Found 454 Articles for Biology

A plant disease is any disturbance that usually interferes with function, economic value, normal growth, development and aesthetic quality of a plant. A plant disease can be caused by two general groups of casual agents which are pathogens and antipathogens.The different types of diseases usually occurring in plants are:Blights − When plants are suffering from blight or branches and leaves suddenly start withering, they stop to grow and then they die. After this process is continued for some time the parts of the plant start to rot.Cankers − Cankers are usually formed on woody stems where the stems may crack. ... Read More

Breviceps Macrops is known as the desert rain frog. This species belongs to the “Brevicipitidae” family, found only in Namibia and South Africa. The narrow strip of sandy shores that form in between the sea and the sand dunes is their natural habitat.The desert frog spends the day in a moist sand burrow dug up to the depth of 10-20cms. Unlike normal frogs, the desert frogs crawl and walk instead of hopping, as they have a stout body and webbed toes, hopping would be difficult.There are some interesting facts regarding this rare animal which is on the verge of extinct.The ... Read More

An alkaloid is a group of organic compounds of a plant origin they occur naturally and are chemical compounds which contain Basic nitrogen atoms alkaloids are produced by a large variety of both plants and animals or organisms like fungi and Bacteria Dr.Meissner was the first who coined the term who coined the term alkaloid And ascertained the alkaline nature of Solanaceae plants.Alkaloids are a class of basic nitrogen compounds which are occurring naturally. They can be both plant and animal origin. They have powerful physiological action on humans and can be easily identified in the drug form as their ... Read More

The answer is NO. The range of frequencies that humans and animals can hear is quite restricted, up to a maximum of 100–200 KHz. Wi-Fi uses up to 2.4 GHz (2,400,000 KHz) so it would not be possible for any creature to hear or detect Wi-Fi signal.