Multiple choice The arrangement of leaves on the stem is termed _______ aestivation venation phyllotaxy placentation Reveal answer Fill a bubble to check yourself C Correct answer Explanation Phyllotaxy refers to the arrangement of leaves on the stem. Aestivation is the arrangement of petals/sepals in a bud, venation is the arrangement of veins in leaves, and placentation is ovule arrangement in the ovary.