a new species of aquatic chordate is discovered

Why is it important to understand human sexuality issues?. Mammals and birds eat more often than reptiles. Jaws first occurred in which extant group of fishes? Tetrapods were no longer tied to the water for reproduction. D) respiration. A) chondrichthyans, osteichthyans, and reptiles, E) chondrichthyans, osteichthyans, and mammals. A) Like amphibians, they are tied to the water for reproduction. D) terrestrial, Which characteristic is common to all the modern representatives of all major reptilian lineages (turtles, lepidosaurs, crocodilians, and birds)? At least one of these has been found in all species of eumetazoan photosynthetic cells are surrounded by fungal hyphae. Which of these might have been observed in the common ancestor of chondrichthyans and osteichthyans? A) the shelled, amniotic egg C) components of the jaw A) jaws B) post-anal tail C) four-chambered heart D) vertebrae B Why do adult urochordates (tunicates) lack notochords, even though larval urochordates have them? Whiteflies are common pest insects found on cotton, tomato, poinsettia, and many other plants. would be the most feasible method of figuring out to which other Why do adult urochordates (tunicates) lack notochords, even though larval urochordates have them? B) They should be transitional forms with the fossils of Homo their _____. their fins have skeletal and muscular structures similar to amphibian limbs. o It allowed for increased surface area for breathing and eating. confirm the identity of sponges as basal animals. Unlike eutherians, both monotremes and marsupials _____. Kelly added that the herpetology instructor had said that in most snakes, the same condition exists. have some embryonic development outside the uterus. A) its lateral line system Are zebra fish bony or cartilaginous fish? earliest chordates in appearance? A) The development of more efficient surfaces for gas exchange in In addition to these, it will Which of the following is a characteristic of all chordates at some point during their life cycle? If the inner lining of the air sacs is neither thin nor highly vascularized, then what can be inferred about the air sacs? Suppose you traveled back in time and located the first animals to and Morwood et al. Which extant chordates are postulated to be most like the earliest Which "strategy" seems most likely for female bats to use to achieve the same goal? you find a new species of worm and want to classify it. The oldest known fossil chordate is Pikaia gracilens, a primitive cephalochordate dated to approximately 505 million years ago. E) All of these are essential for a completely terrestrial existence. There are two types of swim bladder: physostomous and physoclistous. Which of the following is most directly involved in the evolution of these variations in metamorphosis? by providing the embryos with some of the organic nutrients they have absorbed. In addition to these, it will probably have which of the following characteristics? C) Human evolution has occurred within an unbranched lineage. B) an armored, jawed placoderm with two pairs of appendages C) ray-finned fishes A) none, symmetry is not a basic characteristic o. Evolution and paleontology. Feathers initially evolved in a role A new species of aquatic chordate is discovered that closely resembles an ancient form. Closing spiracles would _____. Flashcards Learn Test Match Created by farihab2 Terms in this set (61) Which of the following is a characteristic of all chordates at some point during their life cycle? Experts are tested by Chegg as specialists in their subject area. The teacher was apparently unaware that these hydrozoans exhibit _____. which of the following animal groups is entirely aquatic? It has the following characteristics: external armor of bony plates, no paired lateral fins, and a suspension-feeding mode of nutrition. C) Hominins first evolved in and then radiated out from Asia. appendages evolved separately in protostomes and deuterostomes. D) presence of a digestive system with two openings, The organism was found to have two lungs, but the left lung was much smaller than the right lung. It has the following characteristics: Which of the following statements would be LEAST acceptable to most zoologists? The functional significance of porous septa in certain fungal hyphae is most similar to that represented by which pair of structures in animal cells and plant cells, respectively? animal would have trouble _____. attached organism has no external segmentation, no scales, a round We reviewed their content and use your feedback to keep the quality high. Which of the following is the most inclusive (most general) group in which all of the members have fully opposable thumbs? C) use its swim bladder as a respiratory organ A) flight The correct answer is B. Which would be the most feasible method of figuring out to which other hominin species H. floresiensis was most closely related? resists drying are characteristics of, The presence of a swim bladder allows the typical ray-finned fish to lancelets live only in saltwater environments. Homo floresiensis, on the Indonesian island of Flores. B) It was the first stage in the development of a bony skull. C) 9 Otx genes A) a mineralized, bony skeleton Which tissue type, or organ, is NOT correctly matched with its germ layer tissue? they are not efficient sites of gas exchange between air and blood. D) its gills, If a ray-finned fish is to both hover (remain stationary) in the water column and ventilate its gills effectively, then what other structure besides its swim bladder will it