Multiple choice Which of the following algae are used as source of bromine? Rhodomela Polysiphonia Vovox Ulothrix Only 1 and 2 Only 1 and 3 Only 2 and 3 Only 2 and 4 Only 3 and 4 Reveal answer Fill a bubble to check yourself A Correct answer Explanation Bromine is obtained from red algae like Rhodomela and Polysiphonia.