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Biology JAMB Past Questions

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2341

In a cross involving a heterozygous red flower plant (Rr) and a white flowered plant (rr). What is the probability that the offspring will be Rr?

  • A. \(\frac{1}{2}\)
  • B. 1
  • C. 2
  • D. \(\frac{1}{4}\)
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2342

Inbreeding is highly discouraged in humans because it may  

  • A. increase the death rate of new born
  • B. lead to the birth of dwarfs
  • C. lead to high rate of competition among offspring
  • D. lead to outbreak of hereditary diseases
View Answer & Discuss (4) JAMB 2024
2343

One main feature of trees in the savanna habitat is the possession of

  • A. large, leathery leaves
  • B. straight slender stems with branches near the top
  • C. thin, smooth barks
  • D. thick, corky bark
View Answer & Discuss (2) JAMB 2024
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2344

Use the diagram above to answer the question that follows

The zone labelled II is called

  • A. supra-tidal zone
  • B. pelagic zone
  • C. littoral zone
  • D. benthic zone
View Answer & Discuss (24) JAMB 2024
2345

Which of the following structures enables the exchange of gases in insects?

  • A. skin
  • B. tracheae
  • C. Malpighian tubules
  • D. flame cell
View Answer & Discuss (2) JAMB 2024
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