Multiple choice Which of the following are diploid structures? Nucellus Integuments Endosperm Megasporocyte Megaspore 1 and 3 1, 2 and 4 2 and 3 2, 3 and 4 3, 4 and 5 Reveal answer Fill a bubble to check yourself B Correct answer Explanation Correct answer. Nucellus, Integuments and Megasporocyte: All are diploid structures.