Multiple choice The most preferred strain for beta-carotene production is Phycomyces blakesleeanus Blakeslea trispora Choanephora cucurbitarum Clostridium acetobutylicum Reveal answer Fill a bubble to check yourself B Correct answer Explanation Blakeslea trispora is the most preferred strain for production of beta-carotene due to its high yield. It produces 3 g/l beta-carotene.