اقارن فيم تتشابه بيوض الحيوانات وفيم تختلف

اقارن فيم تتشابه بيوض الحيوانات وفيم تختلف علوم كتاب الطالب خامس ابتدائي الفصل الدراسي الاول

الحل

تضع الزواحف والأسماك والبرمائيات والطيور بيوضها الذي تنتج عنه صغار تنمو خارج أجسام الأمهات، أما الثدييات فتنتج بيوضاً وأجنة يكتمل نموها داخل أجسام الأمهات. لبيوض الأسماك والبرمائيات طبقة خارجية تشبه الهلام، بينما لبيوض الطيور والزواحف طبقة خارجية صلبة للحماية.

أخر المواضيع من قسم : اسألني

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اقارن فيم تتشابه بيوض الحيوانات وفيم تختلف

أخر المواضيع من قسم : اسألني