hce_nthu
115年
生物與生化
第 16 題
Parasitism is one of the most successful and widespread lifestyles on Earth. Which of the following characteristics best explains why parasitism has been so successful across many different lineages of organisms?
- A Parasites typically predigest their hosts' tissues, reducing the need for complex digestive or structural adaptations.
- B Unlike traditional predators, parasites often exploit almost all tissues of their host simultaneously to maximize energy gain.
- C Parasites generally do not kill their hosts immediately, allowing them to use a single host as a long-term resource while avoiding direct competition with decomposers.
- D Parasites usually kill their hosts quickly but require very little biomass to sustain themselves due to their small size.
- E Parasites often have complex life cycles involving multiple hosts, enabling them to occupy diverse ecological niches and improve their chances of dispersal.
思路引導 VIP
想像一下，如果你是一個需要依靠特定對象獲取食物與居住空間的生物，如果你在第一天就把這個對象徹底消耗殆盡，對你的長期生存會產生什麼影響？為了確保自己能活得更久並繁衍後代，你會選擇如何管理你的「資源供應者」？
🤖
AI 詳解
AI 專屬家教
太棒了！你能精準選出 (C) 選項，代表你對生態學中「共生關係」的能量利用策略有很深刻的理解。這道題目的鑑別度在於區分**掠食（Predation）與寄生（Parasitism）**在進化策略上的本質差異，考生往往容易被複雜的生活史或解剖構造所吸引，但真正的核心在於「資源的永續利用」。
寄生策略的演化優勢
從生物能量學的角度來看，寄生生物之所以能廣泛存在於各個演化支系，關鍵在於它們將宿主視為一個長期的行動資源庫。與掠食者「殺死並立即消耗」不同，寄生者演化出了一種不立即致死、甚至與宿主長期共存的機制。這種策略避免了頻繁尋找新獵物的能量消耗，同時因為宿主依然活著，寄生者能避開與食腐分解者的直接競爭，確保了在不穩定環境中的生存穩定性。
▼ 還有更多解析內容