Is it real that Ebola is the most dangerous virus on Earth?
What are the symptoms?
Where did this disease come from?
What is the fatality?
How many kinds of Ebolas are known today?
is it real that the disease has never infected an non-African person?
Please answer, I need it........... An extremely contagious filovirus causing an acute, highly fatal hemorrhagic fever and spread through contact with bodily fluids or secretions of infected persons and by airborne particles. symptoms:High fever
Headache
Muscle aches
Stomach pain
Fatigue
Diarrhea
Sore throat
Hiccups
Rash
Red eyes
Vomiting blood
Bloody diarrhea
Chest pain
Shock
Death
Blindness
Bleeding
Africa.
Hence, these two statistics types can differ: a short-lived disease like flu can have high annual incidence but low prevalence, but a life-long disease like diabetes has a low annual incidence but high prevalence. Go to wikipedia and learn all you can. I hope I am HELPFUL!
Plants are a major group of life forms and include familiar organisms such as trees, herbs, bushes, grasses, vines, ferns, mosses, and green algae. About 350,000 species of plants, defined as seed plants, bryophytes, ferns and fern allies, are estimated to exist currently. As of 2004, some 287,655 species had been identified, of which 258,650 are flowering and 15,000 bryophytes (see table below). Green plants, sometimes called metaphytes, obtain most of their energy from sunlight via a process called photosynthesis.
Definition
Aristotle divided all living things between plants (which generally do not move), and animals (which often are mobile to catch their food). In Linnaeus' system, these became the Kingdoms Vegetabilia (later Metaphyta or Plantae) and Animalia (also called Metazoa). Since then, it has become clear that the Plantae as originally defined included several unrelated groups, and the fungi and several groups of algae were removed to new kingdoms. However, these are still often considered plants in many contexts, both technical and popular. Indeed, an attempt to perfectly match "plant" with a single taxon is problematic, because for most people the term "plant" is only vaguely related to the phylogenic concepts on which modern taxonomy and systematics are based.
When the name Plantae or plants is applied to a specific taxon, it is usually referring to one of three concepts. From smallest to largest in inclusiveness, these three groupings are:
Land plants, also known as Embryophyta or Metaphyta. As the narrowest of plant categories, this is further delineated below.
Green plants - also known as Viridiplantae, Viridiphyta or Chlorobionta - comprise the above Embryophytes, Charophyta (i.e., primitive stoneworts), and Chlorophyta (i.e., green algae such as sea lettuce). It is this clade which is mainly the subject of this article.
Archaeplastida - also known as Plantae sensu lato, Plastida or Primoplantae - comprises the green plants above, as well as Rhodophyta (red algae) and Glaucophyta (simple glaucophyte algae). As the broadest plant clade, this comprises most of the eukaryotes that eons ago acquired their chloroplasts directly by engulfing cyanobacteria.
Informally, other creatures that carry out photosynthesis are called plants as well, but they do not constitute a formal taxon and represent species that are not closely related to true plants. There are around 375,000 species of plants, and each year more are found and described by science.
Algae
Green algae from Ernst Haeckel's Kunstformen der Natur, 1904.Main article: Algae
Most algae are no longer classified within the Kingdom Plantae; they are now included among the protists.[2][3] The algae comprise several different groups of organisms that produce energy through photosynthesis, each of which arose independently from separate non-photosynthetic ancestors. Most conspicuous among the algae are the seaweeds, multicellular algae that may roughly resemble terrestrial plants, but are classified among the green, red, and brown algae. Each of these algal groups also includes various microscopic and single-celled organisms.
Only two groups of algae are considered close relatives of land plants (embryophytes). The first of these groups is the Charophyta (desmids and stoneworts), from which the embryophytes developed.[4][5][6] The sister group to the combined embryophytes and charophytes is the other group of green algae (Chlorophyta), and this more inclusive group is collectively referred to as the green plants or Viridiplantae. The Kingdom Plantae is often taken to mean this monophyletic grouping. With a few exceptions among the green algae, all such forms have cell walls containing cellulose, have chloroplasts containing chlorophylls a and b, and store food in the form of starch. They undergo closed mitosis without centrioles, and typically have mitochondria with flat cristae.
The chloroplasts of green plants are surrounded by two membranes, suggesting they originated directly from endosymbiotic cyanobacteria. The same is true of two additional groups of algae: the Rhodophyta (red algae) and Glaucophyta. All three groups together are generally believed to have a common origin, and so are classified together in the taxon Archaeplastida. In contrast, most other algae (e.g. heterokonts, haptophytes, dinoflagellates, and euglenids) have chloroplasts with three or four surrounding membranes. They are not close relatives of the green plants, presumably acquiring chloroplasts separately from ingested or symbiotic green and red algae.
Fungi
Main article: Fungi
Fungi are no longer considered to be plants, though they were previously included in the plant kingdom. Unlike embryophytes and algae, fungi are not photosynthetic, but are saprotrophs: obtaining food by breaking down and absorbing surrounding materials. Fungi are not plants, but were historically treated as closely related to plants, and were considered to be in the purview of botanists. It has long been recognized that fungi are evolutionarily closer to animals than to plants, but they still are covered more in depth in introductory botany courses and are not necessarily touched upon in introductory zoology courses. Most fungi are formed by microscopic structures called hyphae, which may or may not be divided into cells but contain eukaryotic nuclei. Fruiting bodies, of which mushrooms are most familiar, are the reproductive structures of fungi. They are not related to any of the photosynthetic groups, but are close relatives of animals. Therefore, the fungi are in a kingdom of their own.
