Life started off on the planet with simplest form and gradually with evolution and passage of time new species derived from these simple forms, creating more than 1.8 million species of various kinds. Based on resemblances or variations of characteristics, species are classified…
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In this classification viruses, the connecting link between the living and the non-living world are not included. The Linnaean system includes-
This kingdom includes prokaryotes, organisms with primitive form of nucleus as the nucleus does not possess any defined nuclear membrane. The organisms are single-celled and absorb nutrition through their cell wall.
E.g. Bacteria, Cyanobacteria or blue-green algae (popularly called as BGA, are prokaryotes and are connecting link between chlorophyll containing algae and bacteria) and spirochetes, the spiral single cellular organisms.
Lately, the kingdom is further divided into two categories, Eubacteria or true bacteria and Archebacteria or bacteria like organisms capable of surviving in extreme environmental conditions like hot springs and volcanic expels.
This kingdom includes eukaryotes (Organisms with well defined nucleus, nuclear membrane and membrane bound cellular organelles are present). The organisms belonging to this category are single celled and are neither plants nor animals as they are diverse forms and need a separate group in the classification. Some of the organisms belonging to this category possess chlorophyll and therefore like plants, they can produce their own nutrition, while others procure nutrition by means of absorption and ingestion processes.
This group includes organisms that possess many cells and are called multicellular organisms. They are non-motile and their structure encompass hyphae and mycelium. These organisms do not possess chlorophyll and are dissimilar to plants. This group includes organisms of diverse size from microscopic yeast cells to large mushrooms. Fungi derive their nutrition by means of absorption. They proliferate on the dead as well as decaying organic matter and procure nutrition.
This kingdom includes multicellular organisms, with well defined nucleus, enclosed by nuclear membrane and
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“The first commercial food product developed from gene slicing (a term for a type of genetic modification) was the Flavr Savr tomato.” (Schneider and Schneider). The tomato was produced through the concept of genetic modification where it could naturally ripen on the vine and could be firm enough to withstand the shipping after it is harvested.
To come up with a given GMO, DNA molecules derived from different sources get combined to come up with a completely new set of genes, and a new molecule. This technique is generally referred to as recombinant DNA technology. The resulting new DNA molecule then acts as source of novel or modified genes by being transferred to an organism to which a modification or novelty is desired.
BIOLOGY: ORGANISMS Introduction The Amoeba proteus is a uni-cellular, relatively large freshwater protozoan, lacking a defined shape. The amoeba as a one-celled organism is able to function efficiently in its environment “despite lacking the levels of organization present in more complex organisms” (Hunter, 2008, p.112).
Kingdom Monera is mainly made up single-celled organisms. These organisms are prokaryotes, which means they do not have a nuclear membrane (Pinet 214). Prokaryotic cells do not have any organelles bound by membrane. Therefore,
This was a landmark work in evolutionary biology. Darwin reflected on the mutual resemblances of organic beings based on their embryological relations, their geographical distribution, geological succession, and other facts that
The web contains the following organisms, the Black Bear, Humans, the Lynx, the American Jewel Scarab, Gloeophyllum sepiarium and the Alaskan Paper Birch. The arrows in the illustration show the direction that energy is passed from each organism, therefore highlighting the relationship in the food chain and the trophic levels.
Based on the fact that the whole issue of GMOs rotates around a process where an organism has its genetic material altered using genetic techniques is in itself a cause for concern on the production, storage as well as the sale of the same. This therefore brings about the question over the possible reasons that bring about transatlantic disputes over GMO regulation.
Many animals can move from one place to another in search for food, better place to live or find mates while plants are immobile hence, cannot move from one place to another. Moreover, the life cycle of most plants involves an alternation between the
According to the author, organisms classified under Metazoans or the Kingdom Animalia have several characteristics: autotrophs; eukaryotic and multicellular; possess some form of skeletal support; reproduce sexually; specialized cells for specific purposes; and indicate degrees of organization including cell, system, tissue, and organ.