What invertebrate groups exhibit hydrostatic skeletons? What is the importance of the hydrostatic skeleton in these systems?

Q: three examples of species of cnidarians

A: Cnidarians are distinguished from all other animals by having cnidocytes that fire harpoon like…

Q: These differ from the other classes of sponges in that their cells are syncytial (multinucleate and…

A: Sponges are comes under the group called Porifera. The presence of pores on their body is a special…

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: Define the term diphyodont.

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

Q: What are the two main morphological patterns of cnidarians? Concerning locomotion how do these forms…

A: Cnidarians, also known as coelenterates are mostly marine organisms and includes corals, hydras, and…

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: What are the features of trabeculae?

A: The human body is a well built machine in which all the organs coordinate together to make it work.…

Q: How are the valves of a brachiopod oriented in terms of the dorsalventral axis?

A: Brachiopods belong to the Phylum Brachiopoda, which is a monophyletic group. These organisms are…

Q: Describe and contrast the tegument of most turbellarians and the other classes of Platyhelminthes.…

A: Turbellarians do not have a tegument but have a cellular, ciliated epidermis resting on a basement…

Q: What does Hemidactylus mean?

A: Geckos are reptiles and are found on all the continents except Antarctica. These colorful lizards…

Q: What material is found in the skeleton of all sponges?

A: Sponges are members of the phylum Porifera. Sponges are a multicellular organism that has bodies…

Q: Is the nervous system in platyhelminthes more or less sophisticated than in cnidarians? What are the…

A: Planarians includes flatworms that belong to the Class Turbellaria. These are free-living organisms…

Q: Which of the following is not a synapomorphy of craniates?

A: Craniates are a group of chordates that includes many organisms that have a cranium or a braincase.…

Q: hat are three examples of species of hydrostatic ske

A: Skeleton - It is the hard structure that protects the internal organs of a living thing. It may…

Q: Protostomes- which animals are typical and what do these words mean? 1. Acoelomate 2. Pseudocoemate…

A: The word "protostome" comes from the Greek words "proto," meaning "first," and "stoma," meaning…

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: What type of scale is found in Scoliodon?

A: Scoliodon is a marine shark , also known as Dog fish due to it's dog like protruded snout . Phylum…

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: What features of a hydrostatic skeleton do Sponges, Cnidarians, Nematodes, Annelids, and Arthropods…

A: The most frequent skeletal system for movement and support in animals is the hydrostatic skeleton.…

Q: What are some general features of the phylum Platyhelminthes and describe two.

A: platyhelminthes are group of flat worms , which are found in different habitats .

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: What differences in morphology among Osteolepiformes (Eusthenopteron), Tiktaalik, and Ichthyostega.…

A: Osteolepiforme- Long and slender, with posterior fins set far back and a long mouth lined with…

Q: identify the common name of this animal's skull?

A: Skull is the bony structure present superior to the brain, it is the protecting shield that protects…

Q: what synapomorphic characteristic body plan is or has first appeared with the annelids?

A: Synapomorphic characters are those which are shared by two or more taxa.  It is derived from…

Q: How does the arrangement of skeletal structures differ in sea urchins, sea stars, and brittle stars?…

A: Star fish, brittle star and sea urchin fall under big family of Echinodermata. There are several…

Q: Differentiate the following according to their anatomical characteristics. Give at least five…

A: INTRODUCTION  The Chondrichthyes is the category of bony fish and mainly their exoskeleton  is…

Q: Are the skeletal plates of Blue Sea Star arranged regularly or irregularly?

A: Sea stars, additionally called starfish, are marine invertebrates of the class Asteroidea (phylum…

Q: Brachiopods may occur in depth - related assemblages are so adapted in order to exclude foreign…

A: Brachiopods are the marine animals that have an extremely old origin on earth. They evolved some 550…

Q: What are the differences between the polyp forms of Hydra and Obelia and the Anthozoan polyps.…

A: These three organisms belong to the same phyla - Phylum Cnidaria. They are aquatic and species are…

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: Why is bilateral symmetry of adaptive value for actively motile animals?

A: Bilateral symmetry is a pattern of symmetry where the opposite sides are normal or one side is…

Q: What is clasper in scoliodon?

A: Scoldion or the Dogfish belongs to the shark family.

Q: What are the major evolutionary features that distinguish Phylum Platyhelminthes from earlier phyla?…

A: The phylum is defined as the taxonomic rank or classification level and placed below kingdom and…

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: How many chambers does a scoliodon have?

A: The class Elasmobranchii consists of a large variety of cartilaginous fishes. Scoliodon is known as…

Q: What functional problem results from torsion? How have gastropods evolved to avoid this problem?

A: The shell is first formed in the veliger larval stages of gastropods. This larval stage has two…

Q: Which of the following statements regarding dipnoi (lungfish) is true?     amniotes share a more…

A: Lungfish are freshwater  rhipidistian vertebrates belonging to the order Dipnoi. Lungfish are best…

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: What is a radula and what is its function?  What is a mantle and what is its function

A: Given: Need to define radula and it's function Need to define mantle with it's function.

Q: How many gill slits are present in Scoliodon?

A: Scoliodon or shark belongs to class Chondrichthyes.  Their skeletons made up of cartilage rather…

Q: Compared to the skulls of ancestral sarcopterygians and modern lungfish the skulls of Acanthostega…

A: The skull is a bone structure that forms the head in vertebrates.

Q: What would be present in Spongebob's poriferan skeleton? Specify the chemical composition as well as…

A: The SpongeBobs poriferan Skeletal  structure  are containing spicules and spongin fibres. Skeleton…

Q: What are similarities exist among Lycopods and horsetails? What are some of the differences

A: The kingdom Plantae includes land plants and green algae. Based on the presence or absence of a…

Q: How does the arrangement of skeletal structures differ in sea urchins, sea stars, and brittle stars?…

A: Sea urchins have five-fold symmetry,

Q: What is the difference between Labeo and Scoliodon?

A: Fishes are gill bearing aquatic animals that belong to the kingdom Pisces and phylum chordates. They…

Q: What are some examples of cnidarians? In which environments can these animals be found?

A: Hydra, jellyfish, coral are the some examples of cnidarians. Presence of cnidoblast cell in their…

Q: What is the number of shells each organism has (Cephalopoda Scaphopoda)?

A: Shell or seashell is a hard protective layer formed by an animal that lives in the sea. Shell is…

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.