What developmental characters are used to diagnose protostome and deuterostome groups (clades)?

Q: Compare and contrast the embryonic development of protostomes and deuterostomes

A: Metazoans are divided into protostomia and deuterostomia based on the development of the embryo.…

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: Can the anatomy of extinct ancestral species be inferred from the developmental genes shared by…

A: Evolution is the gradual accumulation of genetic variations to produce new features or the new…

Q: What is notochord?

A: Notochord is a rod that extends through the chordate organisms.

Q: What is a nauplius? What is the difference between direct and indirect development in Crustacea?

A: The ear is divided into the inner ear, middle ear or ear canal and the inner ear. The outer ear…

Q: What invertebrate groups exhibit hydrostatic skeletons? What is the importance of the hydrostatic…

A: Invertebrates are those which do not have vertebral column.

Q: Spiral cleavage can occur in both deuterostomes and protostomes (True/False)?

A: Deuterostomes are animals in which the anus develops from the blastopore and the mouth develops…

Q: What is the most probable primitive condition for the whole group (node A)? O a. Claws O b. Nails O…

A: A cladogram is a cladistics diagram that depicts relationships between species. A cladogram, on the…

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: Describe the differences between protostome and deuterostome development.

A: Protostomes are organisms whose blastopores develops into a mouth. In comparison, Deuterostomes are…

Q: what was chracteristucs define the genus homo?

A: HOMINIDS:- Hominid are known as apes. This hominid belongs to the  Hominidae family includes a…

Q: Define the concept of Invertebrate Deuterostomes ?

A: Invertebrates                     Invertebrates are defined as a group of animals that has no…

Q: Developmental patterns between protostomes and deuterostomes Developmental Pattern Protostomes…

A: The coelomates can be described as organisms that contain hollow space surrounded by the other…

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: What characters unite rotifers and acanthocephalans as members of clade Syndermata?

A: Animal phylogeny is a rapidly changing field for the biologists. Even if the members of animal…

Q: Why are embryological features important for distinguishing the major groups of phyla?

A: Taxonomy is the branch of biological sciences that deals with the identification and classification…

Q: What is the function of the notochord? What organisms possess notochords throughout their lives and…

A: Numerous organisms are present on the phase of earth. Some are simple organisms, while some are…

Q: name and describe the two main lineages within the protostome animals?

A: The kingdom Animalia breaks down into two subkingdoms, Parazoa and Eumetazoa. Parazoa includes…

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: List the two major groups of animals in theDeuterostomia.

A: Deuterostomia are organism in which development of anus takes place first from the dorsal blastopore…

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: What are three shared derived characters of deuterostomes?

A: Animal phylogeny is a rapidly changing field for biologists. Even if the members of the animal…

Q: why is determinatoin of evolutionary relationships among different invertebrate phyla important?

A: Determination of evolutionary relationships among different invertebrate phyla important because it…

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

A:

Q: How does developmental biology provide evidence of a common ancestry for vertebrates as diverse as…

A: Evolution is a gradual change that occurs in populations. Mutation, genetic drift, natural…

Q: Describe key adaptations of aquatic gnathostomes

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

Q: If radial cleavage occurs during development, the animal will be a deuterostome (True/False)?

A: Deuterostome in greek mean second mouth. It make a nephrozoa clade with protostomia clade. they are…

Q: 4 t which number on the phylogenetic tree did amniotic eggs evolve?

A: In amniotes, the shell of the egg provides protection for the developing embryo and allows water…

Q: What is the distinguishing characteristic of each stage in the embryonic development of the sea…

A: Sea urchins are marine invertebrates that show in vitro fertilization where male and female sea…

Q: Are all ‘choanates’ also amniotes?  Are all amniotes in the group Choanata?

A: Introduction: Any animal affiliated to the subfamily Vertebrata, the most common subphylum of the…

Q: Differentiate Protostomes from Deuterostomes in terms of the formation of cleavage

A:

Q: Which type of tail is present in Scoliodon?

A: Fishes are gill-bearing aquatic vertebrate animals. The earliest organisms that can be first…

Q: what is the symplesiomorphic character of deuterostomes? explain

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

Q: Draw a diagram that includes the varlous characteristics of deuterostome development: bilateral…

A: Bilaterians are animals whose embryos show bilateral symmetry. That is the embryo is divided into…

Q: Describe the two major protostome clades and give a diagnostic feature for each

A: The term protostome is from the Greek word meaning "first mouth": "Proto" meaning first and "stoma"…

Q: What are the external characters of Labeo?

A: Labeo belongs to phylum chordata and sub-phylum vertebrata. It belongs to class teleostomi. Its…

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: D. Discuss the development interaction between the actoderm and the mesoderm in the evolution of the…

A: Chordates, including vertebrates, evolved within a group of animals called the deuterostomes.…

Q: Distinguish two mechanisms by which flatworms supply yolk for their embryos. Which system is…

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

Q: Give synapomorphic characters that would group Phylum Kinorhyncha and Priapulida as a sister taxon

A: In phylogenetic studies, the most suitable method to visually represent the evolutionary…

Q: Draw a phylogeny of deuterostomes, indicating the mostlikely relationships among chordates,…

A: Reproduction in animals is a fascinating process. Embryonic development leads to the formation of an…

Q: What is the cleavage pattern (radial or spiral) for the phylum Echinodermata?

A: Echinoderms (scientific name Echinodermata) are a large group of sea animals only. The name for…

Q: Describe the radiation in vertebrate forms from phylotypic stage by focusing on three groups of…

A: The process of increase in biological diversity is called evolutionary radiation. It can be caused…

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: What is the destination of the notochord in vertebrates and in protochordates?

A: A notochord appears in embryos as a small flexible rod made from cells from the mesoderm. It is only…

Q: What is the most probable primitive condition for eutherian (placental) mammals (node C)?

A: Eutherians are differer from noneutherians by various phenotypic traits of the feet, ankles, jaws…

Q: What are the physical similarities exist between each of the embryos? How does the pattern of…

A: Introduction: Evolution refers to the change in the species with time. Every single species living…

Classification of Marine Organisms

Classification is a way of categorizing organisms that enables an easy process of identification of such organisms. All living things are classified by grouping them under specific categories. The grouping is done based on the close relativeness of the organisms. The classification tool requires knowledge of characteristics, differences, and similarities between different organisms.