Animal having a coelom gives the advantage of: O a. It allows more efficient sense organs. O b. It allows organs to expand and contract. Oc. It allows the animal to be much larger. O d. It allows digestion to be much faster. e. It allows a variety of different organs.
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- Annelids have a ______. a. pseudocoelom b. a true coelom c. no coelom d. noneoftheaboveFigure 15.3 Which of the following statements is false? a. Eumetazoa have specialized tissues and Parazoa do not. b. Both acoelomates and pseudocoelomates have a body cavity. c. Chordates are more closely related to echinoderms than to rotifers according to the figure. d. Some animals have radial symmetry, and some animals have bilateral symmetry.Which of the following is not a member of the phylum Chordata? a. Cephalochordata b. Echinodermata c. Urochordata d. Vertebrata
- heck all the statements that can be attributed to the blastopore. A)it becomes the mouth in protostomes B)it can develop into the brain in some animals. C)it occurs in both protostomes and deuterostomes. D)it can develop into the gut in some animals. E)it is the opening to the archenteron F)it is the opening from the coelom to the outside of the animal. G)it becomes the mouth in deuterostomes H)it becomes the anus in deuterostomesYou read a research article presentsing new phylogenetic data demonstrating that species that contain a pseudocoelom are not closely related to one another. This suggests that: A. evolution of the pseudocoelom occurred more than once. B. the pseudocoelom evolved before the coelom. C. pseudocoelomates are more closely related to acoelomates than one another. D. pseudocoelomates are more closely related to coelomates than one another.A coelomate organism may have which of the following characteristics? a. Circulatory system b. Internal skeleton c. Larger size than a pseudocoelomate d. All of the choices are correct.
- Segmentation, first seen in annelids, allows evolutionary advantages bya. allowing more fluid movement for less energy expense.b. specialization of segments to carry out different functions.c. allowing coelom development.d. concentrating sensory and nervous tissues and organs in the direction of motion.Which word-part is not defined correctly? A. echino = radial B. pod = foot C. arthro = jointed D. phore = having/bearing E. cephalo = head 12Annelids have (a): a. pseudocoelom. b. true coelom. c. no coelom. d. none of the above
- What is the advantage to the segmentation that is exemplified in the Phylum Annelida? Check all that apply. A)The annelid may still survive if one segment is damaged. B)Segments can be specialized. C)The importance of segmentation is unclear. D)Vital structures are repeated in each segment. E)Locomotion is more efficient.a rabbit is a tetrapod. It has hair, a large brain, and acute vision and sense of smell. It nurses its young with milk produced in mammary glands and is endothermic. Rabbits use internal fertilization and give birth to live young. Which class of vertebrates do rabbits belong to? a. Amphibia b. Chondrichthyes c. Actinopterygii d. MammaliaHow does segmentation enhance annelid locomotion? a. Segmentation creates repeating body structures so the entire organism functions in synchrony. b. Segmentation allows specialization of different body regions. c. Neural segmentation allows annelids to localize sensations. d. Muscle contractions can be localized to specific regions of the body to coordinate movement.