Explain why each of the following facts might make accurate classification of a species difficult

a) some plants reproduce asexually

b) many duck species interbreed to produce fertile offspring

A) The definition of a species is having two organisms that can reproduce to create a fertile offspring despite. So it will be difficult for asexual organisms to fit in there

B) When it says new duck species breed to create fertile offspring it may mean breed as with dogs, you can cross any dog with another dog to create hybrids or a breed