Annelids have (a): a. pseudocoelom. b. true coelom. c. no coelom. d. none of the above

Q: A zoologist is investigating an unidentified marine animal specimen. They note that this creature…

A: These properties of the symmetry of the found specimen are: Radial Symmetry along the short axis…

Q: A defining feature of the Ecdysozoa is aa. segmented body.b. closed circulatory system.c. cuticle.d.…

A: The Ecdysozoa is a group of protostome animals that belong to the arthropod, Nematoda, and several…

Q: The two phyla in the Deuterostomia are a. Arthropoda and Nematoda. b. Brachiopoda and…

A: The Deuterostoma is one of the major groups, a superphylum in the animal kingdom. They belong to…

Q: sexual reproduction in cnidarians may be carried out by which body form? A. Medusa or polyp   B.…

A: The creation of a copy of something, a copy of something, or the act of sexual intercourse to create…

Q: Animal having a coelom gives the advantage of: O a. It allows more efficient sense organs. O b. It…

A: A fluid-filled hollow cavity present in many living organisms is called coelom. It functions as a…

Q: Which of the following is most closely related to lobsters and what characteristics are significant…

A: Lobsters are a group of crustaceans which are commercially important because they are consumed as…

Q: Echinoderms have _____ symmetry as embryos and _____ symmetry as adults. a. radial; radial c.…

A: The group of eukaryotic, multicellular, and heterotrophic organisms is classified under the kingdom…

Q: The nervous system of the Hydra is _______ _______ while the flatworm’s is ________ _________.…

A: Introduction In terms of biology, symmetry is referred to as the repetition of parts in animals or…

Q: Feeding rosettes can be observed on the surface of the sediment and are formed by Group of answer…

A: It is a multiple choice question.

Q: Which of the following group of animals belongs to the same taxon? a.Obelia, Physalia, Sycon b.Sea…

A: Chondrichthyes is a class of vertebrates. They have a cartilaginous skeleton and true jaws.

Q: Which of the following groups includes all of the others? a. Protostomes c. Eumetazoans b.…

A: Taxonomy is that the observe of distinguishing completely different organisms, classifying them into…

Q: Gills are found ina. fish.b. marine arthropods.c. mollusks.d. All of the above

A: Gills in fish are located on both sides of the pharynx, they help them to breathe underwater.

Q: A deuterostome has what type of cleavage Group of answer choices A. spiral, indeterminate at 8…

A: Deuterostomes class include echinoderms, chordates etc.

Q: Provide the (1) description and (2) adaptive significance of the following developmental and body…

A: A set of characteristics shared by a group of phylogenetically related animals at some stage during…

Q: Which of the following has a complete digestive system? a. tapeworms c. cnidarians b. sponges d.…

A: Digestive system is one of the systems in the body which carries out digestion. Digestion is the…

Q: Which of the ff. has a repugnatorial gland and coils into a ball when disturbed? A. Diplopod B.…

A: Various species under the arthropoda phylum are classified under Myriapoda. These possess multiple…

Q: Corals belong to which of the following? a. comb jellies b. rotifers c. sponges d. None of these are…

A: Kingdom Animalia contains all animals. It is the largest kingdom of Animalia as compared to other…

Q: The larval stage of a cnidarian is known as a a. medusa. b. planula. c. polyp. d. cnidocyte.

A: Non-chordates are the life forms that do not have any backbone or notochord in their structure.…

Q: I need the answer as soon as possible

A: BASIC INFORMATION  ANIMAL KINGDOM  It is among one of the five kingdom classified by R.H. Whittaker.…

Q: Bivalves, cephalopods, and gastropods are alla. arthropods.b. lophophorans.c. cnidarians.d.…

A: Animal Kingdom is a diverse group, including organisms ranging from non-motile simple sponges to…

Q: Sponge archeocytes can differentiate into A. eggs (oocytes) B. sperm C. choanocytes…

A: Sponges are organised at a cellular level. They don't have any features that may be classified as…

Q: Which of the following structures is not a component of the watervascular system of an echinoderm?…

