Figure 15.38 A West Indian or Florida manatee (genus Trichechus). In spite of their appearance, manatees have a rela- tively low fat content and are vulnerable to cold shock. uming Aghis Raser:ed. Ma nei te copied. scamed or duplicaned in whele cr in pari. lu: kue ed coment does noe maleriall; afiect the cerall karning experience. Lengaglearning te suppressed from the eBook and/or eChapter(s). hional content at any time if subsequent rights restrictions require it. Paul Nicklen/National Geographic Societv/Corbis

Q: What are the features that result in tunicate’s being classified as an animal, chordate and…

A: Urochordata are also known as tunicates because outer body of tunicates is covered by tunic which is…

Q: give the function of these shark parts. 1. pectoral fin 2. pelvic fin 3. anal fin 4.…

A: Sharks are excellent swimmers, with streamlined bodies and specialized fins that allow them to move…

Q: Which of these invertebrate groups has shown the ability to learn (Remember the social learning…

A: Cephalopoda are a quick learners. They can figure out how to explore straightforward labyrinths.…

Q: Lampreys Sharks Lungfish Amphibians Land vertebrates Tetrapoda Choanata Fingers and toes What is the…

A: The above diagram is called phylogenetic tree. Phylogenetic tree show the evolutionary relationship…

Q: What adaptation did lobe- finned fish have that was different than the previous organisms? A. lobes…

A: Introduction  Fish are aquatic vertebrates that lack limbs with digits, such as fingers or toes, but…

Q: What features of squid and octopuses are adaptations for predation?

A: Mollusks are a part of the invertebrate phylum. These include slugs, mussels, snails, and octopuses.…

Q: What are the characteristics of a female mud crab ( Scylla serrate) on its carapace?

A: Carapace is meant for the protection and it vary in size and is different in males amd female.it is…

Q: How is the large size of some cephalopods related to the type of circulatory system they present?

A: Mollusca is the largest marine phylum of the animal kingdom that is characterized by a mantle with a…

Q: How are the echinoderms significant to the marine environment? Relate some (at least two) of their…

A: Echinoderms -- Echinoderms are the members of the phylum Echinodermata . Animals have numerous…

Q: How are the 4 chordate synapomorphies evident in a tunicate larva and in an adult tunicate?

A: Although tunicates are classified as chordates, only the larval form possesses all four common…

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: This is a basal gnathostome more closely related to bony fishes O Dunkleosteus O Geotria O…

A: Gnathostomes meaning “jaw-mouths” are vertebrate organisms possessing jaws. The jaw development was…

Q: Are there economically important species of hexapods and myriapods?    What is their overall…

A: Hexapods  They are the six legged animals such as butterfly, bees, housefly etc.

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: Which phylum do you belong to? 1. Echinodermata 2. Platyhelminthes 3. Annelida 4. Porifera

A: Linnaeus introduced system of taxonomy which depends on seven levels of classification grouped…

Q: Which of the following features do sponges lack that some other animals have? (a) segmented body…

A: 5 kingdom classifications is a type of classification in which living organisms are classified into…

Q: Which of the following structures is not a component of the watervascular system of an echinoderm?…

A: The group of multicellular and heterotrophic organisms belonging to the kingdom Animalia is called…

Q: Explain how each molluscan feature is modified, compared to gastropod and bivalve body plans. 1)…

A: Cephalopods, Gastropods and Bivalvia are all classes of Molluscs. They differ in their habitats. For…

Q: How might the ability to crawl on land for short periods haveenhanced the reproductive fitness of…

A: Tiktaalik is an extinct fish and lived approximately 375 million years ago. Even though Tiktaalik is…

Q: A new group of echinoderms, the sea daisies, or concentricycloids, wasdiscovered in 1986. They are…

A: Marine organisms were the earliest form of life. The soonest organic entities have insignificant…

Q: Why is the occurrence ofeyelids in amphibians incomparison to their absence infishes an adaptation…

A: Amphibians belong to the phylum Chordata. They are vertebrate tetrapods. This group includes frogs,…

Q: What are the reasons that you can think of for the arthropods to constitute the largest group of the…

A: The phylum Arthropoda consists of invertebrate animals such as insects, arachnids, and crustaceans.…

Q: Threespine sticklebacks that invaded freshwater lakes have lost their pelvic spines. What other…

A: Threespine sticklebacks (Gasterosteus aculeatus) are commonly found in the ocean. They are…

Q: SO you wish to be a chordate do you? Which of the following are not essential to that distinction? O…

A:

Q: What character does the term rhizarian indicate about the forams and actinopods?

A: Rhizaria are an ill-defined, species-rich supergroup consists mostly of unicellular eukaryotes.…

Q: How are the echinoderms significant to the marine environment? Relate at least three of their…

A:

Q: Why gorillas are 1)euteleostomi 2) sarcopterygii 3) didnotetrapodomorpha And reason for the chosen…

A: Introduction  Gorillas are large, herbivorous primates that belong to the family Hominidae, which…

Q: Which of the following taxa of fish shared most direct common ancestry with the group of animals…

A: The group of animals that evolved into terrestrial tetrapods (four-limbed vertebrates) had their…

Q: is the group of protochordates considered monophyletic? yes or no? explain

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

Q: Why are echinoderms considered part of the Deuterostomes, despite having incredibly unique…

A: Echinoderms are marine, spiny invertebrates belonging to the phylum Echinodermata, superphylum…

Q: Why was the medusa stage lost in some cnidarians? Do you think it is more advantageous

A: Solution : In the phylum Cnidaria, which includes jellyfish and sea anemones, polyp and medusa are…

Q: Pisces Osteichthyes (bony fishes) Sarcopterygii (lobe-finned fishes) mata atha) Tetrapoda Amniota…

A: Monophyletic taxonomic group is one that has Category of organisms descended from one ascendant ,…

Q: What is a body structure that is found in Bony fish but not in Cartilaginous fish?   Teeth Gills…

A: The animal kingdom is diverse constructing millions of species. Fishes are one group of vertebrates…

Q: You do not have a notochord, a tail, or pharyngealslits. How do we know that you are a chordate?

A: Phylum Chordata is the most common phylum present in the animal kingdom. These animals have…

Q: invertebrate chordate. Which of the following would ensure that you are indeed looking at a…

A: A vertebrate is an animal with a spinal cord surrounded by cartilage or bone. The word comes from…

Q: Which of the following is a characteristic of all chordates at some point during their life cycle?…

A: Kingdom Animalia includes the phylum Chordata. The phylum Chordata is further divided into three…

Q: Lateral undulation is a type of locomotion used by many basal Chordates, but it is used by derived…

A: Option 1 is correct because all living crocodilians are aquatic and they swim with lateral…

Q: Which of the following is the correct classification for this chordate animal: This vertebrate…

A: Amphibians are cold blooded verte­brates having a smooth or rough, naked skin, rich in glands, which…

Q: Which of the following is NOT a defining chordate characteristic? O post-anal tail O vertebrae O…

A: Introduction Chordates belong to the kingdom Animalia. They are group of animals which include…

Q: Describe the forams and actinopods, and explain why many biologists classify them in the rhizarian…

A: Introduction The Rhizaria are a nebulous supergroup of primarily unicellular eukaryotes with a large…

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…

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.