I got this ZZ plant (Zamioculcas) from the nursery (and tried choosing the best one) yesterday. I noticed some yellow leaves and broken leaves. When I asked the gardener (or whatever we call her) she said it was caused by sunlight. I don't know the real cause of it. Upon Googling, I learned that it was due to overwatering. Is this the case?
Also, does it need repotting?