Introduction
Biology is the scientific study of life. It is a natural science with a broad scope but has several unifying themes that tie it together as a single, coherent field. For instance, all organisms are made up of cells that process hereditary information encoded in genes, which can be transmitted to future generations. Another major theme is evolution, which explains the unity and diversity of life. Energy processing is also important to life as it allows organisms to move, grow, and reproduce. Finally, all organisms are able to regulate their own internal environments.
Biologists are able to study life at multiple levels of organization, from the molecular biology of a cell to the anatomy and physiology of plants and animals, and evolution of populations. Hence, there are multiple subdisciplines within biology, each defined by the nature of their research questions and the tools that they use. Like other scientists, biologists use the scientific method to make observations, pose questions, generate hypotheses, perform experiments, and form conclusions about the world around them.
Life on Earth, which emerged more than 3.7 billion years ago, is immensely diverse. Biologists have sought to study and classify the various forms of life, from prokaryotic organisms such as archaea and bacteria to eukaryotic organisms such as protists, fungi, plants, and animals. These various organisms contribute to the biodiversity of an ecosystem, where they play specialized roles in the cycling of nutrients and energy through their biophysical environment. (Full article...)
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Botany, also called plant science (or plant sciences), plant biology or phytology, is the science of plant life and a branch of biology. A botanist, plant scientist or phytologist is a scientist who specialises in this field. The term "botany" comes from the Ancient Greek word βοτάνη (botanē) meaning "pasture", "herbs" "grass", or "fodder"; βοτάνη is in turn derived from βόσκειν (boskein), "to feed" or "to graze". Traditionally, botany has also included the study of fungi and algae by mycologists and phycologists respectively, with the study of these three groups of organisms remaining within the sphere of interest of the International Botanical Congress. Nowadays, botanists (in the strict sense) study approximately 410,000 species of land plants of which some 391,000 species are vascular plants (including approximately 369,000 species of flowering plants), and approximately 20,000 are bryophytes.
Botany originated in prehistory as herbalism with the efforts of early humans to identify – and later cultivate – plants that were edible, poisonous, and possibly medicinal, making it one of the first endeavours of human investigation. Medieval physic gardens, often attached to monasteries, contained plants possibly having medicinal benefit. They were forerunners of the first botanical gardens attached to universities, founded from the 1540s onwards. One of the earliest was the Padua botanical garden. These gardens facilitated the academic study of plants. Efforts to catalogue and describe their collections were the beginnings of plant taxonomy, and led in 1753 to the binomial system of nomenclature of Carl Linnaeus that remains in use to this day for the naming of all biological species. (Full article...)Selected picture -
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Richard Dawkins FRS FRSL (born 26 March 1941) is a British evolutionary biologist, zoologist, and author. He is an emeritus fellow of New College, Oxford, and was Professor for Public Understanding of Science in the University of Oxford from 1995 to 2008. His 1976 book The Selfish Gene popularised the gene-centred view of evolution, as well as coining the term meme. Dawkins has won several academic and writing awards.
Dawkins is well known for his criticism of creationism and intelligent design as well as for being a vocal atheist. Some fellow academics have described Dawkins as a secular or atheist fundamentalist. Dawkins wrote The Blind Watchmaker in 1986, arguing against the watchmaker analogy, an argument for the existence of a supernatural creator based upon the complexity of living organisms. Instead, he describes evolutionary processes as analogous to a blind watchmaker, in that reproduction, mutation, and selection are unguided by any sentient designer. In 2006, Dawkins published The God Delusion, writing that a supernatural creator almost certainly does not exist and that religious faith is a delusion. He founded the Richard Dawkins Foundation for Reason and Science in 2006. Dawkins has published two volumes of memoirs, An Appetite for Wonder (2013) and Brief Candle in the Dark (2015). (Full article...)General images -
Did you know -
- ... that the p19 protein (dimer pictured) evolved in an arms race between plants and viruses?
- ...that there are about a million nephrons in a human kidney?
- ... that the semi-aquatic grasshopper Cornops aquaticum is being trialled in South Africa as a biological control agent for the invasive water hyacinth?
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A complete list of scientific WikiProjects can be found here. See also Wikispecies, a Wikimedia project dedicated to classification of biological species.
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