中胚层中的脊索（notochord）在神经系统发育过程中起重要作用
中胚层中的脊索（notochord）在神经系统发育过程中起重要作用
中胚层中的脊索（notochord）在神经系统发育过程中起重要作用 A: 正确 B: 错误
中胚层中的脊索（notochord）在神经系统发育过程中起重要作用 A: 正确 B: 错误
Which one is related to mesoderm formation A: the occurance of the primitive streak B: theoccurance of notochord C: a part of the cells migrate from the epiblast D: a part of the cells migrate from the hypoblast
Which one is related to mesoderm formation A: the occurance of the primitive streak B: theoccurance of notochord C: a part of the cells migrate from the epiblast D: a part of the cells migrate from the hypoblast
Which of the following is derived from the ecotoderm? A: epidermis, lenses of eyes, and nervous system B: notochord, skeleton, and skin C: liver, thyroid, and muscles D: blood, respiratory system, and skeleton
Which of the following is derived from the ecotoderm? A: epidermis, lenses of eyes, and nervous system B: notochord, skeleton, and skin C: liver, thyroid, and muscles D: blood, respiratory system, and skeleton
无脊椎的脊索动物具有的典型生物特征包括 A: 脊索(Notochord) B: 鳃裂(Pharyngeal slits) C: 神经索(Nerve cord) D: 后尾(Post-anal tail)
无脊椎的脊索动物具有的典型生物特征包括 A: 脊索(Notochord) B: 鳃裂(Pharyngeal slits) C: 神经索(Nerve cord) D: 后尾(Post-anal tail)
【动】对于Notochord描述错误的是(<br/>)。 A: 将发育成脊索 B: 将发育成脊椎 C: 是由primitive<br/>streak形成 D: 由外胚层细胞形成
【动】对于Notochord描述错误的是(<br/>)。 A: 将发育成脊索 B: 将发育成脊椎 C: 是由primitive<br/>streak形成 D: 由外胚层细胞形成
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