Neco Model Questions Vol1 2020 Biology Question 19
Practice objective / multiple choice question 19 from the 2020 Neco Model Questions Vol1 Biology examination.
A genus *Xanthus* originally contained 12 species. Recent molecular studies reclassify these species as follows: *Xanthus* retains 7 species, a newly erected genus *Aureus* receives 5 species, and 2 species are transferred to the existing genus *Viridis*. (a) What is the percentage decrease in the number of species in *Xanthus*? (b) What fraction of the original 12 species are now placed in *Aureus*? Express the fraction in lowest terms.
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This is Neco Model Questions Vol1 2020 Biology Question 19. It is one of the objective questions from the 2020 Neco Model Questions Vol1 Biology examination.
Difficulty level: Hard .
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