the ecological balance necessary for survival for not only plants and animals but also humans on earth because they depend on each other directly or indirectly for food.
Group of organism | Nepal (Known so far) | Global | Nepal Representation (%) |
Bacteria | NA | 3,000 to 4,000 | |
Lichens | 465 | 20,000 | 2.3 |
Fungi | 1,822 | 69,000 | 2.4 |
Algae | 687 | 26,000 to 40,000 | 2.6 |
Bryophytes | 853 | 16,600 | 5.1 |
Pteridophytes | 534 | 11,300 | 4.7 |
Gymnosperms | 27 | 529 | 5.1 |
Angiosperms | 5,856 | 220,000 | 2.7 |
Platyhelminthes | 168 | 12,200 | 1.4 |
Spiders | 144 | 73,400 | 0.2 |
Insects | 5,052 | 751,000 | 0.7 |
Butterflies and Moths | 6,402,253 | 112,000 | 2.6 |
Fishes | 182 | 18,150 | 1.0 |
Amphibians | 77 | 4,184 | 1.84 |
Reptiles | 118 | 6,300 | 1.87 |
Birds | 863 | 9,040 | 9.53 |
Mammals | 181 | 4,000 | 4.52 |
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