Question

Which of the following is a mismatched pair of protozoan groups and its example?
(a) Amoeboid protozoan - Entamoeba histolytica
(b) Flagellated protozoan - Giardia intestinalis
(c) Ciliated protozoan - Paramecium caudatum
(d) Sporozoan - Leishmania donovani

Answer 1

Hint: Numerous parasitic protozoans that develop infectious spores also have complicated life cycles that include both sexual and asexual reproduction. Diseases like malaria and cryptosporidiosis are caused by sporozoans. The majority of sporozoans formerly placed in the Sporozoa class are now known as apicomplexans.

Complete answer:
Entamoeba histolytica is an anaerobic parasitic ameboid protozoan that causes amebiasis to infect humans and other primates. Giardia intestinalis, also referred to as Giardia lamblia, is a flagellated parasitic protozoan that causes Giardiasis to colonise and replicate in the small intestine. Paramecium caudatum is a protozoan which is unicellular, eukaryotic and ciliated. Leishmania donovani is an intracellular parasite species belonging to the genus Leishmania, a group of kinetoplastid hemoflagellates that cause Leishmaniasis.

Additional information:
Entamoeba histolytica is an intestinal parasite, with the cysts of the parasite found in infected individuals' feces. It is primarily transmitted through fecal-oral contact by ingestion of the cysts, usually through food or drink contaminated with an infected person's faeces, and is more common in developing countries.
The parasite infection that spreads through infected water and food triggers giardiasis. Diarrhoea, vomiting, lack of appetite, pain and exhaustion are caused by it. It can be healed in a few weeks using medicine. In some cases, without any medical treatment , the patient gets better.
In the phylum Ciliophora, Paramecium caudatum is a genus of unicellular protist. They which exceed 0.33 mm in length and are covered with cilia called minute hair-like organelles. In locomotion and feeding, the cilia are used. The species is very common in marine, brackish and freshwater habitats, and is widespread.
So, the correct answer is ‘(d) Sporozoan - Leishmania donovani’.

Note: Leishmaniasis is a disease that is caused by Leishmania type parasites. It is transmitted by the bite of sandflies of some kinds. There are three primary ways of contracting the disease: cutaneous, mucocutaneous, or visceral. The cutaneous form is associated with ulcers of the skin, while the mucocutaneous form is associated with ulcers of the skin , mouth, and nose, and the visceral form begins with ulcers of the skin, accompanied by fever, low red blood cells, and swollen spleen and liver.