Tuesday, 16 September 2014

Does Euphorbia Cause Cancer..?

Euphorbia is the genus name for a group of approximately 2,100 plants. Depending on the species, the plants of the Euphorbia genus are native to Africa, Asia, parts of Europe, and the eastern and southwestern sections of the United States. The plants can be tree-like, cactus-like, or even weed-like. Among the most well-known species is Euphorbia pulcherrima, or the poinsettia. Many species of Euphorbia are toxic, but some species are used in alternative medicine practices.

The sap of many species of Euphorbia can cause irritation to the skin and eyes for people and animals. In fact, there have even been reports that, if a large section of a large plant is cut, it can release toxins into the air, causing people and animals to have breathing problems. As a result, caution should be used when handling these plants.

The weed-like E. peplus originated in Europe, but is now considered invasive in many areas across North America. It is also known as cancer weed or radium weed. It can grow to 12 inches (about 30.5 cm) tall and has green flowers that blend in with the green succulent-like leaves. Although the sap of this plant is toxic, it is often used by homeopathic medicine practitioners to remove warts, sunspots, and age spots. Some research has indicated that the sap may be useful for treating skin cancer as well.

Another plant in this genus, E. pekinensis or Peking spurge, often is used in Chinese medicine. It is sometimes used as an expectorant to soothe coughs. In addition, the roots are believed to reduce swelling in the body and face.

What is Ebola...?

Ebola is a disease of humans and other primates caused by an ebolavirus. Symptoms start two days to three weeks after contracting the virus, with a fever, sore throat, muscle pain and headaches. Typically, vomiting, diarrhea and rash follow, along with decreased functioning of the liver and kidneys. Around this time, affected people may begin to bleed both within the body and externally.

The virus may be acquired upon contact with blood or bodily fluids of an infected animal.Spreading through the air has not been documented in the natural environment. Fruit bats are believed to be a carrier and may spread the virus without being affected. Once human infection occurs, the disease may spread between people, as well. Male survivors may be able to transmit the disease via semen for nearly two months. To make the diagnosis, typically other diseases with similar symptoms such as malaria, cholera and other viral hemorrhagic fevers are first excluded. To confirm the diagnosis, blood samples are tested for viral antibodies, viral RNA, or the virus itself.

Prevention includes decreasing the spread of disease from infected animals to humans. This may be done by checking such animals for infection and killing and properly disposing of the bodies if the disease is discovered. Properly cooking meat and wearing protective clothing when handling meat may also be helpful, as are wearing protective clothing and washing hands when around a person with the disease. Samples of bodily fluids and tissues from people with the disease should be handled with special caution.

No specific treatment for the disease is yet available.Efforts to help those who are infected are supportive and include giving either oral rehydration therapy (slightly sweet and salty water to drink) or intravenous fluids.The disease has a high risk of death, killing between 50% and 90% of those infected with the virus.EVD was first identified in Sudan (now South Sudan) and the Democratic Republic of the Congo. The disease typically occurs in outbreaks in tropical regions of sub-Saharan Africa.From 1976 (when it was first identified) through 2013, the World Health Organization reported a total of 1,716 cases.The largest outbreak to date is the ongoing 2014 West African Ebola outbreak, which is affecting Guinea, Sierra Leone, Liberia and Nigeria. As of 26 August 2014, 3,069 suspected cases resulting in the deaths of 1,552 have been reported.Efforts are under way to develop a vaccine; however, none yet exists.

Is an Onion a Leaf or a Root !

The onion is actually a bulb or very big bud. the bulb comprises fleshy layers of modified leaves, surrounded by a papery outer layer.
           Onions are used in many dishes. They have a distinctive,strong flavour and pungent odour which is mellowed by cooking. Onions have medicinal use too.


Monday, 15 September 2014

Why is it Possible for a Tree to Heal itself !

A tree can be wounded by natural causes like fire, ice, stroms, and wind or by attacks made by men or animals.In the beginning, the wound 'bleeds', and sap leaks out from the opening. Then, a tissue forms at the edges of the wound,which stops the oozing, and protects the inner tissues. cells from the growth tissue around the edges begin to multiply, and grow inwards till they meet in the centre, and healing is complete. if the wound is very large however, there will be a permanent scar on the tree.

Do Plants Sleep !

In a sense, all plants sleep, when the sun goes down and there is no light.Photosynthesis cannot takeplace when it is dark, and the plants cannot make food. They close down the stomata and respiration alone continues. Some specie of Calathea, Ctenanthe and especially Maranta, fold their leaves or roll their leaves up at night.

Which plants have no flowers

Ferns, mosses and conifers are non flowering plants. Ferns and mosses have spores, which fall on the ground and develop into a new structure. This structure produces the male and the female cells from which new plants develop. Conifer seeds develop inside a protective cone. When mature,the scales of the cone usually spread open, allowing the seeds to fall out and be dispersed by the wind.

Online Assignment- Science Club