noun🔗Share珠心 The tissue which surrounds and protects the embryo and lies inside of the integuments."The scientist carefully dissected the ovule to examine the nucellus, the protective tissue surrounding the developing plant embryo. "科学家小心地解剖了胚珠，以检查珠心，这个保护着正在发育的植物胚胎的组织。biologyplantseedanatomypartstructureChat with AIVocabulary GamePractice Reading
