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Biology 1990 JAMB Past Questions

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26
During mammalian embryo development, large amounts of oestrogen and progesterone are produced in the
  • A. umbilical cord
  • B. amnion
  • C. placenta
  • D. amniotic fluid
View Answer & Discuss (3) JAMB 1990
27
Fruits which develop without fertilization are described as
  • A. simple
  • B. pathencorpic
  • C. aggregate
  • D. compound
View Answer & Discuss (1) JAMB 1990
28

The type of placentation shown in the figure above is a

  • A. parietal
  • B. marginal
  • C. axile
  • D. free-central
View Answer & Discuss (5) JAMB 1990
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29
The elephant grass is propagated vegetatively by means of
  • A. corms
  • B. bubils
  • C. suckers
  • D. stolons
View Answer & Discuss (6) JAMB 1990
30
The part of the ear that is concerned with balance is the
  • A. semi-circular canals
  • B. incus
  • C. malleus
  • D. Eustachian tube
View Answer & Discuss (2) JAMB 1990
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