Aquatic Ecosystems * Aquatic ecosystems refers to plant and animal communities occurring in water bodies * On the basis of salinity ,Aquatic ecosystems are classified as follows- a- Fresh water ecosystems -Water on land which is continuously cycling and has low salt content (always less than 5 ppt) is known as fresh water b-Marine ecosystems … Read more
Plants -Parts and Structural Organization The Root The main functions of the root system are- A- absorption of water and minerals from the soil B- providing a proper anchorage to the plant parts C- storing reserve food material and synthesis of plant growth regulators. * The primary roots and its branches constitute the tap root … Read more
Biomass 1-Biomass is a renewable energy resource derived from plant and animal waste. 2-Biomass fuels can be used directly or they can be transformed into more convenient form and then used 3-Biomass can be converted into alcohol (liquid biofuels) by distillation 4-Ethanol, Methanol, Gasoho, Biodiesel are Liquid Biofuels … Read more
Biology Cell 1- Robert Brown -Discovered Cell Nucleus in 1831 2-Schleiden and Schwann presented the cell theory, that all the plants and animals are composed of cells and that the cell is the basic unit of life. 3-Robert Hooke – Discovered and coined the term cell in 1665 4- It was possible to observe … Read more
Biology Diseases – Fungal Diseases in Humans 1- Moniliasis is one of the most common opportunistic diseases in AIDS patients 2-Candida albicans, a fungus is the etiological agent of moniliasis. Moniliasis is also known as mucocutaneous candidiasis. 3-Pigeon and Bat feces can carry Histoplasma capsulatum, the fungal agent of histoplasmosis. The infection is transmitted through … Read more
Biology Botany 1-Gas exchange in plants is carried out via simple diffusion. 2-Transpiration is the loss of water from the plant to the atmosphere into the form of vapor. 3-Transpiration occurs through the cuticle of the epidermis (cuticular transpiration) or through the ostioles of the stomata (stomatal transpiration). 4-Stomata (singular, stoma) are small specialized passageways … Read more
Biology 1-The vitamin required for coagulation of blood is Vitamin K 2-Method of respiration in Amoeba is diffusion. 3-The most poisonous of all waste products of metabolism is ammonia. 4-The finger like projections which increases the surface area in small intestine is called Villi. 5-A point of contact between two neurons is Synapse. 6-The food … Read more