Tag: the world of microbes
Questions Related to the world of microbes
Which protistian structure is not correctly matched with its function?
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Pseudopodia- movement and feeding
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Cyst- reproductive structure
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Eyespot- light detection
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Trichocyst- defense and capture of prey
An organism in it's dormant stage is called a cyst. In these conditions, an organism is inactive and does not perform any daily activities. Thus, they help the organisms survive in unfavourable conditions.
Which of the following kingdoms is intermediate between kingdom monera and muiticellular organisms?
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Fungi
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Animalia
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Plantae
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Protista
Which of the following are the characteristics of kingdom Protista?
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Multicellular organisms whose chromosomes are not enclosed in a nuclear membrane.
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Unicellular organisms whose chromosomes are not enclosed in a nuclear membrane.
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Unicellular organisms whose chromosomes are enclosed in a nuclear membrane.
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Multicellular organisms whose chromosomes are enclosed in a nuclear membrane.
A symbiotic protist is
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Plasmodium
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Lophomonas
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Fuligo
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Trypanosoma
Lophomonas are the protists that can live in a symbiotic relationship or as a parasite in the body of their host. The hosts are arthropods, which could be termites, cockroaches in which lophomonas lives in their digestive system or intestinal tracts.
The correct answer is B.
The first eukaryotes to evolve were
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Bryophytes
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Green algae
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Blue-green algae
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Protistans
- The simple protists were similar to bacteria but they gradually evolved as eukaryotes wherein each cell is having a nucleus.
- They are not an animal, plant or fungus but they may be closely related to plants.
- They may survive alone or may group as per the convenience.
- The correct answer is D.
Which of the following is a symbiont?
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Vorticella
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Paramecium
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Colpidium
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Trichonympha
- Zootermopsis, the pine woods termite, contains vast numbers of the wood engulfing symbiont Trichonympha, along with a number of other species, such as the primitive flagellate, Streblomastix and Trichomonas, a genus commonly found in warm, moist interiors of virtual all species of animals.
- Trichonympha along with these huge cells are bacteria residing in the termite gut assist in breaking down the cellulose. Hence the correct option is D.
Entamoeba histolytica is
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Monogenetic
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Digenetic
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Free-living
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None of the above
Water collecting canals around the contractile vacuole are called _________.
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Incurrent canals
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Excurrent canals
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Radiating canals
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None of the above
Water collecting canals around the contractile vacuole are called Radiating canals The contractile vacuole is the part that contracts and forces extra water out of the cell. The radiating canals are the paths to the contractile vacuole. In Paramecium, these are two contractile vacuoles while one in Amoeba.
Macronucleus of Paramecium takes part in
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Transmission of hereditary characters
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Controlling normal cellular metabolism
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Production of variations and adaptability
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All the above
Entamoeba histolytica secretes proteolytic enzyme called _________.
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Polypeptidase
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Histolysin
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Pepsin
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Trypsin
Entamoeba histolytica secretes proteolytic enzyme called Histolysin.