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86
One significant difference between roots and stem is that
  • A. Branch roots originate in the pericycle while stem do not
  • B. Stems are always bove the ground while root are always below the ground
  • C. Stems are positively geotropic while roots are negatively geotropic
  • D. Stem are sometime used for storage while roots are never used
  • E. Stems grow in both length and circumference while root grow only in length
View Answer & Discuss (13) JAMB 1979
87
In Mucor or Rhizopus carbohydrate is absorb in the form of
  • A. starch
  • B. sucrose
  • C. glucose
  • D. glycogen
  • E. arabinose
View Answer & Discuss (11) JAMB 1980
88

One of the following statement is NOT true of spirogyra

  • A. it is a simple multicellular plant
  • B. during conjugation, its gametes, which are structurally and physiologically similar, fuses to form a zygote
  • C. it possesses spiral chloroplast which enables the plant to photosynthesize
  • D. its cells are protected externally by layer of mucilage
  • E. there are pyrenoids along the chloroplast
View Answer & Discuss (38) JAMB 1980
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89
Which of the following spreads malaria in Nigeria?
  • A. Anopheles mosquito
  • B. Culex mosquito
  • C. Aedes mosquito
  • D. Tsetse fly
  • E. House fly
View Answer & Discuss (7) JAMB 1980
90

The vacuole of a plant cell is

  • A. a large empty space
  • B. smaller than that of animal cell
  • C. filled with air
  • D. an ordinary vacuum
  • E. surrounded by a membrane
View Answer & Discuss (9) JAMB 1980
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