Quiz: Was this art made by a human or a robot?

A work by Jon McCormack from Fifty Sisters, a series of 50 digital plant images created using an algorithm.

This week, we've been talking about all things artificial intelligence: how it works, and how it will change our careers and personal lives over the coming decades.

But there are some things that seem particularly human, and one of the major ones is creativity.

Here are a range of artworks. See if you can tell which were created by a human and which by machine.