What derived characters do sharks and tuna share? Whatfeatures distinguish tuna from sharks?

Q: What is the relationship among tunicates, lancelets, and the vertebrate chordates?

A: Chordates are animals that contain backbone or notochord. Animals that lack the notochord or…

Q: What is a jawless vertebrate-petromyzon with its structure?

A: Jawless fishes are otherwise known as "Agnatha" and it is a superclass of the phylum Chordata. These…

Q: Describe the major evolutionary innovations that distinguish the fishes from the amphibians.

A: Amphibians are a group of animals that can live on land or in water. They are said to be developed…

Q: Do these animals share any structural similarities inside their wings that would suggest they are…

A: The analogous structures are found in the organisms that have evolved through different paths. There…

Q: What is the select advantage of the evolution of the jaw in dogfish shark?

A: The dogfish shark or spiny dogfish is the species of the Squalidae family of sharks, which is a part…

Q: What are two defining characteristics of mammals?

A: Answer- Mammals are the most advance group of organisms present on the earth. They comes under…

Q: Which group of unikonts is structurally and genetically most similar to animals?

A: Unikonta is a supergroup which includes a range of protists along with animals and fungi. It is the…

Q: In what ways do the genera Australopithecus and Homo differ?

A: Genetic evidence showed that about 7-10 million years ago, humans were evolved from chimpanzees. The…

Q: Describe structural and functional adaptations that appeared in early amniotes that foreshadowed the…

A: Amniotes include organisms, whose egg is covered by a membrane called amnion. Amnions include…

Q: What is meant by homologous structures? What is meant by serial homology, and how do crustaceans…

A: The structures present in different organisms which are anatomically similar but functionally…

Q: In the phylogenetic tree above Sharks are most closely related to which other taxa? 6) Which…

A: Visual representation of the relationship between different organisms, showing the path through…

Q: What type of evolution explains the similarity in penguins, dolphin, and shark fin similarity?

A: The process of slow and gradual change over a period of time is called evolution. Organic evolution…

Q: What are the three maingroups into which mammalsare divided?

A: Mammals are vertebrate animals that constitute the class Mammalia. They are characterized by the…

Q: What evidence suggests that four-legged animals came from fish?

A: Evolution is a slow process which explains that how the species changes with time to survive in…

Q: Why are the lung fish considered to have a common ancestor with amphibians

A: Rhipidistian freshwater fish belonging to the Dipnoi subclass are lungfish. Lungfish are best…

Q: What is meant by a “kinetic” skull and what benefit does it confer? How are snakes able to eat large…

A: In addition to movement at the joint between the upper and lower jaw, cranial kinesis is the term…

Q: What are four key defining characteristics of chordates?

A: Phylum Chordata is the third largest phylum. The animals belonging to this phylum are called…

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: 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: How can true seals be differentiated from the eared seals (sea lions and fur seals)?

A: BASIC INFORMATION SEALS  Their scientific name is Pinnipedia. There are around thirty- three species…

Q: Describe how lobsters, crayfish and are similar?

A: Taxonomy is a branch of science involved with classification, particularly of organisms;systematics.…

Q: Give the difference between frog and shark regarding the external characters?

A: The animals that bear notochord in any stage of their lifetime belong to chordates. Both frog and…

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: What are the characterstics of mammals?

A: A chordate is a phylum which contains vertebrates like mammals, birds and some fishes and also…

Q: What is a primate?

A: Cell is a basic structural and functional unit of all life forms. All organisms are made of at least…

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: Explain the evolutionary relationship between the fin of a fish and the flipper of a whale.

A:

Q: How are marine reptiles and marine birds similar?

A: Reptiles and birds are known to reside on land, but over time they have developed specific traits…

Q: Name two structures found in the gut of shark but not of frog ?

A: Digestion in shark takes place by digesting the food into a semi-liquid chyme.

Q: Give differences between shark and frog regarding eye and ear?

A: Sharks are aquatic animals that belong to the cartilaginous category of class Pisces. The frogs are…

Q: identify at least5 homologous structures between sharks and pigeons

A: Homologous structures  Structures that are structurally similar but have different functions.

Q: Sharks are chordates that possess which of the following Group of answer choices jaws an air sac…

A: Chordata has a place in the Kingdom Animalia and incorporates every one of the vertebrates, i.e.,…

Q: Which well-known group is ancestral to all living birds? What evidence in the fossil record supports…

A: Fossils are the prime pieces of evidence of evolution. It includes the remnants or impressions of…

Q: What is the currently favored explanation for the evolution of vertebrate jaws?

A: The jawless vertebrates belong to the subphylum Vertebrata under the section Agnatha. The…

Q: What are the characteristics of a female mud crab ( Scylla serrate) on its mouth (Buccal) Frame?

A: The scientific name of the mud crab is Scylla Serrata. It is found in mangroves. Generally, a mud…

Q: What similarities are present in birds and reptiles in terms of their external features?

A: Birds are parrot, owl, penquinn, albatross,  Swift and many more whereas some of the examples of…

Q: How do Weberian ossicles increase a fish’s sensitivity to sounds?

A: Fishes are defined as the aquatic vertebrates that have gills and appendages in the form of fins.…

Q: How do you explain the significance of digestive adaptations for flight in flightless birds?

A: Birds have a strong, but a lightweight framework of bones. This is achieved by the fusion and…

Q: What are the typicalfeatures of mammals?

A: Vertebrates have spinal cord which remain surrounded by bone or cartilage. Mammals are vertebrate…

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: If members of a group, such as chordates , evolved from a common ancestor then they should show…

A: The oldest discovered fossil of chordate is Pikaia gracilens belonging to cephalochordate. It is…

Q: Describe how lobsters, crayfish and shrimp are similar?

A: The science of classifying and naming organisms, plants and animals based on their morphology,…

Q: What types of molecular and morphological changes occurred along the different branches that led to…

A: Answer: Introduction: Tetrapods (means four limbs) evolved from a group of animals called as the…

Q: Make a cladogram that includes the following groups of fishes: chon-drosteans, elasmobranchs,…

A: The cladogram is a diagrammatic relationship between species. But it didn’t represent an…

Q: Are bird wings and the wings of bats (evolved from limbs) an example of an evolutionary homology or…

A: Homology means the organs that are evolved from the same point of origin but have evolved different…

Q: What made microraptor a unique feathered dinosaur?

A: In its ecosystem, Microraptor was one of the most abundant non-avialan dinosaurs, and the genus is…

Q: Craniata includes animals within Chordata that have a skull.   True or False?

A: Animals can be grouped into chordates and non-chordates. The chordates have a backbone or notochord.…

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.