Which of these adaptations allow the water hyacinth plant to survive in an aquatic region? (i) Bulbous swelling filled with air
(ii) Needle shaped leaves
(iii) Lightweight body
(iv) Fixed roots

Water hyacinth exhibits hydrophytic adaptations which include reduced epidermis cells lacking cuticle in most cases, presence of large air spaces (7~50 μm), reduced vascular tissue and absorbing structures.

Option i and iii are correct... If only one option allowed, then Option i

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