Intrigued, Li Wen visits the Singapore Botanic Gardens. Beneath the red sanders tree, she finds a rusted lockbox with a note: “For those who seek knowledge, answer the guardians’ challenges.” Inside is a cryptic first question:
“How do mangroves, which thrive in saltwater, produce fresh fruit?” (Answer: By excreting salt through their leaves and using selective osmosis. ) singapore+junior+biology+olympiad+past+papers+exclusive
But the box holds no more questions—only a key labeled “Challenge II: The NUS Herbarium.” Intrigued, Li Wen visits the Singapore Botanic Gardens
News of “the hidden papers” spreads. Enter Kelvin, a cocky student from Anglo-Chinese School, who sees them as a shortcut to victory. He confronts Li Wen: “Hand it over. Those papers were meant for only the elite.” which thrive in saltwater