According to the passage, which of the following statements is TRUE?

題目

According to the passage, which of the following statements is TRUE? A. The research on the Turritopsis dohrnii against human ageing has been broadly applied. B. In principle, Turritopsis dohrnii can live forever; however, most of them are short-lived. C. Jellyfish has a fixed biological clock which helps activate regeneration. D. Turritopsis dohrnii never die so that they overpopulate in the ocean.

官方答案

• 答案：B. In principle, Turritopsis dohrnii can live forever; however, most of them are short-lived.

解析

依文中描述，Turritopsis dohrnii 在老化或遭遇環境壓力時，可將細胞「轉分化」回到水螅體階段，重新展開生命週期，因此「原則上」具備不斷循環、不因老化而死亡的能力；但在自然界中，絕大多數個體會被捕食、生病或隨環境惡化而死，實際上多屬短命，故 B 正確。A 稱其抗老研究已廣泛應用於人類，文中並無此說；C 的「固定生理時鐘」並非文中機制，牠是靠逆轉生命週期而非依時鐘啟動再生；D 稱其從不死亡而造成海洋族群過度繁殖，與文中「多數個體短命」相反。

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官方資料

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• 官方答案 PDF

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