Q14 **Question:** Which is not true of both platyhelminths and xenacoelomorphs?**Options:**- ○ possess nephridia- ○ are triploblastic- ○ acoelomate- ○ hermaphroditic(Note: This question appears to be part of an educational assessment related to biology, specifically focusing on the anatomical and physiological characteristics of platyhelminths and xenacoelomorphs.)

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Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Invertebrates are creatures that lack a vertebral column (also known as a backbone or spine) due to the absence of the notochord. Apart from the class subphylum Vertebrata, this includes all animals. Arthropods (insects, crustaceans, arachnids, and myriapods), mollusks (chitons, snails, bivalves, squids, snails, bivalves, and octopuses), annelids (earthworms and leeches), and cnidarians are all examples of invertebrates (jellyfishes, sea anemones, hydras, and corals). Vertebrates are creatures with a backbone that runs through their entire body. Fish, amphibians, reptiles, birds, and mammals are the primary categories.

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