Static Quiz 19 November 2025 (Environment)
Q1. Which causes harmful algal blooms (HABs) leading to red tides in marine ecosystems? a) Diatomsb) Dinoflagellatesc) Cyanobacteriad) Euglenoids Answer: (b) Dinoflagellates Explanation :• Red tides are typically caused by dinoflagellates, especially Karenia brevis, Alexandrium, Gymnodinium.• They release brevetoxins, saxitoxins → neurotoxicity in fish, marine mammals, and humans (shellfish poisoning).• Dinoflagellates proliferate under warm SSTs, […]