Shadow reflection

Japanese: 陰影反射 - いんえいはんしゃ
Shadow reflection

…For example, bivalve mollusks such as the giant clam reflexively retract their water tubes when a shadow falls on them. This is called the shadow reflex because it responds only to shadows. Primitive light sensors are also found in vertebrates. …

*Some of the terminology explanations that mention "shadow reflection" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…例えば,オオノガイのような二枚貝は,水管に影がさすと水管を反射的に引っ込める。影にのみ応答するので陰影反射と呼ばれている。原始的光覚器は脊椎動物にもある。…

※「陰影反射」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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