Biology, Definition Fact,History, Explanation

 History Of Classification  The history of the classification system can be tracked back to ancient times.  Greek philosopher Aristotle  (384-322BC) who was the first who classified organisms into two groups for example plants and animals. The Arab scholar abu Usman Umar Al_ Jahiz 781-869 DA describe the characteristics of 350 species of animals. He wrote a lot about the life of ants.The Italian botanist A ndrea Caesalpinia (1519-1603 AD)D ivide plants into 15 groups and called them genera. French botanist Tournefort  ort (1656-1708) introduce the taxa of class and species. The swedish biologist Carl Linnaeus (1707-1778 AD) created a taxonomic hierarchy of organism with seven Texas in kingdom,phylum, class, order,genus and species. "In 1172 Ibn Rushd (Averroes) translates Aristotle's book "de Anima " into Arabic. Classification Biology have identified about 2 million kingdoms of organisms. Out of these 0.5 million are the pin kinds of plants and 1.5 million a...

Biology  Definition  : Biology is the life of science the word biology comes from two Greek word "bio" mean life and "logos"study. It explorers The structures, functions and interactions of living organism. Major fields of biology Biology is a vast field that explores the incredible diversity of life on earth. To better understand this complexity, scientist have divided biology into three main fields. (1)Zoology It is study of animals including their structure function behaviour and diversity. (2)Botany It is study of plants including their structure growth reproduction and instructions with their environment. (3)Microbiology Micro the study of microorganisms such as bacteria and microscopic fungi is called microbiology it including the study of the structure function habitats and reproduction of microorganisms and their impact on health and environment. Branches are sub- field of biology Biology is divided into different branches to better understand the aspect of ...

 Biodiversity  Definition   "Biodiversity is a measure of the variety of living organism present different ecosystems including terrestrial Marine and desert ecosystem." Explanation  Biodiversity means the variety of organisms in a particular area. Biodiversity of an area is measured by considering the number of different kind of organisms and the variation with an each kind. Biologist have discovered and classified almost 2 million kind of organisms. Whoever they estimate that the total kind of organism on Earth is much greater. Biodiversity is not even the spread out. Dubai diversity is a place depend on factor like climate , altitude and soil type. Tropical regions have more biodiversity than popular regions. Importance of biodiversity. Biodiversity provide many essential services for humans and the planet. Here are more some key benefits of biodiversity. Ecosystem stability  biodiversity help to maintain the balance of ecosystem it player important role in...

 Scientists take specific steps for doing scientific work are research. These steps are called the scientific method . For biological research these steps are called biological method. The following steps are involve in scientific method. Recognitions of a scientific problem observations ,hypothesis deduction ,experiments and results (1) Recognitions of a scientific problem  The first step involves identifying and defining a scientific problem that scientist want to investigate. Such problem is either asked by someone are comes in biologist mind by himself. For example a biologist notice that plants is an area are growing taller than usual. He develops a scientific problem. What factors are responsible for increasing growth of these plant? This problem becomes the starting point for a scientific inquiry. (2) Observation Scientist make observations about the problem. They use five senses for making observation. They also read and study the previous researches on the same are r...

 Definition  Plastid are membrane bounded organelles present in the cell of plant and photosynthetic protist. There are three main type of plastids. Chloroplast ,chromoplast leucoplasts. Types (1) Chloroplasts Chloroplasts are the green plastid. They are present in the cell of green parts of plant and in algae they contain photosynthetic pigment for example the green chlorophyll. They carry out photosynthesis with the help of their pigments. They capture light energy convert it into chemical energy. They use this energy to prepare glucose. Like mitochondria chloroplasts are in closed by double membrane. On the internal side of inner membrane are in closed by double membrane. These stacks are called" grana". The sac- like structure which make a granum called" thylakoid". A fluid called stroma surrounding the thylakoid. Like mitochondria chloroplasts also contain DNA ribosomes. (2) Chromoplasts Are the plastids that contain pigments such as carotenoids. These pigment ...

 Cells are the microscopic structures that form the foundation of life. Cell are the units that carry out all the functions necessary for life. 2.1-Cell The cell is the basic unit of life. Just as bricks are the building blocks of a house cell are the building block of living organism including plants , humans and animals. Everything, from the smallest bacterium to the largest whale ,is made of cells. Most of the cell are very small and cannot be seen with the naked eye. Some cells are large enough to be seen with naked eye for example egg cell of ostrich . 2.2 structure of cell Basic structure of a cell was discovered by an English scientist Robert Hooke. In 1665 using a simple microscope ,Hooke examined as thin slices of crock and discovered tiny box like structure that he" called cell". He could not study the details of the internal structure of cell. However in the 19th century the quality of microscope improved. In 1831 while studying plant cells under a microscope, scie...