I don't think that's right. If the ground is saturated, the plants won't absorb any of it, because it won't sink into the ground at all, because the ground is saturated.
(That is, unless you're talking about plants absorbing water from their leaves directly, before the water hits the ground. I don't know that plants do that when their roots already have plenty of water, but I also don't know that they don't.)
(That is, unless you're talking about plants absorbing water from their leaves directly, before the water hits the ground. I don't know that plants do that when their roots already have plenty of water, but I also don't know that they don't.)