use? C) They should feature the earliest indications of the appearance of jaws. You also noticed It has the following characteristics: external armor of bony plates, no paired lateral fins, and a suspension-feeding mode of nutrition. A) a lampreys D) Compare the estimated life span of H. floresiensis to that of each of the other hominin species. What kind of scales do cartilaginous fish have? In a tabular form, compare the anatomical features of vertebrates. All other trademarks and copyrights are the property of their respective owners. B) presence of lungs Which structure of the amniotic egg most closely surrounds the embryo? attached to its flank is an equally long, snakelike organism. Explore the organs and systems of chordates and discover their four key characteristics including a notochord, dorsal neural tube, post-anal tail, and pharyngeal slits. A species found only in Australia resembles a species found only in North America. B) Human ancestors were virtually identical to extant chimpanzees. If coral animals are attacked by these sea stars, then what actually provides nutrition to the sea star, and which chemical (besides the toxin within their nematocysts) do the corals rely on for protection? A new species of aquatic chordate is discovered that closely resembles an ancient form. Against which hard structure do the circular and longitudinal muscles of annelids work? D) organize their nervous systems; adults nervous systems are fully developed and do not change. You also noticed that only males had feathers. Which of these characteristics added most to vertebrate success in relatively dry environments? |Character|Lancelet (Out-group}|Lamprey|Goldfish|Salamander|Turtle|Leopard|Chimp. point during their life cycle? reported in 2004 that they had found What class do cartilaginous fish belong to? What feature of this group most likely evolved simultaneously with the evolution of these toxins? Feathers initially evolved in a role associated with _____. A knowledgeable zoologist should predict that the adults of this species would also feature _____. In addition to these, it will probably have which of the following characteristics? It has the following characteristics: external armor of bony plates, no paired lateral fins, and a suspension-feeding mode of nutrition. and Morwood et al. What should be true of fossils of the earliest tetrapods? Is a sea urchin a vertebrate or invertebrate? Which of these traits is most strongly associated with the adoption of bipedalism? A) jaws adapted for feeding How did the evolution of the jaw contribute to diversification of early vertebrate lineages? B) It provided greater protection for the spinal cord. B) teeth You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Which of the following may have allowed her to make this distinction? If true, this would mean that _____. Which of the following statements about human evolution is correct? hominin species H. floresiensiswas most closely related? Our experts can answer your tough homework and study questions. Which structure is not an innovation that occurred during D) respiring and feeding, Chordate pharyngeal slits appear to have functioned first as _____. The embryo develops into a trochophore larva and eventually has a true coelom. associated with a wet or moist environment? Do bony and cartilaginous fish have bladders? B) Their fins have skeletal and muscular structures similar to amphibian limbs. A researcher took water in which a Jl population had been thriving, filtered the water to remove all bacterial cells, and then applied the water to the skins of adult amphibians to see if there would subsequently be a reduced infection rate by Bd when frog skins were inoculated with Bd. You have before you a living organism, which you examine carefully. Adult female mosquitoes must take blood meals for their eggs to develop, and it is while they take blood that they transmit malarial parasites to humans. A) 1 only B) 5 Dlx genes In addition to these, it will probably have which of the following characteristics? created 5 years ago by rileyrenner 2,080 views List View Show: All Cards 75 1 1) Which of the following is a characteristic of all chordates at some point during their life cycle? C) Monotremata. B) presence of four walking limbs Terry saved some of the tooth-like objects within the hagfishs round mouth to analyze their composition in his mentors biochemistry research lab. The nematocysts most likely reach the skin of sea slugs through branches of the _____. It is believed that the coelacanths and lungfish represent a crucial link between other fishes and tetrapods. How did members of the subphylum Urochordata and the phylum Chordata evolve into vertebrates? associated with a wet or moist environment? Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. What is the advantage of this to an organism that gets most of its nutrition through absorption? To reproduce, many plants produce seedsstructures containing embryonic offspring along with nutrients inside a tough case. The presence of a swim bladder allows the typical ray-finned fish to Why are bony fish and aquatic amphibians ammonotelic in nature? Terry catches a ray-finned fish from the ocean and notices that What phylum do cartilaginous fish belong to? C) The development of an amniotic egg and internal fertilization The attached organism has no external segmentation, no scales, a round mouth surrounded by a sucker, and two small eyes. contribute to head and neck in adults suspension feeding respiration reproduction. D) H. floresiensis and H. sapiens probably lived on Flores concurrently and interbred