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?

Q: What characteristics shared by the three deuterostome phyla indicate a monophyletic group of…

A: Animals are multicellular eukaryotic organisms that form the biological kingdom Animalia. Animals…

Q: (6a) Please draw a phylogeny that shows relationships between the following groups: Haikouicthys…

A: Phylogeny is a mechanism to identify the relationship or arrangement of organisms according to their…

Q: How are the Protochordates the link between the invertebrates and the vertebrates? Discuss its…

A: Given: The Protochordates the link between the invertebrates and the vertebrates.

Q: Organisms with a notochord that extends the entire length of the body [ Choose ] throughout its life…

A: Animal kingdom includes- eukaryotes having multicellular structure.

Q: What makes Archeopteryx an important fossil evolutionarily?     This species has a mix of…

A: As We know that Fossils are the preserved remains or traces of organisms from the distant parts and…

Q: One difference between the 'fishapod', Tikaalik, and the early tetrapod, Acanthostega, is... Group…

A: Tetrapod development began approximately 400 million years ago in the Devonian Period, with the…

Q: What environmental factors might have led to the evolution of the tetrapod limb?     An ice age…

A: Evolution in biology can be mostly simply described as descent with modifications, which comprises…

Q: Tiktaalik and Protarchaeopteryx are examples of transitional forms. In paleontology, what does…

A: Paleontology, usually spelled palaeontology or palaeontology, is the scientific study of life…

Q: Placentals Marsupials Monotremes Mammals AMNIOTA Birds Crocodiles Lizards + Snakes TETRAPODA Tuatara…

A: Agnathans are different class from Gnathostomata. So it is placed as a different node in the table…

Q: Why are the lung fish considered to have a common ancestor with amphibians

A: Rhipidistian freshwater fish belonging to the Dipnoi subclass are lungfish. Lungfish are best…

Q: Which of the following list places the important evolutionary innovations in the correct order of…

A: A phylogeny example is the evolutionary tree of organism demonstrating the history of animal organs.…

Q: What is the difference and similarities of the following 1. Monotremes vs. birds 2. Eutherians vs…

A: Charles Darwin is the father of Evolution. Evolution means it the change in characteristics of an…

Q: Which of the following are tetrapods? Group of answer choices A, B, C, and D B, C, D, and E D)…

A: Taxonomy identifies and classifies the organism to their group. Phylogenetic data can be helpful for…

Q: What are the general reasons of animals' existence in each era: Cenozoic, Mesozoic, and Paleozoic?

A: Geological time scale: It is a time period used to measure the time or age of the earth by seeing…

Q: In the rainforest you discover a new species that is terrestrial, has determinate development, molts…

A: Introduction  Morphology is the study of physical characters which can be visualized either by naked…

Q: The taxon Teleostomi is defined as the group which includes all the descendants of the common…

A: Phylogenetic tree represents the evolutionary relationship between the taxons present in the tree.

Q: How does the limb orientation of "advanced" tetrapods differ from that of "primitive" tetrapods? How…

A: Tetrapods are four-footed animals that belong to a group that comprises all vertebrates above the…

Q: The following image is from a scientific publication by paleontologist Niel Shubin, who was part of…

A: Homologous structures such as organs or bones are the structures which posses similar anatomical…

Q: Through the phylogenetic tree of major groups of vertebrates provided below, answer the given table…

A: Cladograms(phylogenetic trees) are graphical charts that depict the hypothetical correlations…

Q: Draw a cladogram for the animals: Amphioxus; Lamprey; an osteostracan( derived ostracoderm); Reef…

A: phylum chordata has dorsal nerve cord, notocord, pharyngeal gill silts, anal tail

Q: Which statement best describes the symmetry of brachiopods compared to bivalves?     Both…

A: Brachiopods are organisms belonging to Phylum Brachiopoda and  bivalves belong to Phylum Mollusca,…

Q: In which ways does the limb orientation of "advanced" tetrapods differ from that of "primitive"…

A: Manus is a term used for hands or and forelimbs.

Q: 30. Class Aves evolved from Jurassic dinosaurs belonging to which of the following chordate groups?…

A: The birds or the aves were cosidered to be evolved fromthe jurassic dinosaurs of clade Therapoda.…

Q: Can fossils bridge the evolutionary gap between fish and tetrapod vertebrates?

