Physics – Important Points * Colour Blindness was first discovered by Horner (1976) * 3D image is known as Hologram * Human eyes have convex lens * Raman effect is related to Scattering * Heat energy are transmitted as Infra Red Rays * Speed of Light is maximum in Vaccum * Focal Distance of lens … Read more
Geography 1- How many types of rocks are there – 3 (Igneous, Sedimentary, Metamorphic) 2-The point of origin of earthquake is called Seismic focus 3-The earth is divided into 24 longitudinal zones, each being 15° or 1 hour apart in time (4 minutes/degree). 4-Lunar Eclipse occurs – When earth comes between sun and moon 5-The … Read more
Biology Antibiotics * The medicines that kill or stop the growth of the disease-causing microorganisms. Such medicines are called ANTIBIOTICS. * A number of antibiotics are being produced from bacteria and fungi. Streptomycin, tetracycline and erythromycin are some of the commonly known antibiotics which are made from fungi and bacteria. * In 1929, Alexander Fleming … Read more
Insectivorous Plants 1- These plants are specialized in trapping insects and are popularly known as insectivorous plants 2-The insectivorous plants often have several attractions such as brilliant colors, sweet secretions and other curios to lure their innocent victims. 3-Insectivorous plants can broadly be divided into active and passive types based on their method of trapping … Read more
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
Geography Soil 1-Soil is the thin top layer on the earth’s crust comprising rock particles mixed with organic matter. 2-Pedology is the study of soils in their natural environment. 3-The soil is formed by the breaking down of rocks by the action of wind, water and climate. 4-If soil contains greater proportion of big particles … 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
Amino Acids – Proteins 1-Amino acids are organic compounds containing an amino group [NH2] and an acidic group [COOH] as substituents on the same carbon i.e., the a-carbon. Hence, they are called a-amino acids. 2-Amino acids contain amino (–NH2) and carboxyl (–COOH) functional groups. 3-Amino acids are classified as acidic, basic or … Read more
Geography SOLAR SYSTEM 1-Our solar system consists of the sun (the star), planets, satellites, millions of smaller bodies like asteroids, meteorites and comets and huge quantity of dust-grains and gases. 2-Out of the nine planets, Mercury, Venus, Earth and Mars are called as the inner planets as they lie between … Read more