Which of the following is not a synapomorphy of craniates?

Q: Define the term diphyodont.

A: The suffix dont is used to describe teeth. So, the term diphyodont refers to specific pattern…

Q: Sawfly larvae differ from Lepidoptera caterpillars | by having more prolegs. | by having…

A: Sawfly larvae ( belonging to order Hymenoptera) are immature stages of wasps or bees that have…

Q: Wouldn't the presence of myomeres in vertebrates be neither symplesiomorphic no synapomorphic when…

A: Synapomorphy is an evolutionary relationship in which a trait is shared by 2 or more taxa and their…

Q: Why and how do you think the phenomenon of periodicity in filiarial worms evolved?

A: Microfilaria is the early Juvenile stage in many of the worms belonging to the group nematodes.…

Q: Which feature is found only in gnathostomes?     both pelvic and pectoral fins or appendages…

A: Gnathostomes are those organism who have jaws in their body. It includes two groups: Pisces: It…

Q: Based on similarities among forelimbs, what bones did the common ancestor of tetrapods probably…

A: Introduction : Homologous organs are those organs that have a common origin but different functions.…

Q: Amniotes are divided into three groups based on their skull mor-phologies. What are these three…

A: Amniotes are organisms whose animals have embryos that develop in amnion and chorionic and has an…

Q: modern organism is most closely related, evolutionarily, to the Megalodon.

A: Megalodon is no longer living; it died out about 3.5 million years ago. Megalodon (Carcharocles…

Q: Explain the term thecodont and diphyodont.

A: The term dentition refers to the development of teeth and their arrangements in the mouth. In…

Q: Why gorillas are classified as a clade teleostomy and the reason for the name chosen?

A: Gorillas are placed in the clade Teleostomi. Teleostomi consists of all bony fish and tetrapods i.e,…

Q: What physical feature is found on most free-living insects, including free living lice, that is…

A: Introduction: Insects can range in size from large—like the 130 mm bush giant dragonfly—to…

Q: What segment of the grasshopper, a typical insect, contains the legs? What segment of the lobster, a…

A: Phylum Arthropoda is the largest phylum which consists of many invertebrates. It includes…

Q: Briefly explain how radial symmetry and the lack of cephalization usually associated with it can…

A: Thank u for the question  Answer : Radial symmetry has an adaptive value for sessile animals because…

Q: For each of the following distinctive structures, name theanimal group in which it is found:…

A: Answer: Animal group in which mantle is found ~ molluscs       Share some unique characteristics…

Q: Of all of the robust australopithecines, I am the most primitive, dated to 2.5 mya. I have an…

A: The extinct group of primates known as Australopithecus—Latin for "southern ape"—is the source of a…

Q: What are the most probable characteristics of the most recent com-mon ancestor of insects? What…

A: The members of phylum Arthropoda are collectively referred to as arthropods. Segmented body, the…

Q: Explain the phenomena of the loop of Henle.

A: Loop Of Henle long U-shaped portion of the tubule that conducts urine within each nephron of the…

Q: Is a cartilaginous skeleton a homolgy between early gnathostomes and cyclostomes due to their shared…

A: Gnathostomata is a class of jawed vertebrates and consists of around 60000 species of vertebrates.…

Q: Why aren't wind turbine blades with tubercles inspired from the humpback whale flippers more used…

A: An increasingly common renewable energy source is wind energy. Turbine blade layout is essential to…

Q: how did bat wings evolve from arms?

A: Evolution is the process of change in the features of an organism with time. It is based on the…

Q: Discuss the idea that every evolutionary adaptation has both advantages and disadvantages, using…

A: Cephalization is the development of ahead, where the sensory organs and the brain are organized.…

Q: What factors support the placement of phoronids and brachiopods as sister taxa?

A: The tree phyla-Phoronida, Ectoprocta, and Brachiopoda-possess a crown of ciliated tentacles, called…

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: What are the descriptions of the hard shell of its periostracum and hinge line

A: Mollusc are animal's ehich have soft bodies and live inside the shell and these shells are of…

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: Triops evolved 350 million years ago and its morphology has not changed much throughout time. Why do…

A: To explain  Why Triops evolved 350 million years ago and its morphology has not changed much…

Q: Molecular sequence data indicate that Xenoturbella is a deuteros-tome. Are there corresponding…

A: In the living world, we see a large number of microorganisms, animals and plants. These organisms…

Q: Aristotle classified all large, mobile, unshelled aquatic animals without a vertebral column as:…

A: The objective of the question is to identify the classification Aristotle used for large, mobile,…

Q: Which of the following is true as the presence of bones is similarly found both in the baleen whale…

A: Baleen whales (systematic name Mysticeti), also known as whalebone whales, form a parvorder of the…

Q: describe one way in which limb development in Acanthostega could differ from that in modern…

A: A group of extinct stem-tetrapods called Acanthostega was among the first vertebrates to exhibit…

Q: What is a synostosis? How does it differ from asyndesmosis or a gomphoses?

A: Synostosis is fusion of two or more bones. It can be normal in puberty, fusion of the epiphyseal…

Q: Evolution of the tetrapod limb was one of the most important events in vertebrate history. Describe…

A: The movement of tetrapods from the marine to the terrestrial environment signifies the evolution of…

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: What are three most important point in Anuran’s metamorphosis, that you find the most interesting…

A: Metamorphosis is the change of shape during an animal's life. There are some destructive and…

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…

Animal Phylogeny

Cladistics is a method of biological classification where organisms are classified based on their ancestors and their relationship with them. It is defined as the concepts and methods for determining the branching patterns of evolution and evolutionary history. Some scientists, however, have preferred the term phylogenetic systematics or phylogenetic taxonomy to emphasize the reliance on a phylogeny for classification. It is the most common and accepted method for classifying organisms.