The Arterial system in human beings
The blood vessels which carry oxygenated blood away from the heart and supply blood to various body parts collectively constitute the arterial system. The major […]
Nitrogen fixation, its types and mechanism
What is nitrogen fixation? The phenomenon of conversion of free nitrogen into nitrogenous salts to make it available for absorption by plants is called nitrogen […]
Muscular tissue, its types and functions in human body
A tissue, consisting of sheets or bundle of cells (muscle fibers) which is capable of contracting and producing movement or tension in the body is […]
Coal (Formation, Types and Importance)
What is coal? Coal is a solid, black, readily combustible fossil fuel found as thick layers in deep mines under the surface of the earth. […]
Fossils (Formation, Types and Importance)
What are fossils? The term fossil comes from the Latin word fossilis, which literally means ‘dug up’. Fossils are the remnants, impressions, or traces of […]
Structure and Life cycle of a Mushroom
Mushrooms are multicellular fungi which generally grow in moist, humid and dark places, on rotten logs of wood, tree trunks, soil rich in organic matter, […]
How to identify poisonous mushrooms?
A variety of mushrooms are found naturally growing on rotten logs of wood, dead barks of trees, fallow lands, forest beds, animal excreta etc. They […]
Food Adulteration, its types and hazards on human life
Food adulteration is the intentional addition of non-permitted foreign matter in food which increases the volume and weight of food. This helps increase volume of […]
Structure of Taste receptors and Mechanism of Gustation
The sensation of taste is called gustation or gustatory response. Various chemoreceptors present in the tongue help in getting the sense of taste. The sense […]
Structure of Olfactory receptors and Mechanism of Olfaction
Olfaction is the sense of smell. It is how we perceive odors. Nose is the organ with millions of olfactory receptors that help us perceive […]