Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 24, Problem 8SQ
Summary Introduction
Concept introduction: Invertebrates are animals that lack notochord. Invertebrates include variety of organisms with varied characteristics. The invertebrates are more in number than the vertebrates.
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Which invertebrate phylum includes the most species?a. mollusks c. arthropodsb. roundworms d. flatworms
Which group of flatworms are primarily ectoparasites of fish? a. monogeneans b. trematodes c. cestodes d. turbellarians
What characteristic is common to the flatworms, molluscs, and annelids?
a. All have bilateral symmetry. b. All are acoelomates.
c. All are parazoans.d. All are vertebrates.
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Biology: The Unity and Diversity of Life (MindTap Course List)
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- In the flatworm, flame cells are involved in what metabolic process? a. Reproduction b. Digestion c. Locomotion d. Osmoregulationarrow_forwardA ciliated epidermis persists in the mature form of a flatworm belonging to which class? a. Turbellaria b. Monogenea c. Trematoda d. Cestodaarrow_forwardWhich group of echinoderms usually posses pentameric antimeres but some species may have more? A. Asteroidea B. Echinoidea C. Holothuroidea D. Crinoidsarrow_forward
- Pretend you see an animal at the ocean under a rock. It's 4 cm long. At first you think it might be a centipede but it's soft-skinned and the leg like things are not jointed, they are also very soft. What is it most likely to be? A. polychaete annelid B. hemichordate C. sea cucumber D. hexapod 11arrow_forwardWhich is the only one example ofMollusca Phylum?A. Locust B. ButterflyC. Scorpion D. Octopusarrow_forwardFlatworms can reach a maximum size of around 40cm. Whilst this is big for a worm, there are certainly larger animals on earth. What might it be that restricts the flatworms body size? A. They have an exoskeleton that restricts their growth. B. They do not have a circulatory system. C. They are exothermic animals that have limited energy for growth. D. They are acoelomates and so the growth of their internal organs is restricted by growth of the outer body wall.arrow_forward
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