Its true because their will be a noted reduction in the amount of hemoglobin which is responsible for carrying oxygen in blood
It is a prehistoric bug that is mostly closely related to the arachnids of today. I lacks a spinneret though. It is one of the first trigonotarbids to ever be described. (It looks like a spiky tick. Seriously)
Your plant would start to die, for it does not get the mineral and nutrients it gets from the water