Concept explainers
To review:
The largest and fewest number of species among the taxonomic groups Amniota, Gnathostomata, and Tetrapoda.
Introduction:
Amniotes are known to lay eggs on land because an egg has a protective membrane, which protects the fetus from the external surroundings. Amniote includes almost all the animals that are terrestrial including reptiles, birds, and mammals. Amniotes evolved themselves to provide a wet condition in order to provide nourishment and development of the fetus inside.
Gnathostomata is the group of vertebrates, which has jaws and appendages that are paired. Hard skull and calcified bones are a few of the distinctive features of Gnathostomata. Tetrapods, as the name suggests, are the vertebrates that possess four limbs. Mammals and reptiles, including birds, comprise a major part of the tetrapods.
Want to see the full answer?
Check out a sample textbook solutionChapter 32 Solutions
Biology: The Dynamic Science (MindTap Course List)
- What are examples of the following groups of vertebrates: Chondrichthyes, Actinopterygii, Actinistia, Dipnoi, and Tetrapoda? How many species are in each of the above groups? Which one has the most species? When did the first vertebrates appear, and when did they first live on land? Where do we find the earliest fossils of vertebrates, and where do we find the earliest fossils of terrestrial (land-living) vertebrates? What are the following and how are they related to humans: Pongo, Gorilla, Pan, Sahelanthropus, Ardipithecus, Australopithecus, Homo erectus, and Homo neanderthalensis? Which of these is our closest living relative? What are some of the traits that these organisms share with us? When and where did each of the extinct forms above live? What does this tell us about when our lineage split from the most recent ancestor we share with our closest living relative?arrow_forwardWhich of the following taxa includes myriapods that are wingless terrestrial mandibulate arthropods that are carnivorous and possess one pair of legs per body segment? Subclass Apterygota Class Diplopoda Class Chilopoda Subphylum Cheicerata Order Scorpionesarrow_forwardRotifers and acanthocephalans previously belonged to separate phylum. But recent molecular studies and genome analysis show that acanthocephalans are sister groups of a class under Phylum Rotifera. And thus, the two should belong to a single taxon. Aside from the molecular evidences, what morphological and physiological features of both the rotifers and acanthocephalans support this claim? Explain your answer.arrow_forward
- What factors support the placement of phoronids and brachiopods as sister taxa?arrow_forwardWhat are the criteria that delimit phylum Echinodermata to its classes? What are the functions of the tube feet, madreporite, and ambulacral groove? Give the economic importance of echinoderms. What is regeneration?arrow_forwardThe taxon Teleostomi is defined as the group which includes all the descendants of the common ancestor of ray-finned fishes and birds (Aves). How many branches on this tree would have their organisms included in Teleostomi? Pisces Osteichthyes (bony fishes) Sarcopterygii (lobe-finned fishes) Cyclostomata FAgnatha) Tetrapoda Amniota Reptilia 0 6 07 8. 0 9 ochemistr..docx W Electrochemistr....docx DropboxInstalle..dmg Mixini (hagfishes) Petromizontida (lampreys) Chondrichthyes (cartilaginous fishes) Actinopterygii (ray-finned fishes) Actinistia (coelacanths) Dipnoi dungfishes) Amphibia Mammalia Non-avian reptiles Avesarrow_forward
- Which of the taxa shown below is not monophyletic? Pisces Osteichthyes (bony fishes) Sarcopterygii (lobe-finned fishes) Cyclostomata EAgnatha) Tetrapoda Amniota Reptilia O Reptilia O Amniota O Tetrapoda Osteichthyes Mixini (hagfishes) Petromizontida (lampreys) Chondrichthyes (cartilaginous fishes) Actinopterygii (ray-finned fishes) Actinistia (coelacanths) Dipnoi (lungfishes) Amphibia Mammalia Non-avian reptiles Avesarrow_forwardseveral tetrapod lineages dont have legs. a) name 3 lineages of legless tetrapods b) why do we refer to these lineages as tetropodsarrow_forwardWhen comparing Gastropoda with bivalvia, is the relationship monophyletic, polyphyletic, or paraphyletic?arrow_forward
- What are the internal and external structures together with its function of Aplacophora, Monoplacophora, Polyplacophora, Bivalvia, Gastropoda, Cephalopoda, Scaphopoda?arrow_forwardWhat are the unifying characteristics of Sardinella tawilis under the following taxonomic ranks: Kingdom - Animalia — Phylum - Chordata —arrow_forwardWhich of the following are tetrapods? Group of answer choices A, B, C, and D B, C, D, and E D) mammals E) birds C) reptiles B) amphibians B, C, and D A) fisharrow_forward
- Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSONBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxAnatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
- Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & CompanyLaboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education