A: Phylogeny is the branch of biology that studies phylogenetic analysis. A phylogenetic analysis is…

Q: In which ways does the limb orientation of "advanced" tetrapods differ from that of  "primitive"…

A: Tetrapods are the four limbed structure.And these limbs have derived from fins.The limbs of all…

Q: Animal phylogenies based on molecular and

A: 1) Phylogenetic trees basically reconstructed from different genes in the same organism. However it…

Q: Osteostracans are not included in the Gnathostome clade because

A: Why are the Osteostracans not included in the Gnathostome clade?  Ans : They lack true bone…

Q: What is the closest common ancestor of the Allosaurus and Aves? A. Maniraptora B. Theropoda C.…

A: The cladogram presented here consists of four major clades which are Dinosauria, Saurischia,…

Q: Which of the following structures are homologous in arthropods? 1st leg of horseshoe crab: 1st…

A: The arm of a human, the wing of a bird or a bat the leg of a dog and the flipper of a dolphin or…

Q: Transitional Fossils: Which of the following statements is/are false regarding the limbs of…

A: As per our policy, we are answering the first question only. Kindly repost for other questions.…

Q: Styles raph Lungfishes Amphibians Mammals Tetrapod limbs Lizards and snakes Amnion Crocodiles…

A: A tree like or comb like taxonomic relationship among different group of organisms is called…

Q: the common ancestor of Cnidarians were an open-ocean jelly fish, what would you infer regarding the…

A: Cnidarians is a phylum which comes under the main classification animilia  They are aquatic animals…

Q: Ornithopods and ceratopsians are characterized by numerous instances of convergence. Which of the…

A: Ornithopods are small, bipedal, running dinosaurs that are herbivorous animals. These dinosaurs have…

Q: Make

A: The life on the earth comprises of different kinds of organisms having different physical and…

Q: Which of the following could be considered the most recentcommon ancestor of living tetrapods?(A) a…

A: The term “tetrapods” means “four feet”. The tetrapods are the animals that belong to the superclass…

Q: Which ones are synapomorphies of the chordates and which ones are symplesiomorphies based on this…

A:

Q: A) Draw a phylogenetic tree for the major phyla of the animal kingdom. Label the appropriate branch…

A: Phylogenetic tree is a diagram that shows the pattern of evolution of a group of organism based on…

Q: Why are “reptiles,” as traditionally defined, a paraphyletic group? How has cladistic taxonomy…

A: Reptiles are the cold-blooded animals that are characterized by dry scaly and impermeable skin. They…

Q: How do we come to understand the place of vertebrates in a broader tree that includes all animals?

A: The relationship between different organisms based on their evolutionary descent is depicted through…

Q: Amphioxus long has been of interest to zoologists searching for a vertebrate ancestor. Explain why…

A: Amphioxus, also called lancelets, are the marine invertebrate chordates.

Q: How is it that most, if not all, of the extant animal phyla today evolved during the Cambrian period…

A: To date, there has been no other evolutionary explosion as strong as the Cambrian period in the…

Q: Several groups of vertebrates, such as seals, ancient extinct plesiosaurs (swimming ocean reptiles)…

A: Tetrapods are the four-legged organisms belonging to the Tetrapoda superclass of the animal kingdom.…

Q: What types of molecular and morphological changes occurred along the different branches that led to…

A: Answer: Introduction: Tetrapods (means four limbs) evolved from a group of animals called as the…

Q: Make a cladogram that includes the following groups of fishes: chon-drosteans, elasmobranchs,…

A: The cladogram is a diagrammatic relationship between species. But it didn’t represent an…

Q: What does the image say about the bones in the fins of fish (on the left side) when compared to the…

A: Tetrapods evolved from a finned organism that lived in the water.  The common ancestor of all those…

Q: How did the characteristic differences between aquatic and terres-trial environments influence the…

A: The basic differences that animal are required to accommodate while moving from water to land are…

Q: How could morphological data alone lead biologists to group animals into erroneous evolutionary…

A: The evolutionary relationship between the different organisms is shown by the phylogenetic tree. How…

Q: How are the Protochordates the link between the invertebrates and the vertebrates? Discuss its…

A: Protochordates have the similarities with both vertebrates and invertebrates that's why the called…

Marine Evolution

Marine habitat is less explored, and hence, its biological diversity is far less known. The marine habitats are not constant due to their shifting nature, while the terrestrial habitats are more stable. Marine biology is the science that deals with the study of diverse marine species, their interactions, and behavioral characteristics.