What is Amoeba? Structure & Life Processes | Class 9 Biology скачать в хорошем качестве

What is Amoeba? Structure & Life Processes | Class 9 Biology

What is Amoeba? Structure & Life Processes | Class 9 Biology This video will help you to learn What is an Amoeba? with Example. ‎ ‎What is an Amoeba? ‎ ‎Have you ever observed microscopic Amobea in your biology lab? ‎If not   “don't worry”. ‎ ‎In this video, we will learn about Amoeba ‎ ‎Amoeba is a genus that belongs to protozoa, which are unicellular eukaryote with membrane-bound cell organelles. ‎ ‎August Johann Rosel von Rosenhof was the first to discover Amoeba in 1757. ‎ ‎The name Amoeba is derived from the Greek word amoibe, which means change. ‎ ‎ ‎There are many species, of which the most extensively studied is Amoeba proteus. ‎ ‎Amoeba is found in terrestrial as well as aquatic habitats. ‎ ‎However, some are parasitic in nature, thereby causing harm to humans and animals. ‎ ‎ ‎For Example - Entamoeba histolytica that causes amoebiasis. ‎ ‎Lets learn about the structure of amoeba. ‎The cell of an amoeba consists of a cell membrane, a nucleus with genetic material, food vacuole for digestion of food, and a contractile vacuole for osmoregulation. ‎ ‎An Amoeba can have more than two nuclei in a cell. Similar to other protozoans, it reproduces asexually either by mitosis or cytokinesis. ‎ ‎During the forceful division of Amoeba, the portion that contains the nucleus survives, While the portions without nucleus die. ‎ ‎On the other hand, when Amoeba is exposed to the lethal environment, it turns into a dormant form, known as the Amoebic cyst. ‎ ‎It continues to remain in the cyst form until it encounters favorable environmental conditions. ‎ ‎Besides this Amoeba possesses pseudopodia for locomotion and feeding purposes. ‎ ‎The pseudopods are extensions of the cytoplasm. ‎ ‎Let’s move on to the nutrition in Amoeba. ‎ ‎Amoeba has a holozoic mode of nutrition. ‎ ‎The food sources of Amoeba are usually bacteria and other protists. While some are detritivores and eat dead organic material. ‎ ‎They ingest their food by phagocytosis, in which they spread their pseudopods around food particles and engulf it. ‎ ‎After ingestion, food is transferred to the food vacuole where it is digested by enzymes. ‎ ‎Digestion in amoeba is intracellular that is taking place within the cell. ‎ ‎After digestion food vacuoles are transported deeper into the cells by cytoplasmic movements and undigested waste is expelled out through the cell membrane. ‎ ‎This concludes our video on “Amoeba" ‎Follow us on our social media handles to stay updated. what is amoeba amoeba kya hota hai amoeba class 9 unicellular organisms class 9 amoeba structure and function ‎ ‎Happy Learning!! ‎“Thanks for watching”. ‎#Learnwithhayati ‎#Amoeba ‎#Biology ‎#cbse ‎#icse ‎#mdcat ‎#class11 ‎#class9 ‎#class12 ‎#class10 ‎