Mast, Samuel Ottmar, 1871- · New York, J. Wiley · leaf 199
icate that this is not only the most sensitiveregion, but that it is the only region sensitive to light. At i84 LIGHT AND THE BEHAVIOR OF ORGANISMS the anterior end there are two minute cone-shaped pro-tuberances not over 0.5 mm. ai3art (Fig. 30). These pro-tuberances can barely be seen with the… … D I I I — 5 mm- 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. g). B, camera outline, dorsal view showing anteriorend expanded. C, same showing anterior end…
Light -- Physiological effect · Phototropism
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