Farming organisms such as fish receive nutrients other than minerals through taking food. In nature, most organisms survive by consuming live food such as plankton from the environment. However, some living organism takes dead organic particles as food. Phytoplankton is the primary food of many aquatic larvae. The larvae of most species eat completely zooplankton … Read more
Echinococcus granulosus is a parasitic worm which belongs to the family Taeniidae under order Cyclophyllidea of class Cestoda. It is also known as Dog tapeworm, Hydatid worm or Hyper-tape worm. It is found all over the world. The larval form causes hydatid disease in man. This disease is also known as human echinococcosis or hydatidosis. … Read more
Taenia solium is also called the pork tapeworm. It is the parasitic organism under phylum Platyhelminthes. It is found all over the world. It is the endoparasite and adult worm lives in small intestate of man who eat pork. Systematic Position Phylum:Platyhelminthes Class: Cestoda Order: Cyclophyllidea Family: Taeniidae Genus: Taenia Species:Taenia solium Definitive Host: … Read more
Acquired immunodeficiency syndrome is also known as AIDS which is a chronic life-threatening disease. Actually, it is a special type of serious infectious disease of the human immune system. It is defined as the HIV post infection condition. Total immunity of the body is damaged by the infection of the HIV. So a patient died … Read more
Secchi disc is a simple type of round plate painted with successive black and white colors. Angelo Secchi created the Secchi disc in 1985. A thread is hung in the center of the plate or disc. The diameter of the plate is around 30 cm or 12 inches which is white-black in color. The disc … Read more
The word ‘benthos’ comes from the Greek word ‘bathys’ which means depth. Benthos refers to some aquatic organisms that live above, inside, or near the bottom of a body of water. Such organisms live in flowing or stagnant water bodies and are also found in salt or freshwater habitats. The sedimental organisms at the bottom … Read more