What are the major differences between Classes Actinopterygii and Chondrichthyes?

Q: What is marine-exocoetus?

A: The superclass Pisces include the truly jawed vertebrates, which have organs of respiration and…

Q: What are Arachnids ?

A: Phylum Arthropoda has 4 subphyla: Chelicerata (arachnids), Hexapoda (insects), Crustacea…

Q: What does the class Actinopterygii and class Chondrichthyes have in common?

A: Osteichthyes, famously alluded to as the bony fish, is a different scientific classification of fish…

Q: What is the shape of a spider’s chelicerae?

A: Chelicerata, an arthropod group that includes, horseshoe crabs, arachnids, and sea spiders.…

Q: What are the types of reproduction presented by cnidarians?

A: Cniderians:  Cniderians comes under phylum anemalia, which contains both marine and fresh water…

Q: How are freshwater oligochaetes generally different from earthworms?

A: All animals are classified according to their presence of characteristics such as characters,…

Q: What character unites members of clade Gnathifera?

A: There exist different types of organisms that are placed according to the characteristic features…

Q: In what ways are the flatworms more complex than the sponges and coelenterates?

A: Vertebrates and invertebrates are the 2 subdivisions into which all animals can be divided.  The key…

Q: What is the phylum of scoliodon?

A: Introduction  Scoliodons are commonly called as Shark or Dogfish. They come under kingdom animalia.…

Q: What is phylum-echinodermata with its diagram?

A: The phylum Echinodermata belong to the animal kingdom. The members of this phylum have endoskeleton…

Q: What are the phylogenetic relationships among and within each phyla (Mollusca, Annelida, and…

A: Phylum Mollusca, Annelida and Platyhelminthes belong to the kingdom Animalia. Mollusca are second…

Q: What is the most unique or interested aspect about nematodes?

A: Here we describe the most unique or interested aspect of nematodes.

Q: What structural system is unique to the phylum Echinodermata?

A: Echinoderms:              Marine invertebrate animals characterized by a hard, spiny covering or…

Q: Where do Petromyzon and ammocoetes live?

A: Biodiversity is the diversity in living organisms that exists in a particular region or area. It…

Q: Discuss in detail the habitat and habits of Scoliodon?

A: Scoliodon is a genus of sharks that belongs to the family Carcharhinidae. It is also called as…

Q: What features of Lumbricus indicate that it is an annelid?

A: The phylum Annelida consists of worms like the ring worms, earthworms and segmented worms. They have…

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: Difference between pseudocelomates and acoelomates?

A: Coelom is the chief body cavity of animals. It is present inside the body to surround and contain…

Q: What are the classes into which the phylum Echinodermata is divided?

A: Echinoderms are the marine organisms that belong to the kingdom Animalia. They are triploblastic…

Q: Are sponges monophyletic?

A: If a group or taxa shares or occupies the same ancestry or common ancestry that condition in…

Q: What features made it difficult for biologists to recognize echiurans and siboglinids as members of…

A: Annelid is the ancient and ecologically important animal phylum. The members form the dominant…

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 characteristics do Hemichordata share with Echinodermata, and how do the two phyla differ?

A: Introduction  Hemichordate are referred to as Half chordates, they are marine deuterostomes animals.…

Q: What is the difference between Tapeworm and Ring worm?

A: Animals are the multicellular organisms . They are classified as vertebrates and invertebrates on…

Q: What is the scientific name for the gas filled bladder of the giant kelp?

A: There are many different organisms found on the planet. Plants are organisms with eukaryotic cells…

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: What are the synapomorphies of Euphasmastodea?

A: Synapomorphies is an evolutionary terms used to represent the relationship between the different…

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: What is tape worm and its structure?

A: Worms can be divided into several groups, but are still technically decomposers. The first of these,…

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: Match the following groups under Phylum annelida to the following characters: Match each item to a…

A: The phylum annelida comprises worms with body walls covered with a cuticle; chitinous setae are…

Q: What do the following subclasses have in common? Subclass: Elasmobranchii Subclass: Neopterygii

A: The idea and practice of characterizing, identifying, and categorizing living things are commonly…

Q: Draw the structure of orinthorynchus, macropus,pteropus,balenoptera?

A: Step 1 The class mammalian is a group of homoiothermic tetrapod vertebrates which have a covering of…

Q: What is  Amphidiploid?

A: The ploidy of an organism refers to the number of sets of chromosomes present in a cell that also…

Q: What are the criteria that delimit Phylum Echinodermata to its classes?

A: Echinodermata is a phylum belonging to kingdom Animalia. It consists of marine invertebrates which…

Q: How is the biology of onychophorans related to their distribution?

A: Comparative anatomy is the study of the "similarities and dissimilarities" between various objects.…

Q: Chondrichthyes

A: Chondrichthyes or Cartilagenous fishes as they are popularly known are a vast group of aquatic…

Q: Why scoliodon is known as dogfish?

A: The superclass-Pisces includes true fishes. It is the first true jawed vertebrate group. It is…

Q: Give three differences between Petromyzon and ammocoetes?

A: Petromyxon also known as lamprey is a jawless fish. It is a parasite and thus known as parasitic…

Q: What is the ecological importance of coccolithophores?

A: Coccolithophore biomineralization plays a major role in controlling alkalinity & carbonate…

Q: What is phylum-chordata and define its terms?

A: Phylum Chordata includes subphylum Vertebrata (vertebrates) that are the most evolved animals.…

Q: What are the different groups of crustaceans and what organisms are placed in each group?

A: Groups of crustaceans: There are over 50,000 known species of crustaceans divided into a number of…

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: Discuss the systematic position of Scoliodon?

A: Pisces are aquatic, cold-blooded vertebrates that breathe through gills and live in water.…

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.