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

Q: three examples of species of cnidarians

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

Q: When and how did sponges develop their skeletons?

A: The ancient sponge appeared about 2.5 millions years ago  the first animal . Coming in many sizes…

Q: Explain the ecological importance of copepods to marine and freshwater ecosystems.

A: The members of phylum Arthropoda are collectively referred to as arthropods. Segmented body, 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: How can the features of the arthropod exoskeleton explain the terrestrial adaptation of some species…

A: The phylum Arthropoda is characterized by the presence of jointed legs, a segmented body, and an…

Q: What is the main evolutionary innovation presented by nematodes? What is the advantage of that…

A: Nematodes are bilaterally symmetrical, elongated organisms which play a vital ecological roles as…

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: 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: 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: compare cnidarians to sponges and to the clade containing flatworms, mollusks, and annelids. What…

A: RH Whittaker gave the five-kingdom classification of living organisms. He used several factors to…

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: Which class of tetrapod animals famously experienced an adaptive radiation into previously unused…

A: The oldest near-complete tetrapod fossils, Acanthostega and Ichthyostega, date from the second half…

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: When did the Ediacarans live, and what were they like?

A: The Ediacaran organisms lived during the Precambrian supereon approximately 543 to 600 million years…

Q: Make a concept map about Subphylum Myriapoda and its classes (Chilopoda, Diplopoda, Pauropoda,…

A: Insects, spiders, crustaceans, and their relatives make up this huge phylum of invertebrate…

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: 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 is the group of the phylum Chordata that first colonized the terrestrial environment? From…

A: Chordates have the following characteristics- Notochord ventral nerve cord pharyngeal gill slits…

Q: How sponges are different from other animals ?

A: Sponges are members of the phylum Porifera which are stationary, channel taking care of marine or…

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: 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: Can fossils bridge the evolutionary gap between fish and tetrapod vertebrates?

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

Q: In what important ways did invertebrate life change between Ordovician time and Devonian time?

A: Evolution is a process of slow and gradual change over a period of time. There are many different…

Q: The phylum Nematoda is protostome or Deuterostome ?

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

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 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: Why do some biologists think that the apicomplexans descended from dinoflagellates?

A: The finding of a nonphotosynthetic plastid in malaria and other apicomplexan pathogens has prompted…

Q: What is the possible reason why some cnidarians had evolved to a stony skeleton? plz include…

A: Cnidarians belong to Kingdom Animalia. They are also called coelenterates belonging to phylum…

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: 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: Most sponge species are of leuconoid construction, is this type of sponge construction an advantage…

A: Sponges are the members of phylum Porifera. The Latin name of this phylum is derived from the high…

Q: Cnidarians and ctenophores are considered diploblastic, but why might some biologists label them…

A: The process of embryonic development is characterized by the formation of the primary layers called…

Q: Phylum Echinodermata: 1. Briefly describe the general body plan of these animals by stating: a) the…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: What does radial symmetry means? What is the type of symmetry found in chordates? Which are other…

A: The animals are the most abundant living organism that is found in almost every habitat. They have…

Q: What are the reasons, why kelps are somehow limited to cold waters?

A: Kelps are large brown algae seaweeds that make up the order Laminariales. Thus it is photosynthetic.…

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 makes sponges (poriferans) different from other animals?

A: SPONGES They are the member of phylum porifera. They are multicellular organisms having body full of…

Q: What are benthoic animals?

A: The animals are eukaryotic and multicellular organisms.

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: What is the reason for saying that sponges are closely related to, and probably evolved from,…

A: Sponges, which belong to the phylum Porifera, are a sister group to the Diploblasts and are a…

Q: How abundant are archaeons in the oceans?

A: Archaea is a separate domain of unicellular organisms. These organisms do not have nuclei in their…

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 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: provide an example of homologous traits shared by most tetropods.

A: Tetrapods involve a group of organisms that have four limbs or they're descended from tetrapod…

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…

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.