their _____. If a tunicates pharyngeal gill slits were suddenly blocked, the animal would have trouble _____. Use the following figure and information to answer the question(s) below. If the teacher wanted to show the students what a lophophore is and how it works, the teacher would point out a feeding _____. 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). B) The upright posture and enlarged brain of humans evolved separately. PDF Name: Date: Period: Directions: Answer in complete sentences to receive The remains of H. floresiensis were found In addition to these, it will probably have which of the following characteristics? Do other cnidarians have this feature? Are cartilaginous fish ancestral to lobe-finned fish? B) insulation Arrange the following in order from largest to smallest. What are the characteristics of chordata? It has the following characteristics: external armor of bony plates, no paired lateral fins, and a suspension-feeding mode of nutrition. C) an amphibian Which If such seeds are deposited in a dark, moist environment, then which of the following represents the most likely means by which fungi might assist in seed germination, given what the seeds lack? They were little filtering organisms, with no mandible or jaws, and no paired fins. 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. C) anthropoids A new species of aquatic chordate is discovered that closely resembles an ancient form. Which of the following genetic processes may be most helpful in accounting for the Cambrian explosion? A new species of aquatic chordate is discovered that resembles an contributed to a hydrostatic skeleton, allowing greater range of motion. The larvae of some insects are merely small versions of the adult, whereas the larvae of other insects look completely different from adults, eat different foods, and may live in different habitats. The diagnostic feature of Chondrichthyes is _____. C) its liver C) Skates and rays exchange gases across their skin and thus require a high surface-area-to- volume ratio, while sharks use gills to respire. The evolution of animal species has been prolific (the estimates go into the millions and tens of millions). B) its lateral line system A knowledgeable zoologist should predict that the adults of this species would also feature _____. In most vertebrates, the embryonic notochord . 2. amphibians A) true coelom B) post-anal tail C) blastopore, which becomes the anus D) bilateral symmetry E) segmentation B Which of these are characteristics of all chordates during at least a portion of their development? C) ectothermy A) Modern humans are the only human species to have evolved on Earth. What kind of aquatic ecosystem typically forms along coastlines? Feathers initially evolved in a role What is the single unique characteristic that distinguishes extant The attached organism has no external segmentation, no scales, a round mouth surrounded by a sucker, and two small eyes. C) They should feature the earliest indications of the appearance of jaws. allowed vertebrates to reproduce away from water. C) H. floresiensis and H. sapiens probably lived on Flores concurrently, and H. sapiens killed and consumed H. floresiensis. A coelom _____. also inhabited the island, suggesting that H. floresiensis The one-way flow of air along parabronchi makes what type of gas exchange mechanism possible, at least theoretically? D) use its swim bladder as a respiratory organ. Brachiola should kill the mosquitoes before the malarial parasite they carry reaches maturity. 31) A new species of aquatic chordate is discovered that closely resembles an ancient form. CH31 Flashcards | Quizlet The location of this opening toward the bottom of the skull is significant in evolutionary biology for what reason? What do all craniates have that earlier chordates did not have? What will you be looking for? Smoos are strange animals with one of three shapes: round, cuboidal, or pyramidal. by providing the embryos with some of the organic nutrients they have absorbed. D) respiring and feeding, Chordate pharyngeal slits appear to have functioned first as _____. resists drying are characteristics of, The presence of a swim bladder allows the typical ray-finned fish to B) the ability to maintain a constant body temperature The remains of H. floresiensis were found alongside handmade stone tools and the remains of dwarf elephants that also inhabited the island, suggesting that H. floresiensis was able both to make tools and to coordinate the hunting of animals much larger than itself. they have a lateral line that is sensitive to vibrations. Cnidarians have fewer Hox genes than bilaterians. Question What would change in the development of protostom evolution if each body plan has a homogeneous character? B) H. floresiensis and H. sapiens probably lived on Flores concurrently but did not interact. Unlike eutherians, both monotremes and marsupials _____. 37) Which feature excludes the organism from possibly being a leech? C) the formation of structures from the neural crest 4. swim bladder You identify it as a(n): O a cartilaginous fish O a bony fish O a snake a jawless fish Which of the following is a characteristic of all chordates at some point during their life cycle? The upright posture and enlarged brain of humans evolved separately. Which of the following best describes the physical relationship of the partners involved in lichens? Unlike eutherians, both monotremes and marsupials _____. BIO 112 Final Exam MC Practice Test - Studocu What advantage does this group of fungi have over other fungi because of this capability? What do all cartilaginous fish have in common? C) induce tissue differentiation; in adults, tissue is already differentiated. Which structure of the amniotic egg most closely surrounds the embryo? They undergo incomplete metamorphosis into winged adults. 