An animal whose development is marked by radial cleavage and enterocoely is ________. a. a deuterostome b. an annelid or mollusk c. either an acoelomate or eucoelomate d. none of the above

Q: A barnacle is a shelled______ . a. arthropod c. cephalopod b. gastropod d. crustacean

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

Q: Reptiles are much more extensively adapted to life on land than amphibians because reptiles a. have…

A: Answer is b.)  lay eggs that are enclosed in shells.

Q: an amniotic egg was crucial to the evolution of vertebrates because it provides the following to the…

A: The amniotic egg was the crucial evolutionary step that allowed the living organisms to breed…

Q: A- The animals above are members of EE Rp A. Echinodermata B. Hemichordata C. Pterobranchia D. A & B…

A: Answer: The animals above are members of - E) B&C. The animals are belong to phylum-…

Q: A major difference between birds and other reptiles is that birdsa. produce a shelled egg. d. care…

A: The group of heterotrophic, multicellular, and eukaryotic organisms that do not show the presence of…

Q: Flatworms can reach a maximum size of around 40cm. Whilst this is big for a worm, there are…

A: Introduction Flatworms or Platyhelminthes are acoelomate, bilaterally symmetrical, soft bodies…

Q: A characteristic unique to most species of mammals and no other vertebrates isa. endothermy.b. skin…

A: The group of multicellular, mostly motile, and heterotrophic organisms is called animals. They lack…

Q: Reptiles (a) are all endotherms (b) are amniotes (c) have a great deal of keratin in their epidermis…

A: Vertebrate includes all species of animals within the vertebrata subphylum. These represent the…

Q: Trochophore larvae are characteristic of (a) arthropods (b) cnidarians (c) flatworms (d) mollusks…

A: Answer is d.)  mollusks.

Q: A marine biologist catches a species of fish she has never seen before. Upon examination, she…

A: Pisces is a class that contains fishes. The members of pisces have two chambered heart with one…

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: In the Paleozoic era, the first vertebrates to live on land were thea. amphibians.b. reptiles.c.…

A: The Paleozoic era is the earliest of three major geologic eras found in geologic periods which…

Q: The ribs form from the ________. a. notochord b. neural plate c. neural tube d. somites

A: The process by which cells of blastula get arranged to form germ layers is called gastrulation. The…

Q: a ECHINODERMATA B b E MOLLUSCA F NEMATODA A CNIDARIA d

A: Metazoa or animals are multicellular eukaryotic organisms that are included in the Animal kingdom.…

Q: Characteristics that evolved in birds to allow for flight includea. reptilian-like scales on the…

A: Bird anatomy has unique adaptations mainly in flight. These are light weighted organisms with very…

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: Which of the following characteristics is/are associated with amphibians? (a) amnion (b) placoid…

A: Answer- Amphibian is a class of animals that are the part of chordates and they are the first…

Q: Flatworms, annelids, and roundworms are all______ . a. arthropods c. protostomes b. aceolomate d.…

A: Vertebrates are organisms which possess backbone. They also possess notochord. Examples includes:…

Q: You find a coelomate animal during a field trip and discover that the embryos undergo spiral…

A: Hi, Thanks For Your Question.  Answer : Correct Option Is D

Q: Unlike bony fishes, amphibians havea. ears. b. jaws. c. a circulatory system.d. a heart.

A: The group of eukaryotic organisms that are heterotrophic and multicellular is called animals. There…

Q: you are dissecting a sea star on the arboral side and you remove the endoskeleton of one arm only,…

A: Sea stars, often known as starfish, are marine invertebrates that belong to the Kingdom Animalia,…

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: Lobe-finned fishes are important because theya. were the first vertebrates.b. were the earliest…

A: Lobe-finned fishes are coelacanths and lungfish have paired fins that comprise an extended fleshy…

Q: defining trait found in chordate embryos

A: Answer: Defining characteristics of chordates: In chordates, four common features appear at some…

Q: Which clade does not include frogs?a. vertebrates b. gnathostomesc. tetrapods d. amniotes e. lobe…

A: A clade is a group of organisms that have a common ancestor. Frogs belong to the amphibians and are…

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

A: The daughter cells are positioned in the grooves of the parent cells in a spiral division. The…

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: 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: Annelids and_______ have a closed circulatory system. a. insects c. flatworms b. cephalopods d. sea…

A: Introduction :- The heart pumps blood into the vessels so that it can reach the tissues and organs…

Q: Embryo above pictured here is a/an O A. blastula O B. gastrula O C. planula O D. zygote

A: Human embryonic development refers to the development of embryo. It involves the process of cell…

Q: Vertebrates and tunicates share(A) jaws adapted for feeding.(B) a high degree of cephalization.(C)…

A: Chordata is the largest phylum of subdivision- Deuterostomia. It was created by Balfour in 1880.…

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: The pericardial cavity forms froma. evagination of the early digestive tract.b. the neural tube.c.…

A: The pericardial cavity has a small amount of serous fluid that helps to reduce lubrication and…

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

A: The term vertebrate is derived from the word vertebrae, which refers to the bones that make up the…

Q: Hagfish, lampreys, sharks, and tuna are all chordates that can also be classified into which group?…

A: All chordates have endoskeleton with a backbone for the support of dorsal nerve cord and muscle…

Q: Which of the following groups of early-diverging animals is comprised of two layers of cells that…

A: Introduction Divergent evolution:- It refers to the process by which interbreeding species diverged…

Q: The oldest body fossils of a land animal are of_____ .a. insects c. cnidariansb. roundworms d.…

A:

Q: explain the meaning of the following characteristics of animals a)triploblastic b)bilateral…

A: Zoology is the part of science that concentrates on the animal kingdom, including the design,…

Q: One of the characteristics unique to animals is(A) gastrulation.(B) multicellularity.(C) sexual…

A: Organisms are open systems that maintain homeostasis, are composed of cells, have a life cycle,…

Q: Living vertebrates can be divided into two majorclades. Select the appropriate pair.(A) the…

A: Chordates are characterised by the presence of notochord. They can be classified into vertebrates…

Q: ______include the only winged invertebrates. a. Cnidarians c. Insects b. Echinoderms d. Crustaceans

A: Introduction :- Invertebrates are animals that do not have or develop a vertebral column, which is…

Q: whihc of the following arthropod regions does not bear legs a) cephalothorax b) abdomen c) all of…

A: Most arthropod's bodies have three sections - the head, the thorax, and the abdomen.    The thorax…

Q: Among living animals, only birds have_____ . a. a cloaca c. feathers b. amniote eggs d. a…

A: Introduction :- The tissue that will become the female fetus's intestinal, genital, and urinary…

Q: 1. Large colonies of polyps belonging to class Anthrozoa secrete hard skeletons of time which later…

A: Introduction  In biology, symmetry refers to the ordered repetition of parts in a living organism.…

Q: The Haversian canal pattern in dinosaurs suggests that they O A. were poikilotherms B. were similar…

A: Haversian canals are the channels found in bones when the cells replaces the bone with new material.…

Marine Evolution

Marine habitat is less explored, and hence, its biological diversity is far less known. The marine habitats are not constant due to their shifting nature, while the terrestrial habitats are more stable. Marine biology is the science that deals with the study of diverse marine species, their interactions, and behavioral characteristics.