Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.
Advertisement

 Multiple Choice QuestionsMultiple Choice Questions

Advertisement
81.

Chloromycetin is obtained from

  • Streptomyces venezuelae

  • Streptomyces rimosus

  • Bacillus subtilis

  • Clostridium botulinum


82.

Ernest Chain and Howard Florey's contribution was

  • discovery of streptokinase

  • establishing the potential of penicillin as an effective antibiotic

  • discovery of the DNA sequencer

  • isolating the bacterial plasmid

  • isolating the bacterial plasmid


83.

Viruses of the genus Nucleopolyhedrovirus are employed as

  • Gobar gas producers

  • Biological control agents

  • Anaerobic sludge digesters

  • Antibiotics

  • Antibiotics


84.

The microbial biocontrol agent for butterfly caterpillar is

  • Bacillus thuringiensis

  • Sacchromyces

  • Lactobacillus

  • Cyanobacteria

  • Cyanobacteria


Advertisement
85.

Which of the following microbes is used for the commercial production of ethanol?

  • Clostridium butylicum

  • Trichoderma polysporum

  • Monascus purpureus

  • Saccharomyces cerevisiae

  • Saccharomyces cerevisiae


86.
Column I Column II
i. Statins A. Propionibacterium shermanii
ii. Swiss cheese B. Streptococcus
iii. Cyclosporin A C. Aspergillus niger
iv. Citric Acid D. Trichoderma polysporum
v. Clot buster E. Monaseus purpureus
  • i - E; ii - A; iii - D; iv - C; v - B

  • i - B; ii - A; iii - D; iv - D; v - C

  • i - C; ii - A; iii - B; iv - C; v - D

  • i - C; ii - E; iii - A; iv - D; v - B

  • i - C; ii - E; iii - A; iv - D; v - B


87.

Select the correct group of biocontrol agents.

  • TrichodermaBaculovirus, Bacillus thuringiensis

  • Oscillatoria, Rhizobium, Trichoderma

  • Nostoc, Azospirillium, Nucleopolyhedrovirus

  • Bacillus thuringiensis, Tobacco Mosaic Virus, Aphids


88.

Select the incorrect statement.

  • Inbreeding is essential to evolve purelines in any animal.

  • Inbreeding selects harmful recessive genes that reduce fertility and productivity

  • Inbreeding helps in accumulation of superior genes and elimination of undesirable genes.

  • Inbreeding increases homozygosity


Advertisement
89.

Match the following organisms with the products they produce.

A. Lactobacillus i. Cheese
B. Saccharomyces cerevisiae ii. Curd
C. Aspergillus niger iii. Citric acid
D.  Acetobacter aceti

iv. Bread

v. Acetic acid

Select the correct option.

  • A - ii; B - iv; C - iii; D - v

  • A - iii; B - iv; C - v; D - i

  • A - ii; B - i; C - iii; D - v

  • A - ii; B - iv; C - v; D - iii


90.

Polyblend, a fine powder of recycled modified plastic, has proved to be a good material for

  • used as a fertilizer

  • Construction of roads

  • Making tubes and pipes

  • Making plastic sacks


Advertisement