The number of plant species obtained from a population study of a garden is as follows: Guinea grass (15), Ipomoea spp (5), Sida spp (7) and Imperata spp (2...

Answer Details

The total number of plant species in the population study is: 15 (Guinea grass) + 5 (Ipomoea spp) + 7 (Sida spp) + 23 (Imperata spp) = 50 The percentage of occurrence of Imperata spp is: (23 / 50) x 100% = 46% Therefore, the correct answer is option (C) 46%.