Which dominant botanical tree family characteristically forms the emergent and upper canopy layers of Indonesia's lowland tropical rainforests on the Sunda Shelf?
Answer and explanation
Correct answer: D. Dipterocarpaceae
- Step 1: Lowland rainforests of Sumatra and Borneo are structurally dominated by the family Dipterocarpaceae (e.g., Shorea, Dipterocarpus, Dryobalanops). Step 2. They produce winged seeds and participate in synchronized mass mast-fruiting events every several years. Answer: Dipterocarpaceae. Why not the others: Myrtaceae includes eucalyptus and myrtles; Moraceae includes fig trees.
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