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What is the primary function of aerenchyma in aquatic plants?
EXPLANATION
Inland & Estuarine Fisheries Resources
- Aerenchyma Tissue in Aquatic Plants:
- Aerenchyma: Specialized parenchymatous tissue containing interconnected, continuous longitudinal gas-filled spaces (lacunae) found extensively in roots, stems, and leaves of aquatic macrophytes (hydrophytes like Typha, Phragmites, water hyacinth, and wetland rice).
- Primary Function: Provides a low-resistance internal gas-conduction pathway for the convective and diffusive transport of atmospheric oxygen from aerial leaves down to submerged roots and rhizomes embedded in anoxic, waterlogged sediments.
- Correct Option: Option 1 (To transport oxygen to roots).
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