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Biology Past Questions and Answers

Waec Biology Questions

Question 1836:
If a cross is made between a pure-breeding red flowered plant and a pure-breeding white flowered plant
where R is dominant for red flower and r is recessive for white, the most likely result of F generation will be
  • A 75% red flowers and 25% white flowers
  • B All red flowers
  • C 75% white flowers and 25% red flowers
  • D 50% red flowers and 50% white flowers
  • E All white flowers
View Answer & Explanation
Question 1837:
A man with blood group A (TAP) married a woman with blood group O (pp). Which of the following is the
probable ratio of the blood groups of the offspring?
  • A 1:1
  • B 3:1
  • C 2:1:1
  • D 1:2:1
  • E 4:1
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Question 1838:
Increasing specialization of structure and function among animals of the same class and order for survival in new and different environments is called
  • A Adaptive radiation
  • B Phylogeny
  • C Homology
  • D Analogy
  • E Ontogeny
View Answer & Explanation
Question 1839:
When large numbers of organisms share limited space and resources the result is
  • A Immigration
  • B Commensalism
  • C Symbiosis
  • D Extinction
  • E Competition
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Question 1840:
The change in colour of the chameleon serves as a means of
  • A Attraction to the opposite sex
  • B Repulsion of the enemy
  • C A camouflage from a predator
  • D Regulation of body temperature
  • E . production of a variety of skin pigments
View Answer & Explanation