EXPERIMENT 10
28
EXPLANATION
In pond water, you can find a multitude
of living organisms — both plants and
animals. In the summer, lots of
organisms will have settled on the
slides within one to two weeks. A lot of
tiny water organisms will not swim
around freely in the water. They are
sedentary, meaning that they grow on
a fixed surface. Every animal or plant
species has its own preferences in this
regard. Some look for sunny,
horizontal spots, while others prefer
to settle on vertical surfaces.
On the surface of the water, you
will often find flower pollen, such
as pine pollen, which is spread by
the wind. In the water itself there
are all sorts of algae, single-
celled organisms, and a lot of
other aquatic organisms that can
simply be collected with the
pipette and transferred to a slide
for viewing.
Diatoms
Volvox algae
Paramecium
