Animals are classified based on the presence or absence of ____. Animals with backbone are called ____ while animals that do not have backbone are called ____. Invertebrates like sponges have ____ or tiny openings found on their bodies. They have exoskeleton called ____ which provide support. Worms are also invertebrates. They can be divided into three groups namely ____, ____, and ____.

NERVOUS SYSTEM

بواسطة
طباعة
تضمين

لوحة الصدارة

النمط البصري

الخيارات

تبديل القالب

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