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3791
The activity of ptyalin is likely to decrease with an increase in the concentration of
  • A. oxygen
  • B. starch
  • C. protein
  • D. acid
View Answer & Discuss (10) JAMB 2016
3792
Seed plants are divided into
  • A. monocoty ledons and dicotyledons
  • B. tracheophytes and ferns
  • C. angiosperms and gymnosperms
  • D. thallophytes and bryophytes
View Answer & Discuss (9) JAMB 2016
3793
The adaptive importance of the nuptial flight from termite colonies is to
  • A. ensure cross-breeding between members of one colony and another
  • B. disperse the reproductives in order to establish new colonies
  • C. provide abundant food for birds and other animals during the early rains
  • D. expel the reproductives so as to provide enough food for other members
View Answer & Discuss (1) JAMB 2016
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3794
The sequence of the one-way gaseous exchange mechanism in a fish is
  • A. gills ⇢ operculum ⇢ mouth
  • B. mouth ⇢ gills ⇢ operculum
  • C. mouth ⇢ operculum ⇢ gills
  • D. operculum ⇢ mouth ⇢ gills
View Answer & Discuss (3) JAMB 2016
3795

In the nitrogen cycle, the nitrates in the soil are converted to atmospheric nitrogen by

  • A. puterfying bacteria
  • B. nitrogen-fixing bacteria
  • C. nitrifying bacteria
  • D. denitrifying bacteria
View Answer & Discuss (10) JAMB 2016
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts