Meiotic cell division (Meiosis), its stages and significance
What is meiosis? The term meiosis is derived from the Greek word ‘meioum’ which means to reduce. It is a special kind of cell division, […]
What is meiosis? The term meiosis is derived from the Greek word ‘meioum’ which means to reduce. It is a special kind of cell division, […]
What is cell division? Life of multicellular organisms starts from a single cell known as a zygote. An adult plant or animal contains millions of […]
If the kidneys fail, toxic substances build up in the body until cells and organs begin to deteriorate and eventually die. Many tens of thousands […]
Grafting a kidney from a compatible donor to restore kidney functions in a recipient suffering from kidney failure is called kidney transplantation. It is also […]
S.N. Agnatha Gnathostomata 1. Mouth is circular without jaws. Mouth is provided with jaws. 2. Paired appendages are lacking. Paired appendages are present, may be […]
Kidney is the most important excretory organ of frog. Frog mainly excretes urea, ammonia and water. In tadpole, kidney is pronephric but in adult kidney […]
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 […]
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 […]
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 […]
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. […]
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