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14．双受精是被子植物所特有的双受精是指 A．一个卵细胞和两个精子相融合b．两个精子分别与卵细胞和极核相融合c．一个精子和两个极核相融合 Template






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sketch 3367 Ichigo by Szymon Broszczak
sketch 3999 Deadmau by Speeð Üp Säm
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sketch 1034 what ever you want it to be
sketch 5437 Mikasa from Attack on Titan by Manimarmuthu Muthu
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sketch 4659 Ozzy Osbourne by Piter Olimpo





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tomski14．双受精是被子植物所特有的双受精是指 a．一个卵细胞和两个精子相融合b．两个精子分别与卵细胞和极核相融合c．一个精子和两个极核相融合 coloring
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