Diversity
About 350,000 species of plants, defined as seed plants, bryophytes, ferns and fern allies, are estimated to exist currently. As of 2004, some 287,655 species had been identified, of which 258,650 are flowering plants, 16,000 bryophytes, 11,000 ferns and 8,000 green algae.
Diversity of living plant divisions Informal group Division name Common name No. of living species
Green algae Chlorophyta green algae (chlorophytes) 3,800 [7]
Charophyta green algae (desmids & charophytes) 4,000 - 6,000 [8]
Bryophytes Marchantiophyta liverworts 6,000 - 8,000 [9]
Anthocerotophyta hornworts 100 - 200 [10]
Bryophyta mosses 10,000 [11]
Pteridophytes Lycopodiophyta club mosses 1,200 [3]
Pteridophyta ferns, whisk ferns & horsetails 11,000 [3]
Seed plants Cycadophyta cycads 160 [12]
Ginkgophyta ginkgo 1 [13]
Pinophyta conifers 630 [3]
Gnetophyta gnetophytes 70 [3]
Magnoliophyta flowering plants 258,650 [14]
Phylogeny
A proposed phylogeny of the Plantae after Kenrick and Crane[15] is as follows, with modification to the Pteridophyta from Smith et al.[16] The Prasinophyceae may be a paraphyletic basal group to all green plants.
Prasinophyceae (micromonads)
Streptobionta
Embryophytes
Stomatophytes
Polysporangiates
Tracheophytes Eutracheophytes Euphyllophytina Lignophytia
Spermatophytes (seed plants)
Progymnospermophyta 鈥?br>
Pteridophyta
Pteridopsida (true ferns)
Marattiopsida
Equisetopsida (horsetails)
Psilotopsida (whisk ferns & adders'-tongues)
Cladoxylopsida 鈥?br>
Lycophytina
Lycopodiophyta
Zosterophyllophyta 鈥?br>
Rhyniophyta 鈥?br>
Aglaophyton 鈥?br>
Horneophytopsida 鈥?br>
Bryophyta (mosses)
Anthocerotophyta (hornworts)
Marchantiophyta (liverworts)
Charophyta
Chlorophyta
Trebouxiophyceae (Pleurastrophyceae)
Chlorophyceae
Ulvophyceae
Embryophytes
Main article: Embryophyte
Dicksonia antarctica, a species of tree fern.Most familiar are the multicellular land plants, called embryophytes. They include the vascular plants, plants with full systems of leaves, stems, and roots. They also include a few of their close relatives, often called bryophytes, of which mosses and liverworts are the most common.
All of these plants have eukaryotic cells with cell walls composed of cellulose, and most obtain their energy through photosynthesis, using light and carbon dioxide to synthesize food. About three hundred plant species do not photosynthesize but are parasites on other species of photosynthetic plants. Plants are distinguished from green algae, which represent a mode of photosynthetic life similar to the kind modern plants are believed to have evolved from, by having specialized reproductive organs protected by non-reproductive tissues.
Bryophytes first appeared during the early Palaeozoic. They can only survive where moisture is available for significant periods, although some species are desiccation tolerant. Most species of bryophyte remain small throughout their life-cycle. This involves an alternation between two generations: a haploid stage, called the gametophyte, and a diploid stage, called the sporophyte. The sporophyte is short-lived and remains dependent on its parent gametophyte.
Vascular plants first appeared during the Silurian period, and by the Devonian had diversified and spread into many different land environments. They have a number of adaptations that allowed them to overcome the limitations of the bryophytes. These include a cuticle resistant to desiccation, and vascular tissues which transport water throughout the organism. In most the sporophyte acts as a separate individual, while the gametophyte remains small.
The first primitive seed plants, Pteridosperms (seed ferns) and Cordaites, both groups now extinct, appeared in the late Devonian and diversified through the Carboniferous, with further evolution through the Permian and Trias Some scientists believe all diseases came from other planets. And yes Ebola is very bad and very infectious. I remember alot of african dying because they were touching the dead bodies of people who got ebola. I dont know its part of their religion to touch a dead persons body. I cant remember the symptoms but i think the color of their skiin and eyes change Ebola is the common term for a group of viruses belonging to genus Ebolavirus, family Filoviridae, and for the disease which they cause, Ebola hemorrhagic fever. The viruses are characterised by a long, filamentous morphology surrounded by a lipid viral envelope. Ebola viruses are morphologically similar to the Marburg virus, also in the family Filoviridae, and share similar disease symptoms. Ebola has caused a number of serious and highly publicized outbreaks since its discovery.[1] Ebola is basically a disease that makes you bleed out of every possible place in your body. The fatality is near 90%.There are many different types. No, its started in Africa. There is a really good book on Ebola called the hot zone. it may not be the most dangerous, but it as at the top of my list of things i don't want to be infected with.
SYMPTOMS: bleeding, from everywhere, like skin, eyes, huge bruises.
i think it is one of the hemorrhagic fevers.
Last i knew there were 3 types of Ebola,
Ebola Marburg, Ebola Reston, Ebola ??? Zaire (maybe)
(no idea if there are more strains now)
fatality in early parts of a breakout is 95 percent or so. as it transmits through more and more people, the mortality drops to only about a third.
(Ebola reston didn't have human mortality, if i remember correctly)
Read
The Hot Zone
- it is a great book, the most exciting non-fiction book i have ever read.
disease appears to come from encroachment into non-habitable areas of Africa. It may have to pass through monkeys to mutate into the human strain.
No, not true. It has DEFINITELY affected non-African people.
wikpeida will tell you more. |