to some degree. A) lobe-fins Which structure of the amniotic egg most closely surrounds the embryo? Terry thinks it might be a marine leech, a hagfish, or a lamprey. What would be the closest descendent? earliest chordates in appearance? Two competing hypotheses to account for the increase in the number of Hox genes from the last common ancestor of bilaterians to the last common ancestor of insects and vertebrates are: (1) a single duplication of the entire four-gene cluster, followed by the loss of one gene, and (2) three independent duplications of individual Hox genes. Plasmogamy can directly result in which of the following? D) a notochord and a dorsal, hollow nerve cord, All chordates studied to date, except tunicates, share a set of _____. Which of the following statements concerning animal taxonomy is (are) true? The three subdivisions of chordates include vertebrates, cephalochordates, and urochordates. The location of this opening toward the bottom of the skull is significant in evolutionary biology for what reason? You find a multi-legged animal in your garden and want to determine if it is a centipede or a millipede. The bivalves started to die one by one; only the undamaged shells remained. Based on the idea that fungi have pores between their cell walls, which allow cytoplasm to move from one end of the mycelium to the other, which of the following hypotheses is the most plausible? What feeding tactic do these animals use? You can get your paper edited to read like this. In what respect do hominins differ from all other anthropoids? You found that these animals were tree-dwelling ectotherms, able to run quickly but unable to fly. In addition to these, it will probably have which of the following characteristics?A) legsB) no jawsC) an amniotic eggD) endothermy. C) amniotic egg What is an example of a cartilaginous fish? C) Newborns are much less dependent on their parents. It has the following characteristics: external armor of bony plates, no paired lateral fins, and a suspension-feeding mode of nutrition. other hominins. Which of the following, if observed, should help them arrive at a conclusive answer? Diffusion Let us complete them for you. Which hypothesis of feather evolution would these data most support? It has the following characteristics: external armor of bony plates, no paired lateral fins, and a suspension-feeding mode of nutrition. B) fishes no jaws D) are found in Australia and Africa. C) give birth to underdeveloped young, and subsequently carry them in a pouch that has teats And, did you know that the oceanic manta rays have the largest brain of all fish? What kind of aquatic ecosystem typically forms along coastlines? an amniotic egg claspers o lateral line system fingers and toes Planarians lack dedicated respiratory and circulatory systems because _____. might be a marine leech, a hagfish, or a lamprey. B) components of the jaw. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. Post any question and get expert help quickly. C) Humans evolved from chimpanzees. B) diapsids A) enhanced depth perception C) opposable big toe These results suggest instead that _____. 4. a result of having identical Hox genes Which of the following is consistent with this finding? H. floresiensis is estimated to have C) H. floresiensis and H. sapiens probably lived on Flores concurrently, and H. sapiens killed and consumed H. floresiensis. C) The mammalian jaw has fewer bones than does the reptilian jaw. C) four-chambered heart In addition to these, it will probably have which of the following characteristics? What is the major feature in these fish in support of this hypothesis? point during their life cycle? Which of the following best describes the physical relationship of the partners involved in lichens? B) feeding C) The extant lancelets are the immediate ancestors of the fishes. Which of the following statements about human evolution is correct? Upon inhalation, air first flows into posterior air sacs, then into the lungs, and then into anterior air sacs on the way to being exhaled. The teacher and class were especially saddened when the colonial hydrozoan died. 38) Terry takes the body of the snakelike organism and slices it open along its dorsal side. 4. osteichthyans You identify it as a(n): O a cartilaginous fish O a bony fish O a snake a jawless fish Question 36 1 pts You worked super hard in your biology classes and were rewarded with a research grant to look for fossils of the ancestors of . the anterior pharyngeal gill slits. Chordataphylum which includes animals with a notochord, pharyngeal slits, a post-anal tail, dorsal hollow nerve cord, and an endostyle or thyroid. C) birds This site is using cookies under cookie policy . remove small bites of flesh from sea slugs and have long-term memory. The water vascular system of echinoderms _____. Most members of which of the following groups are most closely Answer: B 10) A new species of aquatic chordate is discovered that closely resembles an ancient form. by modification of the skeletal rods that previously supported the B) no jaws It has the following characteristics: external armor of bony plates, no paired fins and a suspension feeding mode of nutrition. Brachiola must be harmful to male mosquitoes, but not to female mosquitoes. In chordates, four common features appear at some point during development: a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail. Chordate pharyngeal slits appear to have functioned first as _____. Which extant chordates are postulated to be most like the earliest chordates in appearance? of the amniotic egg? The ancestral version is the physostomous version, in which the swim bladder is connected to the esophagus via a short tube (see the figure above). Assume that all of the following are the same total length. It has the following characteristics: external armor of bony plates, no paired lateral fins, and a suspension-feeding mode of nutrition. There are three major groups of mammals, categorized on the basis of In examining an unknown animal species during its embryonic development, how can you be sure what you are looking at is a protostome and not a deuterostome? alongside handmade stone tools and the remains of dwarf elephants that probably have which of the following characteristics? 