Biological Classification MCQ

Test your knowledge with important Biological Classification MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Biological Classification MCQs at Bissoy

• Lichens are indicators of pollution because ________
  ক

  They grow in oxygen depleted regions

  খ

  They don’t grow in polluted regions

  গ

  They grow in polluted regions

  ঘ

  Their growth indicates that the region has very high carbon levels
• RNA of the viroids is of low molecular weight when compared to viruses.
  ক

  True

  খ

  False
• The fungal portion in Lichens is known as _________
  ক

  Mycobiant

  খ

  Phycobiant

  গ

  Capsobiant

  ঘ

  Deuterobiant
• AIDS stands for _______
  ক

  Acquired Immuno Deficiency Syndrome

  খ

  Acquired Immuno Disease Syndrome

  গ

  All India Disease Syndromes

  ঘ

  Aided Institute for Development and Sciences
• Which among the following is odd?
  ক

  Mumps

  খ

  Small pox

  গ

  Influenza

  ঘ

  Potato spindle tuber disease
• Who discovered viroids?
  ক

  T.O. Diener

  খ

  Alexander Flemming

  গ

  W.M. Stanley

  ঘ

  Robert Hooke
• Which among the following is not a difference between viruses and viroids?
  ক

  Viruses contain DNA whereas viroids don’t contain DNA

  খ

  Viruses contain protein coat whereas viroids don’t contain protein coat

  গ

  Viruses contain RNA whereas viroids don’t contain RNA

  ঘ

  Viruses are found in bacteria, animals and plants but viroids only in plants
• Viruses are smaller than viroids.
  ক

  True

  খ

  False
• Read the following paragraph and answer the following question. Hershey-Chase experiment broke the barriers of science and expanded the understanding of life. In this experiment, two sets of bacteriophages are used in which one contains radioactive sulphur in its protein coat (Set-I) and other contains radioactive phosphorus in its DNA (Set-II). These two sets were allowed reproduce in E.Coli culture and then centrifuged. Which among the following are correct Set-I and Set-II after centrifugation?
  ক

  Set-I and Set-II contains radioactive sulphur and phosphorous in their supernatant respectively

  খ

  Set-I and Set-II contains radioactive sulphur in their supernatant

  গ

  Set-I contains radioactive sulphur in its pellet and set-II contains radioactive phosphorous in its supernatant

  ঘ

  Set-I and Set-II contains radioactive sulphur and phosphorous in their pellet respectively
• Viruses are an example of ________
  ক

  Obligate parasites

  খ

  Facultative parasites

  গ

  Commensalism

  ঘ

  Ectoparasites
• Who proved that viruses are crystalline like structures?
  ক

  W M Stanley

  খ

  Ivanowsky

  গ

  M W Beijerinek

  ঘ

  Lavoisier
• Viruses contain sheath made of ______
  ক

  Nucleic acids

  খ

  Proteins

  গ

  Saccharides

  ঘ

  Chitin
• Which among the following are incorrect about Viruses?
  ক

  Viruses are acellular

  খ

  Viruses are smaller than bacterium

  গ

  Viruses can perform all of their metabolic activities except reproduction when outside a living host

  ঘ

  Viruses are non-living organisms
• Why are viruses not included in any of the five kingdoms?
  ক

  There are already more than thousands of organisms in the five kingdoms and hence, no space to include viruses

  খ

  Viruses are not living organisms

  গ

  Viruses reproduce rapidly which is in fact weird and therefore they are not classified under any of the five kingdoms

  ঘ

  Viruses are so small that they can’t be studied
• The word “Virus” means ______
  ক

  Venom

  খ

  Proliferate

  গ

  Change

  ঘ

  Tremendous
• Viruses that infect plants have ________
  ক

  single stranded RNA

  খ

  double stranded RNA

  গ

  single stranded DNA

  ঘ

  double stranded DNA
• Viruses that infect bacterium are called as _________
  ক

  Bacteriophages

  খ

  Viral bacterium

  গ

  Bacteiocapsid

  ঘ

  Bacteriomycin
• Viruses in animals contain both RNA and DNA.
  ক

  True

  খ

  False
• Viruses are living organisms.
  ক

  True

  খ

  False
• Which among the following are not mycoses?
  ক

  Candidiasis

  খ

  Scabies

  গ

  Tinea versicolor

  ঘ

  Cryptococcosis
• The branch involved in study of Fungi is called Mycology.
  ক

  True

  খ

  False
• Mushroom consists of stem, cap and spores at the bottom of the cap.
  ক

  True

  খ

  False
• Yeast grows exponentially through budding. If one budding cycle takes 90 minutes, what will be the population of yeast after 144 hours if the initial population N0 = 5?
  ক

  480

  খ

  5 × 296

  গ

  96×25

  ঘ

  144×25
• Assume that after every budding cycle, the parent organism becomes barren. And the daughter organism produced further gives rise to a new organism. After a period of 78 hours, how many fertile and barren organisms would be left if the initial number of organisms N0 = 2 (Assume that every budding cycle takes 2 hours)?
  ক

  1 and 239-1 respectively

  খ

  1 and 39 respectively

  গ

  2 and 78 respectively

  ঘ

  2 and 240-1 respectively
• Which is the main source of energy for yeast?
  ক

  Sunlight

  খ

  Nitrogen

  গ

  Organic compounds

  ঘ

  Nitrates
• Which among the following fungus are used in the manufacture of proteins?
  ক

  Asperigillus niger

  খ

  Saccharomyces cerevisiae

  গ

  Trichoderma

  ঘ

  Aspergillus flavus
• Yeast grows in ______
  ক

  damp and dark conditions

  খ

  dry and cold conditions

  গ

  sunlight

  ঘ

  hot deserts
• Who discovered Penicillin and when?
  ক

  Alexander Graham Bell in 1918

  খ

  Alexander Flemming in 1928

  গ

  Alexander Flemming in 1938

  ঘ

  Alexander Flemming in 1948
• Penicillin was first discovered from _______
  ক

  Penicillium roqueforti

  খ

  Penicillium chrysogenum

  গ

  Penicillium notatum

  ঘ

  Penicillium camemberti
• Which among the following is used in preparation of anti-biotic?
  ক

  Yeast

  খ

  Penicillium

  গ

  Mushroom

  ঘ

  Rhizopus