GK-Biology Question and Answer
GK-Biology Question and Answer
73. Nitrogen is fixed in ecosystems in ways stated below. Which one of the statements below is
false?
false?
- By cyanobacteria
- By electrical discharges in the atmosphere
- By industrially synthesised fertilizer
- By denitrification
74. Ptyalin is an enzyme produced in the
- salivary glands
- pituitary glands
- thyroid glands
- pancreas
75. Mycobacterium leprae causes leprosy, Corynebacterium diphtheria causes diphtheria and Vibrio comma causes
- tetanus
- influenza
- cholera
- typhoid
76. In which decade was the American Institute of Electrical Engineers (AIEE) founded?
- 1850s
- 1880s
- 1930s
- 1950s
77. What is part of a database that holds only one type of information?
- Report
- Field
- Record
- File