Mast, Samuel Ottmar, 1871- · New York, J. Wiley · leaf 161
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… … -0 1 mm— M
Light -- Physiological effect · Phototropism
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