What characteristics is the ancestor of tetrapods thought to have had? Choose all that apply

Q: name and describe the craniates that are not vertebrates?

A: Vertebrates are known as craniates because of the presence of a skull or cranium. Craniata includes…

Q: examine the morphology of a millipede and a butterfly.  What characters do they share? Notice how…

A: As per the evolution of organisms, the organisms are divided into various phyla. These are a group…

Q: fishing net brings up a soft bodied animal with a coiled external shell. How can you determine…

A: Cephalopods are only found in the ocean, whereas gastropods are mostly found on land, with a few…

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: Amphioxus does not possess a vertebral column? yes or no?

A: Amphioxus  They are also known as lanceolate and belonging to the group of invertebrate animals.

Q: How are wings and exoskeletons adaptive advantages in terms of the body structure of insects?

A: In this question, we have to mention the adaptive advantage of wings and exoskeleton in the insects.

Q: Members of Chondrichthyes are thought to be descended from fishes that had.. .....................

A: Chondrichthyes includes sharks, rays, and skates, as well as sawfish and a few fish species known as…

Q: One difference between the 'fishapod', Tikaalik, and the early tetrapod, Acanthostega, is... Group…

A: Tetrapod development began approximately 400 million years ago in the Devonian Period, with the…

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: 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: 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: Define about Brachiopods? Define the importance of Brachiopods ?

A: The organisms of the ecosystem have significant properties. Depending upon the different features of…

Q: What is the only difference between a fish and tetrapod

A: The change in the heritable characteristics of the species across many generations is called…

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 are the ecological roles of hexapods and myriapods? Cite some examples of ecologically…

A: Introduction :- Ecology is the study of interaction among the living organisms and with their…

Q: What evidence suggests that radial symmetry in echinoderms was secondarily derived?

A: Radial symmetry means that you cut an organism along any diagonal you will get two equal halves of…

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: What are shared characteristics that are found in clams? Notable cephalization O Coelomates…

A: Clam is a common name for several kinds of bivalve molluscs. The word is often applied only to those…

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: 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: Draw a phylogenetic diagram showing only the interrelationships among the following clades:

A: Phylogenetic interrelationship among the given clades.:

Q: Which trait listed below is found in all the Molluscan classes that we studied (Polyplacophora,…

A: Mollusca is the  second largest phylum of the invertebrate animals.  The mollusk (or mollusk) shell…

Q: origin of tetrapods.

A: Answer: All tetrapod limbs have a common pattern of one bone, two bones, many bones, then digits.…

Q: illustrates four key characters ofchordates: a notochord; a dorsal, hollow nerve cord; pharyngeal…

A: A chordate is an animal of the phylum Chordata. During some period of their life cycle, chordates…

Q: Which statement best describes the symmetry of brachiopods compared to bivalves?     Both…

A: Brachiopods are organisms belonging to Phylum Brachiopoda and  bivalves belong to Phylum Mollusca,…

Q: Which of the following is not a characteristic of the phylum Chordata

A: The phylum Chordata is a group of animals that includes vertebrates (animals with backbones) as well…

Q: Which of the following structures are homologous in arthropods? 1st leg of horseshoe crab: 1st…

A: The arm of a human, the wing of a bird or a bat the leg of a dog and the flipper of a dolphin or…

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: To what subphylum does this animal belong? Chordata Vertebrata Agnatha Gnathostomata Elasmobranchii

A: Animals are divided into taxonomic categories on the basis of evolutionary ties and similar traits.…

Q: what's the importance of morphology used as basis for classifying Cnidarians? does it have more…

A: Solution : Cnidarians are classified into four main groups: non-moving (sessile) Anthozoa (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: Describe four different uses for thoracic appendages seen in different crustaceans. Use specific…

A: Crustaceans form a large, diverse arthropod taxon which includes animals such as decapods, seed…

Q: Create a concept map or an illustration drawing for each phylum (annelida, Platyhelminthes, nemotod,…

A: Concept maps are visualized representations of information that are presented in the form of graphs,…

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: To what order does this animal belong (both animals belong to the same order)? This animal DOES NOT…

A: The picture shown above is of Caecilians. They are basically limbless amphibians, having cylindrical…

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: Which of the 4 characteristics of Phylum Chordata is visible on this organism?     Pharyngeal…

A: To determine which of the four characteristics of Phylum Chordata is visible on an organism, we need…

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: How do we know that echinoderms were derived from an ancestor with bilateral symmetry?

A: Echinoderms got this name from Greek word echinos means spiny and dermos  means skin. Phylum…

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 phyla did you not expect to be grouped together based on their morphology? How could…

A: Introduction  Systematics is a branch of biology that deals with classifying and cataloging animals…

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: Based on an evolutionary perspective, do you think the present forms of cnidarians are the best…

A: Cnidarians are diploblastic organisms , they have organized tissue level, and digestion is…

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: Charles a Biology student in California has found at the beach an animal he cannot name. What are…

A: Some questions which should be asked by Charles to determine the phylum of the animal: First of all…

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.