#sleeping sickness

General Biology

T. brucei complex transmitted to man by byte of several species of tsetse fly can cause

In ecology and evolution, evolutionary adaptation dictates that selection and population dynamics shape traits. Therefore Sleeping sickness is correct as it explains adaptive diversity, supported by mechanistic studies and conserved across related systems.

Ref: Begon, Townsend and Harper, Ecology: From Individuals to Ecosystems, 4th Edition, Chapter 5, Population Ecology, discusses population dynamics, competition, predation and community interactions explaining ecological stability, ecosystem processes and biodiversity conservation relevant to environment

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Protista - Euglenoids Slime Moulds Protozoans

A parasitic protozoan possesses flagella and causes sleeping sickness. Which organism and protozoan group are correctly

Trypanosoma is a parasitic flagellated protozoan that causes sleeping sickness. Plasmodium belongs to the sporozoans, while Paramoecium is a ciliated protozoan.

Ref: NCERT Class 11 Biology Chapter 2: Biological Classification Protista - Euglenoids Slime Moulds Protozoans

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Protista Classification

Trypanosoma causes

Trypanosoma brucei subspecies cause African sleeping sickness, transmitted by tsetse fly Glossina. Parasites live extracellularly in blood, lymph and cerebrospinal fluid, evading immunity through antigenic variation of variant surface glycoprotein coat continuously switching. Disease progression includes hemolymphatic stage with fever and lymphadenopathy, followed by meningoencephalitic stage disrupting sleep-wake cycle due to neuroinvasion. Plasmodium causes malaria, Vibrio cholera causes cholera, Mycobacterium causes tuberculosis. Distinct vector-borne life cycle and pathogenesis identifies

Ref: NCBI Bookshelf, Medical Microbiology: Trypanosoma Sleeping Sickness; Campbell Biology 12th ed., Chapter 28 Kinetoplastid Parasites

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Biological Classification

The notorious disease 'sleeping sickness' is caused by Trypanosoma, which belongs to which major group of protozoans?

According to , the members of flagellated protozoans are either free-living or parasitic in nature, and they notably possess flagella for locomotion. The parasitic forms within this specific group are known to cause severe diseases in humans. A primary example provided in the text is Trypanosoma, which is the causative agent of the deadly disease known as sleeping sickness.

Ref: NCERT Class 11 Biology > Chapter 2: Biological Classification > 2.2 Kingdom Protista

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