Mast, Samuel Ottmar, b.1871 · New York, J. Wiley & Sons; [etc., etc.] · leaf 90
0.5 mm.- FIG. 8. Camera drawing representing different stages in the process of orien-tation of Amoeba proteus. I, Amoeba oriented in light nn before light // is turnedon; 2-9 successive positions at the time indicated on each after light // is turned on.Arrows represent the direction of streaming…
Light -- Physiological effect · Phototropism
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