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Absorb solutes through the body surface (saprobic, osmotrophy).
Some Autotroph: synthesize organic compounds from inorganic
Some Autotroph synthesize
substances in the environment.
substances the Physiology
Protozoa are sensitive to many kinds of stimuli…
Touch (Cilia and ﬂagella)
Temperature changes (Ciliates, motionless bristles: act as receptors)
T˚: optimal: 16 to 25˚C, 37 ˚C (within rumen), 56˚C (thermal source)
within rumen), Light
Many attracted by light: Some are photophobes
Specialized sensory organelle, the stigma or eye-spot.
Found in photosynthetic ﬂagellates (some dinoﬂagellates)
Found Chemical and pH (optimal...
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- Spring '08