R4RIN – MCQs, Mock Tests | Botany Botany MCQS[NEET-2021 to 2022]-Kingdom Monera

How many of the following species of bacteria cause diseases in humans?

1. 50
2. 100
3. 150
4. 200

✅ Correct Answer: 4

Cyanobacteria reproduce by which of the following?

1. Binary fission
2. Multiple fission
3. Mitosis
4. meosis

✅ Correct Answer: 1

Locomotion of cyanobacteria is possible because of

1. Gas vesicles
2. Flagella
3. Cell Membrane
4. More than one option is correct

✅ Correct Answer: 1

Cyanobacteria have

1. Gram +ve cell wall
2. Gram -ve cell wall
3. Both
4. None

✅ Correct Answer: 2

Who among the following Scientist developed the vaccine against anthrax?

1. Edward Jennar
2. Robert Brown
3. Louis Pasteur
4. A and B

✅ Correct Answer: 3

Which of the following Chemical substances inhibit the growth of micro organism?

1. Antiseptic
2. Antibiotic
3. Anti Aging serum
4. A and B

✅ Correct Answer: 1

Rapid growth at exponential ration occurs in which of the following phase of bacterial growth?

1. Log phase
2. Lag phase
3. Death phase
4. stationary phase

✅ Correct Answer: 1

Sex pili is formed in

1. Binary fission
2. multiple fission
3. Mitosis
4. None

✅ Correct Answer: 4

E. coli and example of

1. Aerobic Bacteria
2. Anaerobic Bacteria
3. Facultative Bacteria
4. None

✅ Correct Answer: 3

Cell wall is absent in

1. Mycoplasma
2. Plant cell
3. Bacilli
4. mycobacterium

✅ Correct Answer: 1

Cell wass of Archaeobacteria does not contain

1. Proteins
2. Peptidoglycan
3. Glycoproteins
4. None

✅ Correct Answer: 2

Appearance of gram positive bacteria?

1. Red
2. Green
3. Purple
4. Whitish yellow

✅ Correct Answer: 3

Extremely long molecule of DNA that is tightly folded to fit inside the cell component is called

1. Chromosomes
2. Nucleus
3. Chromatin body
4. A and C

✅ Correct Answer: 3

Which of the following contains genes for drug and disease resistance in bacteria?

1. Plasmid
2. Necleotide
3. Mesosome
4. None

✅ Correct Answer: 1

Which of the following is the waste material in bacteria ?

1. Lactic acid
2. Glycogen
3. Urea
4. Ammonia

✅ Correct Answer: 1

Example of bacteria requiring low concentration of oxygen is

1. Campylobactor
2. spirocheta
3. E-coli
4. Pseudomonas

✅ Correct Answer: 1

Purple non-sulphur bacteria is an example of

1. Heterotrophic bacteria
2. Chemosynthetic bacteria
3. Saprotrophic bacteria
4. Photosynthetic bacteria

✅ Correct Answer: 3

Those bacteria which are fully dependent upon their host for nutrition are called

1. Heterotrophic bacteria
2. Chemosynthetic bacteria
3. Saprophytic bacteria
4. Parasitic bacteria

✅ Correct Answer: 4

Nitrifying bacteria are the examples of

1. Hetrotrophic bacteria
2. Chemosynthetic bacteria
3. Parasitic bacteria
4. Saprophytic bacteria

✅ Correct Answer: 2

Coccobacillus has a shape similar to

1. Diplobacillus
2. Sarcina
3. Egg
4. None of these

✅ Correct Answer: 3

The first bacterium isolated was

1. Coccus
2. Bacillus
3. Vibrio
4. Spirochete

✅ Correct Answer: 2

Which of the following bacteria are thick rigid and spiral

1. Vibrio
2. Spirillum
3. Spirochete
4. Coccus

✅ Correct Answer: 2

A group of 8 cocci is called

1. Diplococci
2. Octococci
3. Tetrad
4. Sarcina

✅ Correct Answer: 4

Which of the following has a chain arrangement?

1. Streptobacillus
2. Streptococci
3. Staphylococci
4. A and B

✅ Correct Answer: 4

Which of the following bacteria do not have flagella commonly?

1. Cocci
2. Bacilli
3. Streptobacilli
4. Vibrio

✅ Correct Answer: 1

Flagella originate from

1. Cell membrane
2. Cell wall
3. Capsule
4. Basal body

✅ Correct Answer: 4

A bacterium with tuft of flagella at both poles is called

1. Lophotrichus
2. Monotrichous
3. Peritrichous
4. Amphitrichous

✅ Correct Answer: 4

Which of the following structure primarily helps in attachment of bacteria on various surfaces?

1. Flagella
2. Pili
3. Both of these
4. None of these

✅ Correct Answer: 2

Which of the following structure provides greater pathogenicity to the bacteria?

1. Capsule
2. Slime
3. Cell Wall
4. Cell membrane

✅ Correct Answer: 2

The word Archaeobacteria (a division of bacteria) derived from Greek mean

1. True bacteria
2. False bacteria
3. Recent bacteria
4. Ancient bacteria

✅ Correct Answer: 4

Who coined the term Animalcules for microorganisms like Bacteria and protozoa?

1. Robert Koch
2. Louis Pasteur
3. Leeuwenhoek
4. Alexander Fleming

✅ Correct Answer: 4

Who discovered the bacteria causing tuberculosis and also developed various techniques of media preparation and maintenance of pure culture?

1. Robert Koch
2. Louis Pasteur
3. Alexander Fleming
4. Leeuwenhoek

✅ Correct Answer: 1

Which of the following statement is incorrect regarding germ theory of diseases postulated by Robert Koch?

1. A specific organism can always be found in association with a given
2. The organism can be isolated and grown in pure culture in the laboratories
3. It is possible to recover the organism in pure culture from the experimentally infected animals.
4. The pure culture cannot produce the disease when inoculated into susceptible animal however the causative organism isolated from pure culture can do so.

✅ Correct Answer: 3

Which of the following structure is not present in all the bacteria?

1. Cell membrane
2. Chromatin bodies
3. Capsule
4. Ribosomes

✅ Correct Answer: 4

The size of Spirochete is

1. 0.1 -600 um
2. 100-200 nm
3. 0.75-1.25 um
4. 500 um

✅ Correct Answer: 3

E. coli and example of entrobacteriace is important for causing diarrheal diseases its size is

1. 0.1-600 um
2. 100-200 nm
3. 1.1-1.5 um (width) 2.0-6.0 um (length)
4. 0.75-1.25 um

✅ Correct Answer: 3

In bacterial categories the bacteria smaller in number are

1. Gram-ive bacteria
2. Ancient bacteria
3. Eubacteria
4. Gram +ive bacteria

✅ Correct Answer: 3

Germ theory of disease has postulates

1. 3
2. 5
3. 4
4. 6

✅ Correct Answer: 3

Some bacteria ranging occasionally a size of 500 ?m in length are

1. Escherichia coli
2. Spirochetes
3. Epulopiscuim
4. Mycoplasma

✅ Correct Answer: 2