4 anthropoids And, did you know that the oceanic manta rays have the largest brain of all fish? D) an endoskeleton of calcified cartilage, Arrange these taxonomic terms from most inclusive (most general) to A) shared ancestry On the basis of these observations, some have proposed that the ancestral cnidarians were originally bilateral and, in stages, lost Hox genes from their genomes. 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. From earliest to most recent, in what sequence did these events evolve? earliest chordates in appearance? D) Lancelets display the same method of swimming as do fishes. How are bony fish different from cartilaginous fish? A) amphibians A consequence of this occurrence is that _____. Which of these traits is most strongly associated with the adoption of bipedalism? D) feed multiple embryos internally using placentas, Unlike eutherians, both monotremes and marsupials _____. What do fungi and arthropods have in common? Which of the following are the only extant animals that descended In addition to these, it will probably have which of the following characteristics? Asexual reproduction in yeasts occurs by budding. Are members of the phylum Chordata carnivores? Which characteristic distinguishes echinoderms from the other two reported in 2004 that they had found skeletal remains of a previously unknown type of hominin, now dubbed Homo floresiensis, on the Indonesian island of Flores. might be a marine leech, a hagfish, or a lamprey. A) The development of more efficient surfaces for gas exchange in The sharp, inch-long thorns of the crown-of-thorns sea star are its spines. What anatomical change made depth perception possible? lichens are not purely mutualistic relationships. B) It was the first stage in the development of a bony skull. Both animals and fungi are heterotrophic. A) effectively circulate its blood The presence of which of the following structures would allow for the most certain identification of the organism? Which of the following is NOT a diagnostic feature of the Chordata? Chordates- Chapter 34 Flashcards - Easy Notecards O A fossil of an extinct species of mammal is found to have morphological characteristics that are similar to those of a living nocturnal mammal. C) birds o It allowed for increased surface area for breathing and eating. chordates in appearance? There are two types of swim bladder: physostomous and physoclistous. 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? directly from dinosaurs? If true, this would mean that _____. D) not sink, Which shark structure is closest in function to a swim bladder full of gas? Terry will find that they are composed of the same protein found in tetrapod _____. It has the following characteristics: A) birds, such as geese, which migrate great distances, B) birds that chip away wood, such as woodpeckers, D) birds that rip apart prey, such as hawks and eagles. Which of these, if true, would support the claim that the ancestral cnidarians had bilateral symmetry? 2003-2023 Chegg Inc. All rights reserved. A new species of aquatic chordate is discovered that closely resembles an ancient form. Chordate - Evolution and classification | Britannica In addition to these, it will probably have which of the following characteristics? C) four-chambered heart While sampling marine plankton in a lab, a student encounters large numbers of fertilized eggs. What would you surmise from these data? What would be the closest descendent? True or false? B) no jaws. Arrange the following in order from largest to smallest, assuming that they all come from the same fungus. Which of these might have been observed in the common ancestor of chondrichthyans and osteichthyans? attached to its flank is an equally long, snakelike organism. In a tide pool, a student encounters an organism with a hard outer covering that contains much calcium carbonate, an open circulatory system, and gills. A) Sharks are more closely related to the tubelike lampreys than skates and rays are. Is a sea urchin a vertebrate or invertebrate? In a tabular form, compare the anatomical features of vertebrates. Suppose a researcher for a pest-control company developed a chemical that inhibited the development of an embryonic mosquitos endodermal cells. The development of an amniotic egg and internal fertilization allowed You found that these animals were tree-dwelling ectotherms, able to run quickly but unable to fly. that only males had feathers. D) the amniotic egg, Fossils of the earliest tetrapods should _____. Chapter 34: Chordates Flashcards - Easy Notecards A) lampreys It has the following characteristics: external armor of bony plates, no paired lateral fins, and a suspension-feeding mode of nutrition. The table above is a comparison of several characteristics of H. floresiensis to those of nine other hominin species (arranged roughly from oldest to most recent). D) gill slits for respiration. Click the card to flip no jaws Feel free to get in touch with us via email. 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? B) Look for the mammalian characteristics of a four-chambered heart and a diaphragm. B) components of the jaw. Question 29 1 pts What was most likely the original function of the pharyngeal slits in the earliest chordates? What was an early selective advantage of a coelom in animals? vertebrate diversification? An 8th grade Earth Science class sparked Iannas interest in science. D) Tetrapods were no longer tied to the water for reproduction. Which of the following characteristics would support your hypothesis that the animal is a sea star and not another type of echinoderm? associated with _____. Chordates: The Voyage to Us Bones, Brawn, and Brains, Gail Grabowsky Kaaialii, Marine Biologist. C) an . B) Lancelets do not have segmental muscles. Their feeding strategy is predatory and involves adhesives or mucus on their tentacles or other body parts. D) These bones can be observed to move from the evolving jaw to the evolving middle ear in mammalian embryos. Animals are thought to have evolved from flagellated protists similar to modern. A) limit litters to a single embryo When assessing a client with partial-thickness burns over 60% of the body, which finding should the nurse report immediately? 