Multiple choice general knowledge science & technology Alga used for hydrocarbon production is- Gracilaria Chlorella Botryococcus Sargassum Reveal answer Fill a bubble to check yourself C Correct answer Explanation Botryococcus (C) is a green alga known for producing long-chain hydrocarbons, making it promising for biofuel production. Gracilaria (A), Chlorella (B), and Sargassum (D) are algae but not primarily hydrocarbon producers.