Distinguish between (a) radial and bilateral symmetry; (b) blastula andgastrula; (c) direct and indirect development; (d) complete andincomplete digestive tracts; (e) coelom and pseudocoelom.

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: Bring out the differences between a cephalochordate and an agnathan regarding circulatory system?

A: The cephalochordate is an animal in Cephalochordata subphylum. These are segmented marine organisms…

Q: What is notochord?

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

Q: In what ways do the genera Australopithecus and Homo differ?

A: Genetic evidence showed that about 7-10 million years ago, humans were evolved from chimpanzees. The…

Q: How did the origin of jaws, lungs, limbs, and the amnion affect thecourse of vertebrate evolution?

A: A vertebrate is an animal that has a backbone and a skeleton. Human beings are part of this…

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: Concerning tissue complexity how different are cnidarians from poriferans?

A: Poriferans and Cnidarians are organisms belonging to the Animal Kingdom. Phylum Porifera are also…

Q: Which arthropod class is the most diversified animal group of the planet? How can this evolutionary…

A: Arthropods have jointed appendages. They are characterized by wings and  3 pairs of legs.

Q: Does coelom present in bilateria?

A: A celom is the hallow cavity which is filled with celomic fluid present between the intestinal canal…

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: How does a molluscan coelom develop embryologically? Why was the evolutionary development of a…

A: Molluscs area unit found it nice ranges of habitats, from the tropics to the polar seas, at…

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: First with body segmentation 1. Echinodermata2. Platyhelminthes3. Annelida4. Porifera5.…

A: The kingdom Animalia is classified into vertebrates and invertebrates. Some of the invertebrate…

Q: What similarities do birdsand reptiles share regardingexternal coverage,reproduction and excretion?

A: Birds are the warm-blooded vertebrate animals constituting the class aves. They are characterized by…

Q: What is archegonium?

A: Archegonium is a female sex organ that is found in bryophytes, pteridophytes and most gymnosperms.

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 is a key characteristic of all arthropods? a. Six legs c. Hydrostatic skeleton b. Pseudocoelom…

A: Arthropoda are invertebrate animals equipped with joint appendages. It is the largest phylum of…

Q: What are some adaptive advantages of a pseudocoel compared to the acoelomate condition?

A: In animals the body cavity (coelom) is the area or free space that contains all the organs suspended…

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

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

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: What is the difference between atrium and coelom?

A: Cell organelles are structures within a cell that perform specific functions like controlling cell…

Q: Describe the development of the notochord. Include the terms primitive pit, notochordal process,…

A: The Notochord is a cartilaginous skeleton that supports the body in the form of a rod. It is found…

Q: Protostomes and deuterostomes typically differ in

A: Protostomes are clade of animals containing phyla including the arthropods,annelids and…

Q: The phylum Nematoda is protostome or Deuterostome ?

A: Phylum Nematode commonly referred to as roundworms or thread worms are aquatic or terrestrial,…

Q: How and why did sponges develop skeletons, given that they were the first animals, there were no…

A: Sponges are the simplest form of multi-cellular organisms with structural complexities. They have…

Q: What is the role of gnathostomata in vertebrates?

A: Phylum Chordates are characterized by the presence of four diagnostic characters notochord, dorsal…

Q: Define the features of segmentation and coelom?

A: The animals have adapted various features for their survival, out of which some has passed on to the…

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: having a post-anal tail and gill slits are traits of all embryos belonging to which phylum?

A: Pharyngeal slits are openings in the pharynx that develop into gill arches in the bony fish and into…

Q: What are the animal poleand the vegetal pole of thevertebrate egg?

A: An embryo possess some polarity, according to which an embryo is divided into two hemispheres or…

Q: Identify the two features of body plan that evolved with the cnidarians and ctenophores. Explain the…

A: Locomotion and body support- The cnidarian body is capable of some kind f coordinated movement.…

Q: How can the endoskeleton of echinoderms be characterized in comparison to analogous structures…

A:

Q: Are Protostome and Deuterostomes only applicable to tripoblastic animals?Are Cnidarians even…

A: Protostome along with deuterostomes and the Xenacoelomorpha are a group of animals called bilateria.…

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: 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: What is the notochord?How is this structure formed?

A: Embryology is about the study of zygote and embryonic and organ development in plants and animals.…

Q: Concerning germ layers and the presence of coelom how are arthropods characterized?

A: Arthropods belong to kingdom Animalia and phylum Euarthropoda. Artho means joint and pous mean…

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: How many gill slits are present in Scoliodon?

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

Q: What is the coelom? Towhich structures do coelomsgive birth? Are all animalscoelomate?

A: The alimentary canal or the gut is the long and coiled tube that extends from mouth to anus. It…

Q: Coelom formation in Deuterostomes is ____________ whereas in Protostomes is _____________.

A: Metazoans are classified into deuterostomes and protostomes due to their different embryonic…

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: How did the characteristic differences between aquatic and terres-trial environments influence the…

A: The basic differences that animal are required to accommodate while moving from water to land are…

Q: Why do you believe squid received the name cephalopod, which means head-foot? What distinguishes the…

A: Hi dear, here's your answer. The name cephalopod, in Greek, means that "head foot." This name was…

Q: Distinguish between ostracoderms and placoderms. What important evolutionary characters first…

A: Vertebrates comprise all species of animals within the subphylum Vertebrata. A vertebrate have a…

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.