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. B) Humans represent the pinnacle of evolution and have escaped from being affected by natural selection. Coelomateany animal which has a coelom, a body cavity which contains and allows movement of internal . CH 34 Flashcards - Easy Notecards C) bipedal posture Chordates are animals of the Chordata phylum that share similar characteristics. You also noticed that only males had feathers. What are the main characteristics of cartilaginous fish? It has the following characteristics: external armor of bony plates, no paired lateral fins, and a suspension-feeding mode of nutrition. Chordate pharyngeal slits appear to have functioned first as. Which "strategy" seems most likely for female bats to use to achieve the same goal? animal would have trouble _____. their _____. The presence of a swim bladder allows the typical ray-finned fish to As you are walking along a beach, you find an animal and believe that it belongs to the class Asteroidea. Basidiomycetes are the only fungal group capable of synthesizing lignin peroxidase. Based on these characteristics, it is likely that this species will also have no jaws, as ancient aquatic chordates, such as the jawless fish known as Agnathans, lacked jaws and had similar features. B) post-anal tail skeletal remains of a previously unknown type of hominin, now dubbed We reviewed their content and use your feedback to keep the quality high. What distinctive adaptations appeared in early Mollusca? What type of feeders dominate the deep sea benthos? return to water at any stage of the life cycle? What are some animal adaptations for living in the ocean? C) bones A) Look for the presence of milk-producing glands. On the back of your skull you can feel a small bump, below which is an opening where the spinal cord enters the skull. Also suppose H. floresiensis were found to differ from the average Indonesian H. sapiens in 28 base pairs, from the average North African H. sapiens in 51 base pairs, and from the average North American H. sapiens in 53 base pairs, while two randomly selected H. sapiens differed from each other in an average of 21 base pairs. The multicellular condition of animals and fungi seems to have arisen _____. reptiles stimulated expansion into terrestrial habitats. compare rates of predation on whitefly nymphs coated with a nontoxic dye vs. undyed whitefly nymphs, 1) undergo complete metamorphose2) have jointed appendages3) molt4) have segmented bodies5) have an exoskeleton or cuticle. gnathostomes4. Instead, gas enters and leaves the swim bladder via special circulatory mechanisms within the wall of the swim bladder. division of these two groups occurred after the protostome developmental sequence appeared. lancelets live only in saltwater environments. Terry thinks it might be a marine leech, a hagfish, or a lamprey. Arthropod exoskeletons and mollusk shells both _____. would be the most feasible method of figuring out to which other Animals having a flexible rod supporting their dorsal or rear sides belong to the phylum Chordata. 2. an example of homologous structures A) a rasping tongue B) It provided greater protection for the spinal cord. resembles an ancient form. The presence of a swim bladder allows the typical ray-finned fish to stop swimming and still _____. 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. A) The first fossils resembling lancelets appeared in the fossil record around 530 million years ago. It has been hypothesized that fungi and plants have a mutualistic relationship because plants make sugars available for the fungis use. A) legs B) no jaws C) an amniotic egg B) a high degree of cephalization B) refrain from flying throughout pregnancy (about six weeks long) Do members of the phylum Chordata filter feed? C) Monotremata. 24) A new species of aquatic chordate is discovered that closely resembles an ancient form. B) convergent evolution Which structure is not an innovation that occurred during In what ways do seafloor abyssal marine organisms get their food? A new species of aquatic chordate is discovered that closely resembles an ancient form. C) It made additional food sources available. Iridium, which is common in meteorites but rare on Earth, is found in sedimentary rock that contains the last appearance of many species in the fossil record. 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. A) the chorion Transcribed image text: Question 35 1 pts You are part of a research team that discovers a new species of aquatic chordate. In addition to these, it will probably have which of the following characteristics? an amniotic egg claspers o. Which of the following statements about deuterostomes is false? Which of the following may have allowed her to make this distinction? Which of the following traits shared by mammals and birds best explains this habit? An operculum covers which body part of a bony fish? might be a marine leech, a hagfish, or a lamprey. How do fish fit into the chordate cladogram? Small, fishlike marine invertebrates, they probably are the closest living relatives of the vertebrates. C) Lancelets live only in saltwater environments. D) chondrichthyans, Vertebrates and tunicates share _____. A) Compare the type of prey hunted by H. floresiensis to that hunted by each of the other hominin species. Protostomes invade terrestrial environments. following traits shared by mammals and birds best explains this habit? This E-mail is already registered with us. Do members of the phylum Chordata have embryonic pharyngeal gill pouches? Why is it important to understand human sexuality issues?. B) eyes on the front of the face 1. apes Which of the following is the most inclusive (most general) group in which all of the members have fully opposable thumbs? 