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Doğru Cevap: COkuma & Anlama (Reading) • Reading Comprehension Passages
Deep-sea hydrothermal vents, discovered along mid-ocean ridges in the late 1970s, completely overturned the long-held biological dogma that all complex life on Earth ultimately depends on solar energy. In these abyssal ecosystems, where sunlight never penetrates and ambient water pressure is crushing, specialized bacteria generate organic matter through chemosynthesis rather than photosynthesis. Utilizing hydrogen sulfide and other toxic dissolved minerals spewing from subterranean vents, these microbes form the primary foundation of a bizarre food web. Giant tube worms lacking digestive tracts survive through symbiotic associations with these bacteria, while unique crustaceans and predatory cephalopods thrive in their periphery. Consequently, hydrothermal vent communities represent isolated biospheres demonstrating that complex ecosystems can thrive under extreme geochemical conditions.
According to the passage, the discovery of hydrothermal vents was biologically revolutionary because it ----.
A
proved that photosynthetic organisms can survive without water
B
revealed the exact mechanisms of continental drift along oceanic trenches
C
disproved the assumption that all advanced life forms rely on solar radiation
D
demonstrated that hydrogen sulfide is universally safe for all marine life
E
confirmed that the deep seafloor lacks active biological diversity
Adım Adım Çözüm Analizi:
Metinde 'completely overturned the long-held biological dogma that all complex life on Earth ultimately depends on solar energy' denmektedir. Yani tüm karmaşık canlı yaşamının eninde sonunda güneş enerjisine bağlı olduğu dogmasını kökten değiştirmiştir. C seçeneğinde belirtilen 'disproved the assumption that all advanced life forms rely on solar radiation' ifadesi bu devrimsel etkiyi doğrudan karşılamaktadır.
Sonuç: C şıkkı.