2003-2023 Chegg Inc. All rights reserved. The nematocysts of sea slugs should be most effective at protecting individual sea slugs from predation if the predators _____. The common ancestor of the protostomes had a coelom. The presence of four specific morphological traits. When a mycelium infiltrates an unexploited source of dead organic matter, what are most likely to appear within the food source soon thereafter? You'll get a detailed solution from a subject matter expert that helps you learn core concepts. C) bipedal posture The best evidence for not classifying the slime mold as a fungi comes from the slime molds: A) physical appearance B) nutritional modes C) choice of habitats D) reproductive methods E) DNA sequences. D) This change was necessary for the increase in size from prosimian forms to anthropoid forms. 3. jaws The presence of a lophophore in a newly discovered species would suggest that the species _____. If the size difference between the lungs in this organism is not a shared ancestral characteristic with its occurrence in snakes, then its existence in this organism is explained as which of the following? A) lizards D) feature the earliest indications of the appearance of jaws. Which of the following statements about vertebrates is true? mouth surrounded by a sucker, and two small eyes. In most vertebrates, the embryonic notochord . B) a mammal What do fungi and arthropods have in common? fungi secrete extracellular enzymes that can break down large molecules. An analysis of radiation reaching Earth from outer space suggests that water might have existed on distant planets. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. C) an . C) 3, 4, 1, 5, 2 this fungal group can break down the tough lignin, which cannot be harnessed for energy, to get to the more useful cellulose. Terry catches a ray-finned fish from the ocean and notices that attached to its flank is an equally long, snakelike organism. What are the characteristics of the phylum Chordata? Which of the following is NOT a diagnostic feature of the Chordata? attached to its flank is an equally long, snakelike organism. E) by modification of the skeletal rods that previously supported Suppose you traveled back in time and located the first animals to C) bones Animals having a flexible rod supporting their dorsal or rear sides belong to the phylum Chordata. B) Look for the mammalian characteristics of a four-chambered heart and a diaphragm. the radial symmetry of extant cnidarians is secondarily derived, rather than being an ancestral trait. Question Fossil fungi date back to the origin and early evolution of plants. A) They should indicate limited adaptation to life on land. Which of the following traits shared by mammals and birds best explains this habit? the pore (blastopore) formed during gastrulation becomes the anus. A coelom _____. C) craniates How are bony fish and cartilaginous fish similar? You can specify conditions of storing and accessing cookies in your browser. To which animal reproductive strategy is seed production most comparable? If it were discovered that crown-of-thorns sea stars do not make this toxin themselves, then the most likely alternative would be that this toxin is _____. a. evolved into lungs b. are a component of the lateral line system c. are required for fish to exchange gases with the surrounding water d. are present in both bony and cartilaginous fishes e. help bony fish maintain buoyancy, A typical sponge is best described as which of the following: A. a sessile suspension feeder with bilateral symmetry B. a slow-moving carnivore with no true tissues or symmetry C. a sessile suspension feeder with no true tissues or body symmetry D. a slow, A scientist discovers a putative new life form and notes that the creature's body is bilaterally symmetrical and consequently satisfies the criteria for defining life in which of the following categories? Listed below are four adaptations of terrestrial vertebrates. directly from dinosaurs? In addition to these, it will probably have which of the following characteristics? What is the major feature in these fish in support of this hypothesis? B) The upright posture and enlarged brain of humans evolved separately. Why is this concern misplaced? If in the future the current molecular evidence regarding animal origins is further substantiated, what will be true of any contrary evidence regarding the origin of animals derived from the fossil record? D) a well-developed notochord, A new species of aquatic chordate is discovered that closely resembles an ancient form. The one-way flow of air along parabronchi makes what type of gas exchange mechanism possible, at least theoretically? Is the phylum Chordata under the class Agnatha? The endostyle is embedded in the floor of the pharynx. True or false? What would be the most effective method of reducing the incidence of blood flukes in a human population?

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