Science > Physics > Force > Concept of Force When we push, pull, kick, lift, throw, flick, hit, pick, squeeze, press, inflate, open, close an object we say a force is applied on the object. These actions are nothing but the application of force. Whatever may be the method of application of the force, they […]
Science > Biology > Applied Biology > Human Health and Diseases > Transmission and Types of Communicable Diseases Transmission of Communicable Diseases Infectious diseases can be transmitted either directly or indirectly Direct transmission of Diseases: In this case, the pathogens are transmitted from an infected person to a healthy person directly without any intermediate agent. […]
Science > Biology > Applied Biology > Human Health and Diseases > Communicable or Infectious Diseases Communicable diseases are those diseases which spread from one person to another through a variety of ways that include: contact with blood and bodily fluids; breathing in an airborne virus; or by being bitten by an insect. They are […]
Science > Biology > Applied Biology > Human Health and Diseases > Disease A major cause of ill health is ignorance, for example, ignorance about a balanced diet, or about the harmful effect of tobacco and alcohol. To achieve and maintains good health, basic knowledge about the body should be a part of education. Good […]
Science > Biology > Applied Biology > Human Health and Diseases > Community Hygiene Some health measures can be undertaken only by the community as a whole. Community hygiene includes water source protection, proper disposal of solid waste and excreta, wastewater drainage, controlling animal rearing and market hygiene. It is the responsibility of the community leader with legal […]
Science > Biology > Applied Biology > Human Health and Diseases > Personal and Domestic Hygiene Health does not simply mean the absence of disease or physical fitness. The World Health Organization (WHO) defines health as a state of physical, mental and social well-being and not merely the absence of disease or infirmity. Thus WHO […]
Science > Biology > Botany> Morphology of Plants > The Leaf The body of a typical flowering plant can be divided into the underground root system and aerial shoot system. The shoot system is heterogeneous. The shoot system (stem) is an aerial and erect part of the plant body that grows upwards. It is usually above […]
Science > Biology > Botany> Morphology of Plants > Modification of Stem In this article, we shall study the modification in stem in some plants for performing the functions other than its primary function. Primary functions of the stem are To support and orient the leaves in a manner that they are exposed to maximum sunlight […]
Science > Biology > Botany> Morphology of Plants > The Stem and Buds The body of a typical flowering plant can be divided into the underground root system and aerial shoot system. The shoot system is heterogeneous. The shoot system (stem) is an aerial and erect part of the plant body that grows upwards. It is usually […]
Science > Biology > Botany> Morphology of Plants > Modification of Roots In this article, we shall study the modification of roots for the purpose of food storage, respiration, support, etc. Roots in some plants change their shape and structure and become modified to perform functions other than absorption and conduction of water and minerals. […]