What is a body structure that is found in Bony fish but not in Cartilaginous fish?   Teeth Gills Paired fins Operculum Scales

Q: What are the features that result in tunicate’s being classified as an animal, chordate and…

A: Urochordata are also known as tunicates because outer body of tunicates is covered by tunic which is…

Q: Which of the following are shared-derived* characteristics of the species found within the Genus…

A: Shared derived characters among Genus Paranthropus.

Q: Lampreys Sharks Lungfish Amphibians Land vertebrates Tetrapoda Choanata Fingers and toes What is the…

A: The above diagram is called phylogenetic tree. Phylogenetic tree show the evolutionary relationship…

Q: Amphioxus does not possess a vertebral column? yes or no?

A: Amphioxus  They are also known as lanceolate and belonging to the group of invertebrate animals.

Q: One difference between the 'fishapod', Tikaalik, and the early tetrapod, Acanthostega, is... Group…

A: Tetrapod development began approximately 400 million years ago in the Devonian Period, with the…

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: This is a basal gnathostome more closely related to bony fishes O Dunkleosteus O Geotria O…

A: Gnathostomes meaning “jaw-mouths” are vertebrate organisms possessing jaws. The jaw development was…

Q: How different are the swimming strategies in osteichthyes and in chondrichthyes? Why do sharks need…

A: The Chondrichthyes include rays, sharks, and skates that have a cartilaginous skeleton with calcium…

Q: Which of the following list places the important evolutionary innovations in the correct order of…

A: A phylogeny example is the evolutionary tree of organism demonstrating the history of animal organs.…

Q: What is the only difference between a fish and tetrapod

A: The change in the heritable characteristics of the species across many generations is called…

Q: What structures did amphibians develop to support the weight of the body against the force of…

A: Amphibians, as their name indicates, are class of organisms that  have adaptations suited for both…

Q: Define about Fishes: Evolution of the Jaw ?

A: An aquatic vertebrate that bears gills for respiration and lacks limbs with digits is called fishes.…

Q: Edmontosaur or hardosaurs what ways can they defend itself from predators like large with powerful…

A: INTRODUCTION Endmontosaurs They are large dinosaurs lived in North America during late Cretaceous…

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: 1. Jawless fish (modern) 2. Cartilaginous fish 3. Bony fish 4. Amphibians 5. Reptiles 6. Birds 7.…

A: As mentioned that you need answers 5 and 6. Vertebrates are animals that have rod-shaped vertebral…

Q: Are the chelicerae of horseshoe crabs homologous or analogous to (1) scorpion pedipalps? (2)…

A: Horseshoe crabs are present in the cephalothorax region. It has walking legs which are the modified…

Q: What external anatomical features of amphibians are associated with their dual life on land and in…

A: The word amphibian is a Greek word “amphi” and “bio”. “amphi” means dual or both kinds and “bio,”…

Q: The following image is from a scientific publication by paleontologist Niel Shubin, who was part of…

A: Homologous structures such as organs or bones are the structures which posses similar anatomical…

Q: What is/are the major comparison(s) between the tunicates and bony fish?Are tunicates inverterbrate…

A: Tunicates are marine invertebrates that belong to the Tunicata subphylum. They are members of the…

Q: Threespine sticklebacks that invaded freshwater lakes have lost their pelvic spines. What other…

A: Threespine sticklebacks (Gasterosteus aculeatus) are commonly found in the ocean. They are…

Q: Osteostracans are not included in the Gnathostome clade because

A: Why are the Osteostracans not included in the Gnathostome clade?  Ans : They lack true bone…

Q: Ray-finned fish Rodents & rabbits Crocodiles Birds Sharks Amphibians Primates Hair Eggs with shelle…

A: The phylogeny tree is given in the image. It depicts the relationship between the taxons present in…

Q: Which of the following is NOT an axial skeleton in the frog? urostyle mandible sternum ribs

A: Introduction:- The axial skeleton is comprised of the 80 bones that make up the body's central core.…

Q: Which of the following structures are homologous in arthropods? 1st leg of horseshoe crab: 1st…

A: The arm of a human, the wing of a bird or a bat the leg of a dog and the flipper of a dolphin or…

Q: What common features do all reptiles share

A:

Q: Which of the following are the defining features of animals that belong to the phylum chordata?…

A: Kingdom Animalia has some specific characteristics like motility, multicellularity, the requirement…

Q: Describe three important differences between the skeletons of the crayfish and the pig.

