#Examples of binary fission free

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Principles of Inheritance and Variation.

New Questions and Answers and Forum Categories Radiolarian ooze is the deposit of radiolarian skeleton which is put to commercial use like diatomaceous earth as filtering agent and abrasive (rubbing). Reproduction occurs through binary fission and swarm spores. The intra-capsular part contains nuclei, small vacuoles and reserve food that represents the reproductive part. Pseudopodia are fine thread like radiating strands which may be axopodia or filopodia. The extra capsular part develops pseudopodia for locomotion and ingestion. The protoplasm is differentiated into intra-capsular and extra capsular parts.

#Examples of binary fission free

They are exclusively marine, free floating sarcodines having a central perforated capsule and a fine framework or skeleton of silica. Most effective medicine for amoebiasis is Metrogyl or Flagyl. It is important to note that only one young amoeba with four nuclei hatches out from a cyst of E. Tetra nucleate cyst is the infective stage. It has four nuclei and two chromatoid bodies. A mature cyst is called tetra-nucleate cyst. Entamoeba histolytica has two forms, magna (trophozoite) - pathogenic form found in the mucosa and sub mucosa of intestine forming ulcers and minuta- non-pathogenic form found in the lumen of the intestine. The parasite can also reach other body organs.

It feeds on red blood corpuscles by damaging the wall of large intestine and reaching the blood capillaries. Contractile vacuole is absent as there is no need of osmoregulation. The parasite is with generally one pseudopodium. The symptoms of the disease are abdominal pain, repeated motions with blood and mucus. It resides in the upper part of the human large intestine and causes the disease known as amoebic dysentery or amoebiasis. The life cycle of Entamoeba histolytica is mono-genetic (single host life cycle). Losch (1875) discovered its pathogenic nature. Lamble (1859) discovered Entamoeba histolytica. Sexual reproduction takes place by the formation of uninucleate internal gametes. Both non-contractile and contractile vacuoles occur. Sol-gel theory of amoeboid movement was given by Hyman, and supported by Pantin and Mast. If a fresh water Amoeba is placed in salt water, its contractile vacuole will disappear. If an Amoeba is placed in distilled water, its contractile vacuole works faster. The contents of food vacuole in Amoeba first become acidic then alkaline. Invagination tube is formed to take food particles.