桃果实中木质化的硬壳是由___发育的 (The lignified hard shell of the peach fruit is developed from __) A: 外种皮 (Testa) B: 内果皮 (Endocarp) C: 中果皮 (Mesocarp) D: 种皮 (Seed coat)
桃果实中木质化的硬壳是由___发育的 (The lignified hard shell of the peach fruit is developed from __) A: 外种皮 (Testa) B: 内果皮 (Endocarp) C: 中果皮 (Mesocarp) D: 种皮 (Seed coat)
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