So how will you know that they are false? Well, by seeing what plants produce, you know what kind of plants they are [MET]. For example, thornbushes cannot produce grapes, so ◄no one can pick grapes from thornbushes./can anyone pick grapes from thornbushes?► [RHQ] And thistles cannot produce figs, so ◄no one can pick figs from thistles./can anyone pick figs from thistles?► [RHQ]