Railways General Science & Technology Biology in Human Welfare Sample Paper

done Biology in Human Welfare Sample Test Paper-34 Total Questions - 20    [Download]

• question_answer1)

  Mycorrhizal biotechnology has been used in rehabilitating degraded sites because Mycorrhiza enables the plants to

  1. Resist drought and increase absorptive area

  2. Tolerate extremes of pH

  3. Resist disease infestation

  Select the correct answer using the codes given below.

  A)
   1 only
  done clear
  B)
          2 and 3 only
  done clear
  C)
   1 and 3 only    
  done clear
  D)
   1, 2 and 3
  done clear
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• question_answer2)
  Streptokinase which is used as a 'clot buster' obtained from
  A)
   Streptococcus
  done clear
  B)
   Staphylococcus
  done clear
  C)
   Lactobacillus    
  done clear
  D)
   Saccharomyces
  done clear
  View Answer play_arrow

• question_answer3)

  Consider the following organisms:

  1. Agariciis

  2. Nostoc

  3. Spirogyra

  Which of the above is/are used as bio fertilizer /bio fertilizers?

  A)
   1 and 2
  done clear
  B)
   2 only
  done clear
  C)
   2 and 3
  done clear
  D)
   3 only
  done clear
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• question_answer4)
  Which one of the micro-organism is used for production of citric acid in industries?
  A)
   Lactobacillus bulgaricus
  done clear
  B)
   Penicillium citrinum
  done clear
  C)
   Aspergillus niger
  done clear
  D)
   Rhizopus nigricans
  done clear
  View Answer play_arrow

• question_answer5)
  Yogurt and buttermilk are produced with the use of
  A)
   Saccharomyces
  done clear
  B)
   Penicillium
  done clear
  C)
   Lactobacillus    
  done clear
  D)
   Aspergillus
  done clear
  View Answer play_arrow

• question_answer6)

  Other than resistance to pests, what are the prospects for which genetically engineered plants have been created?

  1. To enable them to withstand drought

  2. To increase the nutritive value of the produce

  3. To enable them to grow and do photosynthesis in spaceships and space stations

  4. To increase their shelf life

  Select the correct answer using the codes given below:

  A)
   1 and 2 only    
  done clear
  B)
   3 and 4 only
  done clear
  C)
   1, 2 and 4 only
  done clear
  D)
          1, 2, 3 and 4
  done clear
  View Answer play_arrow

• question_answer7)
  Ganga and Yamuna action plan is initiated by
  A)
   Ministry of Environment and Forest.
  done clear
  B)
   Ministry of Agriculture.
  done clear
  C)
   Ministry of Wild-life conservation.
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer8)
  Biogas consists of
  A)
   Carbon monoxide, methane and hydrogen.
  done clear
  B)
   Carbon dioxide, methane and hydrogen.
  done clear
  C)
   Carbon monoxide, ethane and hydrogen.
  done clear
  D)
   Carbon dioxide, ethane and hydrogen.
  done clear
  View Answer play_arrow

• question_answer9)
  Given below are the names of four energy crops. Which one of them can be cultivated for ethanol?
  A)
   Jatropha          
  done clear
  B)
   Maize
  done clear
  C)
   Pongamia        
  done clear
  D)
   Sunflower
  done clear
  View Answer play_arrow

• question_answer10)
  The antibiotic "chlorellin" is extracted from the genus
  A)
   Chlamydomonas
  done clear
  B)
   Chlorella
  done clear
  C)
   Spirogyra         
  done clear
  D)
   Batrachospermum
  done clear
  View Answer play_arrow

• question_answer11)
  The most common species for bee-keeping in India is
  A)
   Apis florae       
  done clear
  B)
   Apis mellifera
  done clear
  C)
   Apis dorsata     
  done clear
  D)
   Apis indica
  done clear
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• question_answer12)
  Chloramphenicol and Erythromycin (broad spectrum antibiotics) are produced by
  A)
   Streptomyces   
  done clear
  B)
   Nitrobacter
  done clear
  C)
   Rhizobium        
  done clear
  D)
   Penicillium
  done clear
  View Answer play_arrow

• question_answer13)
  The development and flourishment of fishery industry has lead to
  A)
   Green revolution
  done clear
  B)
          Blue revolution
  done clear
  C)
   Silver revolution
  done clear
  D)
   White revolution
  done clear
  View Answer play_arrow

• question_answer14)
  Lactic acid bacteria convert milk into curd and improves its nutritional quality by enhancing
  A)
   Vitamin A        
  done clear
  B)
   vitamin B
  done clear
  C)
   Vitamin C        
  done clear
  D)
   vitamin D
  done clear
  View Answer play_arrow

• question_answer15)
  Which gas is responsible for the puffed-up appearance of dough?
  A)
   \[C{{O}_{2}}\]
  done clear
  B)
   \[{{O}_{2}}\]
  done clear
  C)
   \[S{{O}_{2}}\]
  done clear
  D)
   \[N{{O}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer16)
  Vinegar is prepared from alcohol with the help of
  A)
   Lactobacillus    
  done clear
  B)
   Acetobacter
  done clear
  C)
   Azotobacter      
  done clear
  D)
   Rhizobium
  done clear
  View Answer play_arrow

• question_answer17)
  A genetically engineered micro-organism used successful in bioremediation of oil spills is a species of
  A)
   Pseudomonas
  done clear
  B)
          Trichoderma
  done clear
  C)
   Xanthomonas
  done clear
  D)
   Bacillus
  done clear
  View Answer play_arrow

• question_answer18)
  Which of the following fungi is found useful in the biological control of plant disease?
  A)
   Mucor mucido
  done clear
  B)
   Trichoderma viridae
  done clear
  C)
   Phytophthora parasitica
  done clear
  D)
   Penicillium notatum
  done clear
  View Answer play_arrow

• question_answer19)
  Jatropha is a
  A)
   Biodiesel crop
  done clear
  B)
          bio petro crop
  done clear
  C)
   Fibre crop        
  done clear
  D)
   food crop
  done clear
  View Answer play_arrow

• question_answer20)
  Lactic acid bacteria convert milk into curd and improves its nutritional quality by enhancing
  A)
   Vitamin A        
  done clear
  B)
   Vitamin B
  done clear
  C)
   Vitamin C        
  done clear
  D)
   Vitamin D
  done clear
  View Answer play_arrow