Mechanism of Excretion in Earthworm   In earthworm, water, urea and Co2 are major waste products. In earthworm nephridia is excretory organ. Body fluid enters into nephridia through nephrostome. Nephridium continues into a coiled tubule which allows selective re-absorption of materials. At last waste products are excreted out through nephridiopore   Then you can tackle…

Excretion in Planaria   In planaria, Co2, and water are major waste products. In planaria long tube like structures are excretory organs. These tubes have bulb like structures and have long cilia project in them and they form flame cell system. The cilia create continuous currents within the flame cell system and current carry fluid…

Excretion in Amoeba   In amoeba Co2, water and ammonia are major waste products. In amoeba contractile vacuoles are excretory organs. Contractile vacuoles are osmo-regulatory in function. They continuously remove excess water from body, which also carries some ammonia and carbon dioxide. These wastes also excreted through simple diffusion.   Preparation groups are the ideal…

Nitrogenous Waste Removed from Body   Simple aquatic animals excrete ammonia in surrounding water by diffusion. In higher animals ammonia is converted into less toxic compounds such as urea, and uric acid.   Urea is excreted out in the form of urine. Uric Acid is produced in insects, reptiles and birds. It is excreted out…

Roles of Kidney in the Human Body   The main function of kidney is urine formation, which completes in three steps:   Ultra Filtration:   i) This process takes place in renal corpuscle.   ii) Due to blood pressure in glomerulus blood is filtered in Bowman’s capsule. Here Bowman’s filtrate is obtained which consists of…

Major Metabolic Waste in Animals   The main metabolic wastes in animals are:   i) Carbon dioxide.   ii) Water.   iii) Nitrogenous wastes (includes Ammonia, Uric Acid & Urea)   There is a lot of material in social science, and therefore you can study the subject from any topic and from different sides. As…

Difference Between Transpiration and Guttation   During transpiration water is removed in the form of water vapours and during guttation water is removed in the form of water droplets.   Types of programming – explanations from a computer hardware store The answer to the question of what programming languages ​​are there will be very lengthy,…

Structure of Nephron   Nephron is structural and functional unit of kidney and excretory system. Each nephron consists of two parts:   Renal Corguscle:   Renal corpuscle is further divided into two parts:   i) Glomerulus is a group of capillaries. Blood enter in them through renal artery.   ii) Bowman’s capsule is a cup…

How Excretion Takes Place in Plants   Removal of Gases:   Green plants give off oxygen as waste in the daytime and carbon dioxide at night.   Removal of Water:   Excess water is removed as water vapour by the process of transpiration. Excess water is removed as water droplets by the process of guttation.…

Structure of Human Kidney   External Structure of Kidney:   i) Kidneys are found attached to dorsal body wall in abdominal cavity.   ii) Kidney is bean shaped and enclosed in fatty membrane called capsule.   iii) The depression in the center is called hilus. It provide a space to renal artery, renal veins and…