What specialized respiratory root structures allow mangrove trees in the waterlogged Sundarbans mud to breathe atmospheric oxygen?

Answer and explanation

Correct answer: A. pneumatophores

  1. Step 1: Pneumatophores (blind vertical root projections) rise above the tidal mud and contain lenticels for gaseous exchange. Answer: pneumatophores. Why not the others: Mycorrhizae fungi, Photosynthetic blades and Prop buttress roots don't fit.

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