In Figure 33.2, which two main clades branch from the mostrecent common ancestor of the eumetazoans?(A) Porifera and Cnidaria(B) Lophotrochozoa and Ecdysozoa(C) Cnidaria and Bilateria(D) Deuterostomia and Bilateria

Q: Which of these models correctly identifies the most recent common ancestor diplobla Cnidaria…

A: Diploblastic animals such as jellyfish, sea anemones, and corals do not have a mesodermal germ…

Q: Is the lophotrochozoan clade united byunique morphological features sharedby all of its members?…

A: Lophotrochozoan is an unranked clade or superphylum that belongs to the protostome within the…

Q: What features make placozoans interesting from a phylogenetic perspective?

A: The phylum Placozoa is a basal form of free-living multicellular organism. It consists of a small…

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: Based on the phylogenetic tree diagram in Figure 34.2, predict which vertebrate groups should have…

A: A phylogenetic tree is a branching diagrammatic representation of evolutionary relationships between…

Q: Kingdom: Animalia Phylum: Chordata Order: Dipnoi Suborder: Ceratodontoidei Family: Neoceratodontidae…

A: Neoceratodus forsterai is the only surviving lungfish species and is very old making it a living…

Q: Why are porriferans asymetrical? Cnidarians radial? The rest bilateral? (based on evolution)

A: It is required to provide the reason for assymetrical nature of poriferans, radial symmetry of…

Q: List four differences between protostomes and deuterostomes.

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

Q: List the predominant body plan (acoelomate, pseudocoelomate, or coelomate) for members of each…

A: Protostomes refers to a group of animals that have bilateral symmetry that is body is divided into…

Q: If chaetognaths belong to Lophotrochozoa, they would be more closely related to animals like…

A: Chaetognaths are phylum of the predatory marine worms.

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: What era did Australopithecus afarensis evolve?

A: It is required to identify the era in which Australopithecus afarensis evolve.

Q: Please complete the following (abbreviated) cladogram of Metazoa, labeling tips, nodes and…

A: Metazoans are multicellular eukaryotic animals. They show various levels of cell differentiation and…

Q: Tabulate the similarities and differences of the two basal metazoan phyla. In what ways are Placozoa…

A: 1. Both are strictly aquatic and diploblastic (composed of two layers but their nature is…

Q: Which of the following statements is CORRECT? Eumetazoans lack true tissues Cnidarians have three…

A: The living organisms are categorized into 5 main groups. This is known as the five-kingdom…

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: Where do invertebrates fit into the evolutionary history ofeukaryotes? Of animals?

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

Q: Consider clades Bilateria, Lophotrochozoa, Metazoa, Chordata,Ecdysozoa, Eumetazoa, and…

A: A clade can be defined as a grouping that comprises of a common ancestor and its each and every or…

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: About how big are gastrotrichs, gnathostomulids, and micrognathozoans?

A: Gastrotrichs, gnathostomulids, and micrognathozoans are three groups of worm-like animals that are…

Q: by comparing and contrasting the physical features of a shark, guitar fish and the sting ray, what…

A: We all know that the largest shark is the whale shark (Rhiniodon typus) with length of 13-39 ft and…

Q: What is the sister group to the Tetrapoda clade?

A: A sister group or sister taxon is a phylogenetic term denoting the closest relative(s) of another…

Q: Animal phylogenies based on molecular and

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

Q: Draw a phylogenetic tree depicting our current understanding of the animal phylogeny. Include the…

A: Phylogenetic tree of animal is based on morphological, genetic and fossil evidence that helps us to…

Q: Describe two colonial cnidarians.

A: Cnidarians are soft-bodied animals that have a symmetry. They also have tentacles that are armed…

Q: Find the animal on the phylogenetic tree and classify it as either protostome or deuterostome, and…

A: Animals that undergo protostome during their embryonic development are called as Protostomes.

