Mast, Samuel Ottmar, b.1871 · New York, J. Wiley & Sons; [etc., etc.] · leaf 159
he shaded side. This response is similar tothe avoiding reaction in Euglena, Trachelomonas, Chlamy-domonas and other unicellular forms. If Bancroft is correct in his description it is evident thatthe factors involved in orientation in a galvanic currentand in light are not the same, and that the… … II -0.1 mm-
Light -- Physiological effect · Phototropism
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