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Biology past questions waec 1

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WAEC Past Questions and Answers on Biology Compiled by ​EduNgr.com From 2016 WAEC Past Questions Question 1 In evolution, analogous structures are significant because they show Options A) physiological diversity B) functional diversity C) genetic diversity D) structural diversity The correct answer is A. Explanation : In evolutionary biology, the term analogous structures pertain to the various structures in different species having the same function but have evolved separately, thus do not share common ancestor. In comparison, the homologous structures pertain to the structures that show similar morphology and anatomy but have different functions. Moreover, the homologous structures are believed to have evolved from a common ancestor since they show similar development pattern during embryonic development. Question 2 Which of the following statements reflects the mechanism of natural selection? Options A) There are variations within every species B) Individuals of every species are genetically identical C) No organism in a species dies before sexual maturity D) Organisms with selective advantages are less likely to survive The correct answer is A. Explanation: ​Natural selection is the process whereby organisms better adapted to their environment tend to survive and produce more offspring. The theory of its action was first fully expounded by Charles Darwin, and it is now regarded as be the main process that brings about evolution. Question 3 Which of the ...
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