Kabir AKMN 
The Gray-headed parakeet (Psittacula finschii) is a colorful species of parrot endemic to the Indian subcontinent. It is also called Finsch’s or Finsch’s Parrot. It is popular in aviculture as a pet, and has been introduced to many other parts of the world since the 1960s. Systematic Position Phylum: ChordataSubphylum: VertebrataClass: AvesOrder: PsittaciformesFamily: PsittaculidaeGenus: PsittaculaSpecies: … Read more
Both meningitis and encephalitis are life-threatening brain disorders. Mening tissue that forms around the brain and spinal cord is called meninges. The terms encephalitis and meningitis are often used interchangeably by people without a medical background. However, there is a key difference between the two health conditions. The distinction is important and can have major … Read more
Malaria is a very serious disease that has caused death of millions of human lives. The causative organism is a protozoan belonging to the genus Plasmodium. The members of the genus is characterized by having a life-cycle in which alteration of an asexual cycle with a sexual cycle accompanied with an alteration of host occurs. … Read more
Fish is a cold-blooded aquatic vertebrate organism which makes the most diverse and largest taxonomic group. It contains the following four taxonomic classes: Myxini Cephalaspidomorphi Elasmobranchiomorphi, and Osteichthyes. Cephalaspidomorphi (Hagfishes and Lampreys) The class Cephalaspidomorphi is named after the Greek word kephale = head + aspidos = blade or shield + morphe = form. This … Read more
The number of living fish species is over 26,400 which is 51.9% of almost all vertebrates. Like other vertebrates, fish have an unequal abundance and diversity. Their ancestors were widespread 500 million years ago. They spread through a massive time-wide evolution and had the opportunity to originate and become extinct in major phyletic streams, even … Read more
A stethoscope is a medical device used to listen to the heartbeat or other internal sounds of the human or other animal body. It is mainly used to hear the sound of heartbeat and breathing. However, it is also operated to hear the sound of blood flowing in the intestines, veins, and arteries. Stethoscopes can … Read more