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Animal, Vegetable or Mineral?
by
Jim Blackburn
Remember an old guessing game? I hold out my clenched hand and ask
you what am I holding? It's getting more complicated.
In olden days a living thing was either animal or vegetable, but now
taxonomists have added some more Kingdoms, their divisions of all
living things. The animals are Kingdom Animalia and the vegetables
are Kingdom Plantae. We might have agreed to put mushrooms in with
the plants; however, taxonomists have a separate Kingdom Fungi for 'em.
Taxonomists have now decided that these three kingdoms are an
outgrowth of a couple more basic earlier and still present kingdoms!
There's Kingdom Protoctista, a catchall for multicellular organisms
that don't fit in animal, plant or fungus kingdoms. And there is an
earlier kingdom giving rise to all the above, Kingdom Prokaryotae.
These singular organisms include bacteria, those with no nucleus or
subcellular organellas.
Thus this living grouping has no less than five Kingdoms.
So the object in your clenched fist may not be an old mineral, an
animal or a vegetable or even a fungus but a protoctista or even a
prokaryotae that you can't even see!
Perhaps washing your hands before holding out your fist might
eliminate some of those little buggers. Otherwise a smart guesser
might give you a hard time about what's really in your fist.
And we have all these here in the desert! The rocks are for sure,
the plants and animals, true, but the little buggers are with us
too.
I suppose I could talk a little more about the options, but enough
is enough.
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