39) Which type of bird is most likely to benefit from air sacs which reduce its weight? D) diurnal activity, What group of mammals have (a) embryos that spend more time feeding through the placenta than the mothers nipples, (b) young that feed on milk, and (c) a prolonged period of maternal care after leaving the placenta? the body cavity evolved before the lophophore. In most fungi, karyogamy does not immediately follow plasmogamy, which consequently______. B) Compare the average body size of H. floresiensis to that of each of the other hominin species. Jaws first occurred in which extant group of fishes? 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? D) a well-developed notochord, A new species of aquatic chordate is discovered that closely resembles an ancient form. exhibits spiral cleavage or radial cleavage. Changes in the homeobox genes governing early development. it should produce fewer fermentation products per unit time. In arthropods, locomotion is accomplished by muscles that work against: a. each other. The one-way flow of air along parabronchi makes what type of gas exchange mechanism possible, at least theoretically? A terrestrial animal species is discovered with the following larval characteristics: exoskeleton, system of tubes for gas exchange, and modified segmentation. Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Tetrapods were no longer tied to the water for reproduction. 32) Which group's members have both lungs and gills during their adult lives? Does this mean they are more like fish-shaped mammals? It has fins in pairs, scales, and gills. Which extant chordates are postulated to be most like - Course Hero The name of the phylum comes from the Greek word chord, which means string. Which hypothesis of feather evolution A) none, symmetry is not a basic characteristic o. If a tunicate's pharyngeal gill slits were suddenly blocked, the What are some characteristics of cartilaginous fish? B) ovoviviparous reproduction C) the allantois Diffusion Let us complete them for you. hominin species H. floresiensiswas most closely related? Are bats quadrupeds? While on an intersession course in tropical ecology, Kris pulls a large, snakelike organism from a burrow (the class was granted a collecting permit). a slow-moving or sessile lifestyle in the adult. It has fins in pairs, scales, and gills. D) a salamander that had legs supported by a bony skeleton but moved with the side-to-side bending typical of fishes, A trend first observed in the evolution of the earliest tetrapods was _____. It has the following characteristics: external armor of bony plates, no paired lateral fins, and a suspension-feeding mode of nutrition. Which of the following is most likely to be aquatic? D) 7 FOXP2 genes, Which of the following characteristics is shared by a hagfish and a lamprey? All other trademarks and copyrights are the property of their respective owners. Which of the following organisms would you expect to have the largest surface-area-to-volume ratio? See whether the embryo _____. D) They cannot effectively moisturize the air before it reaches the lungs. Cephalochordate | Natural History, Features & Evolution It has fins in pairs, scales, and gills. D) This change was necessary for the increase in size from prosimian forms to anthropoid forms. Which extant chordate group is postulated to be most - Course Hero stop swimming and still _____. Jaws first occurred in which extant group of fishes? It has the follow- ing characteristics: external armor of bony plates, no paired lateral fins, and a suspension-feeding mode of nutrition. Chordate pharyngeal slits appear to have functioned first as _____. Which of the following characteristics evolved independently in mammals and birds? A) respiring C) two pairs of appendages What group of cartilaginous fish includes skates and sawfish? Terry catches a ray-finned fish from the ocean and notices that attached to its flank is an equally long, snakelike organism. If two pyramidal smoos mate, they always produce pyramidal offspring. B) have some embryonic development outside the uterus With which of the following statements would a biologist be most inclined to agree?A) Humans and other apes represent divergent lines of evolution from a common ancestor.B) Humans represent the pinnacle of evolution and have escaped from being affected by natural selection.C) Humans evolved from chimpanzees.D) Humans and other apes are the result of disruptive selection in a species of chimpanzee. Kindly login to access the content at no cost. Healthy corals are brightly colored because they____. 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? Question : 31) A new species of aquatic chordate discovered that D) presence of a notochord, Which of these are amniotes? Consequently, which two organisms would have been among the first to starve to death (assuming they lack photosynthetic endosymbionts)? Did the first members of the phylum Chordata have arms or fins? Fossil evidence indicates that the following events occurred in what sequence, from earliest to most recent? Terry thinks it might be a marine leech, a hagfish, or a lamprey. Were in awe of the charismatic marine megafauna Mobula.