Behavior of the Lower Organisms

aboral side acid action system Amoeba anode attached avoiding reaction bacteria bacterium become behavior bend body carbon dioxide cathode ceases chemical cilia collect contact reaction continues course cyst determined direction of movement effect electric current Euglena fact factors flagella flatworm give the avoiding heat higher animals Hydra individuals induced induction shocks infusoria injurious long axis lower organisms ment metabolic Metazoa mouth move negative reaction object observed occurs optimum oral groove oral side orientation osmotic pressure oxygen Oxytricha Paramecia Paramecium pass peristomal physiological positive reaction posterior processes produced protoplasm Protozoa pseudopodium react reaction to gravity reaction to light reflex region responds result reversal sea anemones sea urchin seen shown solid solution source of light species specimens spiral Statkewitsch Stentor stimulating agent strong substances swarm spores swerving swim swim backward swims forward temperature tentacles tion transverse trichocysts tropism tube turning usually varied movements Vorticella