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576

Haemophilia results from the mutation of the genes

  • A. in the sex chromosome
  • B. which control skin colour
  • C. which control the mechanism for blood-clotting
  • D. which control the formation of haemoglobin
View Answer & Discuss (5) JAMB 1990
577
In a savanna ecosystem the abiotic factors include
  • A. legumes, temperature and sandy soil
  • B. water, temperature and soil
  • C. minerals, oxygen and reptiles
  • D. water, soil and grasses
View Answer & Discuss (1) JAMB 1990
578
Which of the following is an omnivore?
  • A. Praying mantis
  • B. Hawk
  • C. Mouse
  • D. Grasshopper
View Answer & Discuss (5) JAMB 1990
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579
which of the organisms will have the lowest population in an ecosystem?
  • A. Hawk
  • B. Cowpea
  • C. Praying mantis
  • D. Mouse
View Answer & Discuss (2) JAMB 1990
580
The salinity of a brackish enviroment
  • A. increases immediately after rain
  • B. increase at the end of rainy season
  • C. Decrease with increase in micro-organisms
  • D. increase during dry season
View Answer & Discuss JAMB 1990
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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