Branchial arches of the shark support the gill  pouches and each one consists of five cartilagous element. Arrange the elements  belowfrom dorsal to ventral: hypobrancial, ceratobranchial, epibranchial, pharyngobranchial and basibranchial

Q: What is the evolutionary significance of the fifth gill arch of bony fish no longer supporting a…

A: The vast majority of vertebrates belong to the Osteichthyes superclass of bony fishes. Bony…

Q: Name the specialized feeding structure of vertebrata

A: The classification of animals is done based on the presence of the spinal cord and backbone. The two…

Q: The cirripedia are used for the purpose of grindng food particles prior to their entry to the…

A: It is an arthropod belonging to the infraclass Cirripedia of the subphylum Crustacea. It is related…

Q: Amniotes are descended most closely from which of the following groups O reptiliomorphs O…

A: Amniotes is the clade used to include tetrapod animals like reptiles, birds and mammals. They lay…

Q: In what way do teleosts and other fish benefit from having a bony operculum?   it prevents water…

A: An operculum is a hard and bony flap-like structure It covers the gills of teleosts and other bony…

Q: why do we study exoskeletal structure and external anatomy of vertebrates?

A: Vertebrates belong to the subphylum vertebrata of the phylum chordata. There names are mainly…

Q: Which feature is found only in gnathostomes?     both pelvic and pectoral fins or appendages…

A: Gnathostomes are those organism who have jaws in their body. It includes two groups: Pisces: It…

Q: Refer to the figure of a burrowing annelid. In segment 3 the muscles are maximally contracted and…

A: Refer to the figure of a burrowing annelid. In segment 3 the Circular muscles are maximally…

Q: What is the differencebetween octopuses andmussels regarding theircirculatory systems? Howdoes that…

A: Octopoda is part of the Cephalopoda class which means that pulp is cephalopod.  Cephalopoda is a…

Q: What feature separates the Chondrichthyans (sharks and rays) from the lobed-finned fishes? O some…

A: The class Chondrichthyes has two subclasses: the subclass Elasmobranchii (sharks, beams, skates, and…

Q: Fish Skeleton: Label the structures from the manual: 2 = 5 = 9 = 11 = 12 = 13 = 17 = 21 = 23 = 24 =…

A: Labelling 2) Pectoral girdle 5) Pelvic girdle 9) Branchial 11) Dentary 12) low jaw bone 13)…

Q: How does the swim bladder varies in different aquatic environments?

A: The swim bladder or air bladder is an internal gas filled organ that contributes to the ability to…

Q: To enlist: The three functions of the water-vascular system of echinoderms.

A: The water vascular system of echinoderms is essentially a system of fluid-filled canals that extends…

Q: Which anatomical and physiological characteristics are commonly found in terrestrial, but not…

A: When anuran's enter from aquatic environment to terrestrial environment several physiological and…

Q: Which of the following are jawless? Choose all that apply. O hagfish O lampreys O bony fishes O…

A: Jawless organisms are belongs usually to class Agnatha and primitive in nature.

Q: What feature(s) separates a shark from a ray-finned fish?

A: Sharks are elasmobranch fish with a cartilaginous skeleton, five to seven gill slits on the sides of…

Q: Nimravids Skeleton vs Siberian Tiger Skeleton vs Smilodon Necator Skelton Compare and contrast the…

A: Nimravids are a group of extinct carnivorous mammals that lived from the Eocene to the Miocene epoch…

Q: Describe the functions of the structures of the sharks. What is the feeding strategy of the shark,…

A: There are almost 500 species of sharks in the ocean. Mostly all songs are having a similar kind of…

Q: Compare the features of the sea urchin and sea cucumber to each other and to the starfish. Do all…

A: Sea urchins are echinoderms that are typically spiny, globular animals, belonging to the class…

Q: Give the structure of eye or ear of lizard?

A: Lizards are reptiles which are belongs to the order Squamata. These are scaly-skinned reptiles which…

Q: Very few fossils of Sahelanthropus have been found up until now, therefore we do not have a complete…

A: The study of ancient hominin species is a fascinating endeavor that often relies on the recovery and…

Q: Endoskeletons of skates, rays, and sharks are made up mostly of:

A: Endoskeleton An endoskeleton is located within the body's interior; it furnishes structural support…

Q: We discussed the four primary.components of animals' body plans. Describe an echinoderm in terms of…

A: Echinoderms are the class of animal species which belongs to the Phylum Echinodermata  and these…

Q: Describe how the leg structure of the crayfish is modified to compensate for the limited motion of a…

A: Crayfish: The clade Astacidea, which also includes lobsters, includes crayfish, which are freshwater…

Q: LANCETS BONY FISH CARTILAGENOUS FISH FINS (types, number) SCALES (types) GILLS (present/absent)…

A: Distinctive characteristics between lancelets, bony fish and cartilaginous fish are as followed

Q: Starfish Aboral Side Describe the functions of the observed structures and compare the morphology…

A: The taxonomical classification of organisms gives a vivid account of the features of the organisms…

Q: Compared to amphibianswhat is an example ofevolutionary novelty presentin beings of the class…

A: Amphibians are the organisms that live on both land and water. The adult amphibians use both lungs…

Q: In 1798, a stuffed platypus specimen was delivered tothe British Museum. Reports that it laid eggs…

A: Amniotes are described as the vertebrates that have a tendnecy to develop embryo in the amnion.…

Q: Give at least 10 exoskeletons found in animals, source, its description and state their embryonic…

A: Exoskeleton animals, often referred to as exoskeletal animals or arthropods, are a variety of…