Tag: uses of microorganisms

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Questions Related to uses of microorganisms

Multiple choice biology micro organisms food production and microorganisms microbial products - food, medicines and industrial products uses of microorganisms

Which of the following grows in the form of multicellular filaments? 

  1. Bacteria

  2. Mould

  3. Amoeba

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

(A)Bacteria grows in the form of colonies.

(B)Mould grows in the form of filaments.
(C)Amoeba has a definite irregular shape growth.
So, the correct answer is 'Mould'

Multiple choice biology food production food production and microorganisms microbial products - food, medicines and industrial products uses of microorganisms

Which among the following is the real product of the honey bee?

  1. Pollen

  2. Bee wax

  3. Honey

  4. Propolis
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Beewax is the natural secretion of the worker bees and is poured out in thin delicate flakes. It is made of:(i) even numbered alcohols. (ii) even numbered fatty acids and (iii)  odd numbered normal paraffins.

Multiple choice biology food production food production and microorganisms microbial products - food, medicines and industrial products uses of microorganisms

Out of the total amount of sunlight falling on the earth only about ____________ $\%$ is utilized for production of food.

  1. $5$
  2. $3$
  3. $0.02$
  4. $2$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

About $34\%$ of sunlight is reflected back out of the total amount of sunlight falling on earth. $10\%$ is absorbed by ozone and out of remaining $56\%$ only $0.02\%$ is used for photosynthesis.

Multiple choice biology food production food production and microorganisms microbial products - food, medicines and industrial products uses of microorganisms

Curing of Tea leaves is accomplished by

  1. Viruses

  2. Fungi

  3. Mycorrhiza

  4. Bacteria
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Curing of tea leaves is accomplished by bacteria. Leaves of tea and tobacco are cured off their bitterness with the help of certain bacteria, e.g., Bacillus megatherium. Beans of coffee and cocoa are similarly cured.

Multiple choice biology food production food production and microorganisms microbial products - food, medicines and industrial products uses of microorganisms

A number of organic compounds can be decomposed by

  1. Pseudomonas

  2. Mycoplasma

  3. Chemolithotrophs

  4. Azotobacter
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Organic compounds like plant and animal residues are present in the soil. These organic compounds are broken down by a large number of bacteria, fungi, larger organisms. Bacteria like Pseudomonas lives in the soil and decomposes organic compounds and releases carbon dioxide, energy, water and other plant nutrients.

Thus, the correct answer is 'Pseudomonas.'

Multiple choice biology food production food production and microorganisms microbial products - food, medicines and industrial products uses of microorganisms

Which of the following have been more often used than any other group of plant substance n chemotaxonomic studies $2$?

  1. Falconoid

  2. Trapezoids

  3. Alkaloids

  4. Iridoids
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Flavonoids (misspelled as Falconoid) are secondary metabolites widely used in chemotaxonomy due to their diversity, stability, and distribution patterns across plant taxa. They serve as excellent chemical markers for classification and evolutionary studies.

Multiple choice biology food production food production and microorganisms microbial products - food, medicines and industrial products uses of microorganisms

Caffeine, a constituent of tea and coffee is actually.

  1. A polyamine

  2. An oligosaccharide

  3. An alkaloid

  4. A lipoprotein
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Caffeine is a naturally occurring nitrogenous plant compound classified chemically as an alkaloid, known for its stimulant effects on the central nervous system.

Multiple choice biology food production food production and microorganisms microbial products - food, medicines and industrial products uses of microorganisms

The most thoroughly studied of the known bacteria-plant interactions is the :-

  1. Gall formation on certain angiosperms by Agrobacterium

  2. Nodulation of Sesbania stems by nitrogen fixing bacteria

  3. Plant growth stimulation by phosphate solubilising bacteria

  4. Cyanobacterial symbiosis with some aquatic ferns
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Agrobacterium tumefaciens is called a natural plant genetic engineer. Using Agrobacterium vector, nematode specific genes were introduced into the host plant. The introduction was as such that it produced both sense and anti-sense RNA in the host cells. These two RNA's being complementary to each other formed a double-stranded (ds-RNA) that initiated RNAi and thus, silenced the specific mRNA of the nematode. The Agrobacterium is most widely studied of the known bacteria-plant interactions.
So the correct answer is 'Option A'.
Multiple choice biology food production food production and microorganisms microbial products - food, medicines and industrial products uses of microorganisms

Commercial source of manufacture of cheese especially for giving flavour to it, its from _____________.

  1. Citrus fruit

  2. Aspergillus

  3. Penicillium

  4. Bacteria
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Various bacteria, such as Propionibacterium and others, are used in the cheese-making industry to develop specific flavors and textures during the ripening process.

Multiple choice biology food production food production and microorganisms microbial products - food, medicines and industrial products uses of microorganisms

Which one of the following is a viral disease of chickens ?

  1. pullorum disease

  2. Ranikhet

  3. mycotic disease

  4. fowl spirochaetosis.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ranikhet disease, also known as new castle disease, is found in young birds. Its symptoms include sneezing, gasping and often  droopiness. The affected birds are depressed with ruffled feathers. Control of Ranikhet disease can be done by sanitary and vaccination measures.