Multiple choice In red algae, sex organs are: spermatangium as male and carpogonium with trichogyne as female organ antheridum as male and carpogonium as female organ archegonium as female and supermatogonium as male organ oogonium as female and sporogonium as male organ Reveal answer Fill a bubble to check yourself A Correct answer Explanation In red algae, male sex organ is spermatangium and female sex organs are carpogonium with trichogyne.