Mast, Samuel Ottmar, b.1871 · New York, J. Wiley & Sons; [etc., etc.] · leaf 197
on indicate that this is not only the most sensitiveregion, but that it is the only region sensitive to light. At 184 LIGHT AND THE BEHAVIOR OF ORGANISMS the anterior end there are two minute cone-shaped pro-tuberances not over 0.5 mm. apart (Fig. 30). These pro-tuberances can barely be seen with… … FIG. 30. Musca larva. A, side view anterior end expanded; a.sp., anteriorspiracular process showing seven spiracular papillae; o.t, optic tubercle. AfterHewitt (1908, PI. 30, Fig. Q). B, camera outline, dorsal view showing anteriorend expanded. C, same showing anterior end contracted, and optic…
Light -- Physiological effect · Phototropism
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