WebStudy with Quizlet and memorize flashcards containing terms like D. Animals range from unspecialized single-celled to specialized multicellular forms. Animals are multicellular and most have cells that are specialized to form tissues and organs., E. Invertebrates lack a nervous system. Invertebrates such as sponges do lack nerve tissue, while others have … WebThe outer layer, the ectoderm, has cells that aid in capturing food and cells that secrete mucus. The inner layer, the endoderm, has cells that produce digestive enzymes and break up food particles. The jellylike material between the two layers is called the mesoglea.
Porifera Phylum - The Circulatory System
Webhave closed circulatory systems have tentacles surrounding a central mouth/anus are soft-bodied and often covered by a shell are filter feeders are soft-bodied and often covered by a shell A shared derived characteristic for members of the arthropod subgroup that includes spiders would be the presence of an open circulatory system. chelicerae. WebSponges, despite being simple organisms, regulate their different physiological processes through a variety of mechanisms. These processes regulate their metabolism, … campgrounds in florida with cabin rentals
Circulatory system Functions, Parts, & Facts Britannica
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