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3556
Translocation of food substances in plants takes place through
  • A. collenchyma
  • B. parenchyma
  • C. phloem
  • D. sclerenchyma
  • E. xylem
View Answer & Discuss (1) NECO 2003
3557
Herbicides are chemicals used to
  • A. check the spread of diseases
  • B. control dormancy in seeds
  • C. control insects
  • D. control weeds
  • E. control pests
View Answer & Discuss (1) NECO 2003
3558
The sun rays reach the earth’s surface by
  • A. conduction
  • B. convection
  • C. radiation
  • D. reflection
  • E. refraction
View Answer & Discuss NECO 2003
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3559
The following are effects of food shortage on population size EXCEPT
  • A. competition
  • B. decline in reproduction
  • C. emigration
  • D. increase in natality
  • E. mortality
View Answer & Discuss (1) NECO 2003
3560
Vitamin K deficiency causes
  • A. constipation
  • B. indigestion
  • C. low sperm count
  • D. uncontrolled haemorrhage
  • E. stomach and duodenal ulcer
View Answer & Discuss (1) NECO 2003
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