Q: Protochordates Protostomes Deuterostomes CHORDATES Tripartite coelom, larva Chordate ancestor |…

A: Both the deuterostomes and protostomes have bilateral symmetry bodies and they are categorized based…

Q: Briefly describe characteristics of the hypothetical ancestral mollusc, and tell how each class of…

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

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: What characteristics distinguish Branchiopoda, Ostracoda, Copepoda, Thecostraca, and Malacostraca?

A: The phylum Arthropoda has ten sub-classes namely, a) Euchelicerata b) Chilopoda c) Diplopoda d)…

Q: what do fossils tell us about the evolutionary history of the animal kingdom?

A: The traces or remains of an organism that once lived on Earth is termed as fossil. Fossils somehow…

Q: What are examples of the following groups of vertebrates: Chondrichthyes, Actinopterygii,…

A: The vertebrates are a group of animals that have a spinal cord that is enclosed by cartilage or a…

Q: Which of the following groups of early-diverging animals is comprised of two layers of cells that…

A: External epidermis and internal gastrodermis have 2 major cell layers.

Q: If nematodes are the most numerous animals, the Arthropoda, including insects, are the most diverse,…

A: Arthropods is the largest phylum of Animalia , they are also called ecdysozoans with paired…

Q: Why are all animals comprised of the clade metazoa?

A: Kingdom Animalia comprises the clade metazoan. Traditionally, the term metazoan has been used to…

Q: What is the following specimen? Our invertebrate zoology professor told us there is a bryozoan on…

A: It is a Bryozoa which is commonly called as Moss animal, they are also called as Ectoprocta and…

Q: rotostomes Deuterostomes CHORDATES Tripartite coelom, larva Chordate ancestor |(Notochord, post-anal…

A: Deuterostomes are animals typically characterized by their anus forming before their mouth during…

Q: Abstract 1 "The new animal phylogeny inferred from ribosomal genes some years ago has prompted a…

A: This is a multipart question.So, I am answering first three parts for remaining answers ease repost…

Q: Please complete the following (abbreviated) cladogram of Metazoa, labeling tips, nodes and…

A: Cladogram -- In olden days biologists grouped the organisms based solely on their physical…

Q: Download a phylogenetic tree of Bilateria that includes the ten phyla of bilaterian discussed in…

A: A diagram is used to depict the evolutionary line of descent from a common ancestor for organisms,…

Q: Are mollusc metameric beings? Exclusively analyzing this feature could it be said that molluscs are…

A: The mollusks are a diverse group containing 85,000 species. These are mostly marine species.

Q: What do fossil tetrapods tell us about the transition from water to land?

A: The animals that have 4 limbs are known as tetrapods and constitute the superclass Tetrapoda which…

Q: Animal Diversity Second mouth Asymmetrical animals Symmetrical animals Spiny skin Radial symmetry…

A:

Q: What habitat is shared by micrognathozoans and gnathostomulids?

A: Members of two of the bilaterally symmetrical triploblastic phyla have acoelomate bodies. A coelom…

Q: Why are Cnidarians diploblast and other animals tripoblast based on evolution?

A: In the early developmental stages, the embryo of the vertebrates organizes itself into a…

Q: Which of the following does NOT ALWAYS describe ecdysozoans?    a. They exhibit bilateral symmetry.…

A: The Ecdysozoa is a superphylum that consists of nematodes and arthropods making it one of the…

Q: What was the evolutionary significance of segmentation and the coelom to its earliest…

A: The coelom is defined as the main body cavity present in animals and thus, it is positioned inside…

Q: Three major phylogenetic groups of Bilateria are currently recognized: Ecdysozoa, Lophotrochozoa,…

A: Since the drastic reorganisation of the phylogeny of the animal kingdom into three major clades of…

Q: List down the similarities and differences present between a cnidarian medusoid and an adult…

A: List down the similarities and differences present between a cnidarian medusoid and an adult…

Q: Describe the origin of tetrapods and identify some of their keys derived traits

A: Tetrapods are four limbed animals . Animlas such as the amphibians, reptiles and mammals with four…

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.