Having two flagella; possessing two whip-like organelles used for movement.
From Latin 'bi-' (two) plus 'flagellum' (whip), with the suffix '-ate.' This variant spelling of 'biflagelate' is also used in microbiology and biology.
The algae that causes red tides is often biflagellate—those two whips let it spin and navigate toward light, which is actually what causes it to swarm in harmful blooms!
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