A: The group of multicellular and heterotrophic organisms belonging to the kingdom Animalia is called…

Q: The presence of a bony skeleton, an operculum, and a swim bladder areall defining characteristics…

A: The Myxini have a partial cranium (skull) and skeleton is composed of cartilage. The Lampreys lack…

Q: In terms of numbers of species, the most successful phylum on the planet is the a. Mollusca. b.…

A: All classes of organisms with the same body structures are grouped under phylum. The animal kingdom…

Q: Gills are found in a. fish. b. amphibians. c. aquatic invertebrates. d. All of the choices…

A: Gills are respiratory structures with a high surface area that allow the aquatic organisms to…

Q: You are confronted with two creatures that, on first glance, both appear to be pill bugs. Upon…

A: An isopod crustacean belongs to phylum arthropoda with the exoskeleton made of chitin and joined…

Q: You read a research article presentsing new phylogenetic data demonstrating that species that…

A: Answer- Correct option is (A) Evolution of the pseudocoelom occurred more than once.

Q: Torsion is a unique characteristic of the a. bivalves. b. gastropods. c. chitons. d.…

A: Every group of organisms has some special characteristics that make them unique from others.…

Q: Which group of crustaceans has all of these attributes: - sessile, strongly attached to substrates…

A: Introduction Any member of the Crustacea subphylum (phylum Arthropoda), a collection of invertebrate…

Q: All of these animals catch plankton with feathery things except A. Phoronid B. Ribbon worm C. …

A: A diverse group of organisms present in water that is carried by tides and currents is referred to…

Q: Both cartilaginous and bony fishes have_ a. jaws d. a swim bladder b. a bony skeleton e. a…

A: The name vertebrate comes from the Latin word vertebrae, which refers to the spine's bones. Animals…

Q: 1. Which of the following justifies the expansion of the allantois in shelled amniotes? * a. It…

A: The allantois is a respiratory organ that also functions as a reservoir for excreta. These…

Q: Which can be found in both the anterior and posterior regions of a nematode?    a. None among the…

A: Phasmids are present in lateral region. Sensory papillae are present on dorsal as well as ventral…

Q: The ____and_____ are grouped as Ecdysozoabecause they both molt.a. cnidarians/arthropods c.…

A: As they mature, all members of Ecdysozoa superphylum molt or lose their cuticle. They secrete a…

Q: Members of which of the following classes are examples of vertebrate animals that are not amniotes?…

A: Vertebrate animals can be grouped into two categories based on the presence or absence of certain…

Q: ou find a flatworm during a field trip and discover that the embryos undergo spiral cleavage. What…

A: While the cleavage pattern has remained remarkably consistent among taxa, it has undergone numerous…

Q: Members of Chondrichthyes differ from members of Osteichthyes by having (a) ________. a. jaw b. bony…

A: Fishes are divided into three classes:- 1) CRANIATES that are jawless fishes. 2) GNATHOSTOMES that…

Q: Animal having a coelom gives the advantage of: O a. It allows more efficient sense organs. O b. It…

A: The study of biology that deals with the structure, function, evolutionary classification and…

Q: Pharyngeal gills of enteropneust hemichordates and chordates are A. involved in filter feeding B.…

A: Hemichordates belong to an unique phylum of marine invertebrates that mostly filter feed by their…

Q: Which structure(s) occur ONLY in chordata? (check all of which are true) A. Notochord B. Dorsal…

A: Chordates are phylum of animal kingdom which is bilaterally symmetrical consisting of organ level of…

Q: You are confronted with two worms that, on first glance, appear to be very similar. Upon closer…

A: Introduction :- An earthworm is a type of worm that belongs to the phylum Annelida. They are…

Animal Phylogeny

Cladistics is a method of biological classification where organisms are classified based on their ancestors and their relationship with them. It is defined as the concepts and methods for determining the branching patterns of evolution and evolutionary history. Some scientists, however, have preferred the term phylogenetic systematics or phylogenetic taxonomy to emphasize the reliance on a phylogeny for classification. It is the most common and accepted method for classifying organisms.