From an evolutionary perspective, what is the significance of each of the following: (1) placoderms, (2) lungfishes, (3) ray-finned fishes, and (4) Tiktaalik?

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: Describe the major evolutionary innovations that distinguish the fishes from the amphibians.

A: Amphibians are a group of animals that can live on land or in water. They are said to be developed…

Q: What is the select advantage of the evolution of the jaw in dogfish shark?

A: The dogfish shark or spiny dogfish is the species of the Squalidae family of sharks, which is a part…

Q: What is the main evolutionary novelty presented by annelids?

A: Lamarck coined the term Annelida for these ringed animals. He established this phylum as the first…

Q: Only eight species of lobe-finned fishes are alive today, remnants of a group that flourished in the…

A: The Devonian Period occurred from 416 million to 358 million years ago. It was the fourth period of…

Q: In what ways do the genera Australopithecus and Homo differ?

A: Genetic evidence showed that about 7-10 million years ago, humans were evolved from chimpanzees. The…

Q: What are the key events in the evolution of the animals?

A: Evolution can be defined as the change in the characteristics of species over several generations…

Q: What is meant by homologous structures? What is meant by serial homology, and how do crustaceans…

A: The structures present in different organisms which are anatomically similar but functionally…

Q: Discuss the evolutionary significance of lobe-finned fishes.

A: Lobe-finned fishes (Sarcopterygii) have a lobe in their fins. They have a paired fleshy pectoral and…

Q: To what extent are vertebrate external morphologies adapted for various functions?

A: Adaptation is one of the principal cause of evolution. Adaptation enables an organism to survive in…

Q: From the shared traits of present-day snails,squids, and clams, what features do you think the…

A: Mollusks are the members of the phylum Mollusca which is one of the diversified and largest animal…

Q: Is there any genetic evidence linking lobe-finned fish and amphibians

A: Lobe-finned fishes and amphibians are closely related and connected through a common ancestor which…

Q: What feature separates the Chondrichthyans (sharks and rays) from the lobed-finned fishes? O some…

A: The class Chondrichthyes has two subclasses: the subclass Elasmobranchii (sharks, beams, skates, and…

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: Select one: O a. Lancelets and hagfishes are equally related to cartilaginous fishes O b. Lampreys…

A: Any member of the phylum Chordata, which includes the most advanced animals, vertebrates (subphylum…

Q: From which diapsid subgroup have crocodilians descended? What other major fossil and living…

A: An organism is any individual entity that embodies the properties of life. Organisms are classified…

Q: What similarities do birdsand reptiles share regardingexternal coverage,reproduction and excretion?

A: Birds are the warm-blooded vertebrate animals constituting the class aves. They are characterized by…

Q: What derived characters do sharks and tuna share? Whatfeatures distinguish tuna from sharks?

A: Pieces are true, jawed vertebrates with specific organs for respiration, excretion and blood…

Q: How does variation in resistance to toxic rough-skinned newts affect the evolution of garter snakes?

A: The rough-skinned newt is famous for it's strong toxin released from it's skin. have rounded snout,…

Q: What are the 4 embryonic characteristics of chordates? Define each characteristic.

A: Chordates belong to the phylum Chordata. Their body is bilaterally symmetrical and metamerically…

Q: Describe the major vertebrate adaptations that arose in fishes. Which of these features are also…

A: Fishes are the aquatic chordate animals which belong to Pisces family. Fishes are used as delicacy…

Q: What would have happened to major vertebrate groups if urinary and reproductive went on to evolved…

A: Urogenital system in vertebrates are organs related to fertility and urination. The reproductive…

Q: Describe four characteristics shared by all jawed fishes.

A: Gnathostomes are the jawed vertebrates. Their diversity comprises 60,000 species that account for…

Q: What is/are the major comparison(s) between the tunicates and bony fish?Are tunicates inverterbrate…

A: Tunicates are marine invertebrates that belong to the Tunicata subphylum. They are members of the…

Q: Hagfishes and lampreys are the only living representatives of a veryancient group. Why do you…

A: Jawless fish belongs to phylum Chordata, subphylum Vertebrata, and class Agnatha. The class includes…

Q: What is the role of segmentation and tagmatization in the evolutionary success of the arthropods?

A:

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: 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: What would happen to major vertebrate groups if urinary and reproductive systems went on to evolve…

A: The skeletal system of vertebrates is crucial for evolutionary biology research. Comparative…

Q: How can we understand the evolutionary relationships among animals, and how, in turn,can we…

A: Answer: Introduction: A phylogenetic tree, also called as a phylogeny, is a diagram which shows the…

Q: In 1928 Walter Garstang hypothesized that tunicates resemble the ancestral stock of the vertebrates.…

A: Introduction: Tunicate dwells in marine environment and is an invertebrate belonging to subphylum…

Q: What does your analysis suggest about the role of miRnAdiversity in the evolution of animal…

A: The miRNA refers to the microRNA present in animals, plants, and in a few viruses. It is a…

Q: 1. Describe evidence showing that echinoderms are more closely related to chordates than are other…

A: Introduction :- Marine invertebrates classified as echinoderms include starfish, brittle stars, sea…

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: Based on phylogeny and history of evolution, do new anatomical features such as lungs (amphibians)…

A: The study of links between various groups of species and their evolutionary development is known as…

Q: Given that modern echinoderms and chordates look nothing alike, what factors have led zoologists to…

A: Echinoderms are animals that belong to the phylum Echinodermata. They are recognized by radial…

Q: identify at least5 homologous structures between sharks and pigeons

A: Homologous structures  Structures that are structurally similar but have different functions.

Q: How has paedomorphosis been important to evolutionary diversifi-cation of salamanders?

A: Phylogenetic evolutionary history consists of the analysis of the sequences of the common ancestors…

Q: Are Lepidosaurs and Archosaurs are monophylum

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Do female frogs have more pigmentation ventrally than male frogs? And does the maxillary teeth of…

A: Frogs are the organisms which belongs to the amphibian family of the vertebrate. It has a tendency…

Q: What is the currently favored explanation for the evolution of vertebrate jaws?

A: The jawless vertebrates belong to the subphylum Vertebrata under the section Agnatha. The…

Q: Are Protostome and Deuterostomes only applicable to tripoblastic animals?Are Cnidarians even…

A: Protostome along with deuterostomes and the Xenacoelomorpha are a group of animals called bilateria.…

Q: Describe how metamorphosis changes the structures involved in gas exchange over the life cycle of…

A: Amphibians are defined as the animals that belong to the class of cold-blooded vertebrates. These…

Q: Based on anatomy, fossil, embryos, and DNA what are the closest living relatives of cetaceans, fish…

A: Cetacean, any member of a completely aquatic cluster of mammals usually referred to as whales,…

Q: If members of a group, such as chordates , evolved from a common ancestor then they should show…

A: The oldest discovered fossil of chordate is Pikaia gracilens belonging to cephalochordate. It is…

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: Craniata includes animals within Chordata that have a skull.   True or False?

A: Animals can be grouped into chordates and non-chordates. The chordates have a backbone or notochord.…

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…

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.