A: SOME BASIC INFORMATION  SKELETON  It is a structure which is formed by bones  It basically forms the…

Q: Compare the body plan of Dugesia and cnidarians. Aside from differences in symmetry, what other…

A: Thank you for the question  Answer :Dugesia belong to phylum Platyhelminths.  The features seen in…

Q: What are two noticeable morphological differences between the sharks and ray-fin fishes? What is the…

A: Step 1 Chondrocytes or cartilaginous fishes are a small group of mostly marine and predaceous fishes…

Q: what are the advantages and disadvantages of carapace and plastron in turtles

A: Turtles belong to the Testudines family of reptiles, which are distinguished by a shell made…

Q: Describe the structural differences between the pleopods and the pereiopods up the prawn. What…

A: Pereiopods are primarily walking legs and are also used for gathering food.They are also the ten…

Q: list the functiond of the mandibles, maxillae, and maxillipeds in crayfish

A:

Q: Which of the following is NOT a defining chordate characteristic? O post-anal tail O vertebrae O…

A: Introduction Chordates belong to the kingdom Animalia. They are group of animals which include…

Q: How does Anterior posterior axis gives chordate and higher non chordates a bilateral symmetry

A: Organisms having bilateral symmetry have a single plane of symmetry. The plane is called sagittal…

Q: what type of scales do bony fish and Lancets have?

A: Lancet fish, both of two types of broadly dispersed, deepwater marine fish of the class Alepisaurus…

Q: Petromyzon marinus body shape skin texture body division? head buccal funnel soft papillae or lip…

A: Petromyzon marinus, commonly known as sea lamprey belongs to the phylum Chordata. The species belong…

Q: There are two types of chordates the invertebrates and the vertebrates. How do invertebrate…

A: The scientific classification of animals begin in the late 18th century. At that time , animals for…

Q: Hardosaurs like edmontosaur the front feet do they have name or description how they look? It looks…

A: The comb-crested hadrosaurid (duck-billed) dinosaur Edmontosaurus regalis is a species of…

Q: What is present on the feet of birds which provides more evidence for their evolution from reptiles…

A: Archaeopteryx lithographica is one of the first birds that is considered as the missing link between…

Q: Explain How will you compare and contrast the skeleton of fish

A: The embryos of modern fish and tetrapod look similar . Both modern fish and tetrapod are vertebrates…

Q: Compared to the skulls of ancestral sarcopterygians and modern lungfish the skulls of Acanthostega…

A: The skull is a bone structure that forms the head in vertebrates.

Q: Sessile adult tunicates lose the notochord; what does this suggest about one function of this…

A: A tunicate larva has the notochord, nerve cord, and tail. After few days of swimming after hatching,…

Q: What type of body symmetry does this creature have?

A: The correct Answer is Option D . Bilateral Symmetry .

Q: What would be present in Spongebob's poriferan skeleton? Specify the chemical composition as well as…

A: The SpongeBobs poriferan Skeletal  structure  are containing spicules and spongin fibres. Skeleton…

Q: Why is the internal shell of Cephalopods significant to their adaptation?

A: Cephalopods have huge, advanced brains, and their brain-to-weight proportion is the biggest among…

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: All of the following are derived characters of chordates at least some time in their life EXCEPT…

A: Chordates are the class of organisms that belongs to the phylum chordata. It is a type of phylum…

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.