Explore topic-wise MCQs in Biotechnology.

This section includes 18 Mcqs, each offering curated multiple-choice questions to sharpen your Biotechnology knowledge and support exam preparation. Choose a topic below to get started.

1.

Which of the following is the most effective for the rice sheath blight pathogen, ?

A. Polyoxin D
B. Polyoxin B
C. Polyoxin L
D. Polyoxin C
Answer» B. Polyoxin B
Discussion
2.

is reported to show a potent curative effect against

A. rice blast disease
B. yellow blight of maize
C. milo of soybean
D. eye spot of sugarcane
Answer» B. yellow blight of maize
Discussion
3.

Which of the following is known to control Colorado potato beetle?
A. <i>Beaveria bassiana</i>
B. <i>Metarhizium anisopliae</i>
C. <i>Verticillium lecauii</i>
D. <i>Nomuraea rileyi</i>
Answer» B. <i>Metarhizium anisopliae</i>
Discussion
4.

Which of the following microorganisms leach metals out of rock ores and can accumulate silver?
A. <i>Pseudomonas aeruginosa</i>
B. <i>Thiobacillus</i>
C. <i>Pseudomonas putida</i>
D. <i>Zoogloea ramigera</i>
Answer» C. <i>Pseudomonas putida</i>
Discussion
5.

Which of the following have been used to oxidize ammonia and to prevent algal growth?
A. growth of hypomicrobium in presence of added methanol
B. <i> Micrococcus denitrificans</i>
C. cells encapsulated in liquid membranes
D. Both (a) and (b)
E. <i>Nitrosomonas europaen</i>
Answer» E. <i>Nitrosomonas europaen</i>
Discussion
6.

Which of the following subgroup/(s) belong/(s) to the Baculo viruses?
A. Nuclear polyhedrosis viruses
B. Granulosis viruses
C. Oryctestypes
D. All of these
Answer» E.
Discussion
7.

The heavily polluted zone of water reservoir is known as
A. pleosaprophytic zone
B. mesosaprophytic zone
C. oligosaprophytic zone
D. none of these
Answer» B. mesosaprophytic zone
Discussion
8.

Streptomyces griseochromogenes is reported to show a potent curative effect against
A. rice blast disease
B. yellow blight of maize
C. milo of soybean
D. eye spot of sugarcane
Answer» B. yellow blight of maize
Discussion
9.

Which of the following/(s) can be used for the reduction of nitrate in waste water?
A. Growth of Hypomicrobium in presence of added methanol
B. <i>Micrococcus denitrificans</i>
C. cells encapsulated in liquid membranes
D. Both (a) and (b)
E. <i>Nitrosomonas europaen</i>
Answer» D. Both (a) and (b)
Discussion
10.

Inundation involves use of a/an
A. large number of organisms over a short time to suppress/destroy a population
B. organism over a short time to suppress/destroy a population
C. large number of organisms over a long time to suppress/destroy a population
D. organism over a long time to suppress/destroy a population
Answer» B. organism over a short time to suppress/destroy a population
Discussion
11.

Milbemycin is known to exhibit a broad spectrum of activity against
A. agricultural pests
B. agricultural herbs
C. agricultural insects
D. all of these
Answer» B. agricultural herbs
Discussion
12.

The rate of degradation and microbes resistance to toxic pollutants remain better when the
A. mixed cell population is used
B. individual cell is used
C. mixed cell population along with metals is used
D. individual cell along with metal is used
Answer» B. individual cell is used
Discussion
13.

Which of the following herbicide is known to be effective against perennial shrubs, annual weeds and weeds of rice?
A. Cycloheximide
B. Anisomycin
C. Herbicidin
D. Bialaphos
Answer» B. Anisomycin
Discussion
14.

Which of the bacteria is considered for biological leaching?
A. <i>T. thiooxidans</i>
B. <i>T. ferrooxidans</i>
C. <i>Ferrobacillus terrooxidans</i>
D. all of these
Answer» E.
Discussion
15.

Which of the following accumulates from factory waste?
A. <i>Pseudomonas aeruginosa</i>
B. <i>Thiobacillus</i>
C. <i>Pseudomonas putida</i>
D. <i>Zoogloea ramigera</i>
Answer» E.
Discussion
16.

Which of the following can be used for the removal of color from the effluents of pulp mill?
A. <i>Coriolus versicolor</i>
B. entrapped in calcium alginate beads
C. <i>Phanerochaete chrysosporium</i>
D. Both (a) and (b)
E. <i>Nitrosomonas europaen</i>
Answer» D. Both (a) and (b)
Discussion
17.

Which of the following is the most effective for the rice sheath blight pathogen, Pellicularia sasakii?
A. Polyoxin D
B. Polyoxin B
C. Polyoxin L
D. Polyoxin C
Answer» B. Polyoxin B
Discussion
18.

Which of the following is selectively effective against dicot weeds?
A. Cycloheximide
B. Anisomycin
C. Herbicidin A and B
D. Bialaphos
Answer» D. Bialaphos
Discussion