Pharyngeal slits are which of the following?   Question 24 options:   a)  Openings in the pharynx.  In aquatic chordates they allow for exit of water that enters the mouth.

Q: What are the problems that vertebrates needed to solve to adapt to the terrestrial environment since…

A: In aquatic medium there are plenty of water, but in terrestrial environment water availability is…

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: If you discovered a fossil hominin that was adapted for both arboreal and bipedal locomotion, had an…

A: Introduction Bipedalism is a type of terrestrial locomotion in which an organism moves by using its…

Q: a. List the characteristics of chordates. What were the circumstances that forced them to evolve…

A: Answer :: a) Chordate is a phylum in animal kingdom which includes Urochordata, Cephalochordata and…

Q: This opening of the gut leads into the subgerminal cavity in amniotes.

A: Amniotes are organisms which are characterized by the presence of three amniotic layers surrounding…

Q: What are three shared features of vertebrates (other than those that are shared because they are…

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

Q: Which arthropod class is the most diversified animal group of the planet? How can this evolutionary…

A: Arthropods have jointed appendages. They are characterized by wings and  3 pairs of legs.

Q: What evidence is there that dinosaurs brooded their eggs and tended their young long after they…

A: Dinosaurs are an assorted gathering of reptiles of the clade Dinosaurian. They initially showed up…

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 are four shared derived characters of chordates?

A: Chordates are the animals with a vertebral column called ‘back bone’. The chordate animals are free…

Q: Urochordates, instead of amphioxus, are now considered the sister group of vertebrates. Why is…

A: Urochordates are monophyletic and belong to Vertebrata. The tadpole larva shows the morphology of…

Q: What characteristics make a pig a chordate?

A: Chordate Chordates belong to the phylum Chordata. During some period of the life cycle of chordates,…

Q: What is the evolutionary relationship of Neanderthals to Homo sapiens?

A: While a modern human who lived about 40,000 years ago was found to have about 6-9 percent…

Q: Which is more closely related to a human, an octopus or tunicate? Explain.

A: The relationship between phylogenetic distance and ecological similarity is key to understanding…

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 feature of ichthyostega would not have improved its ability to move on land? it had an…

A: Vertebrata is a phylum in which the animals have a vertebrae or vertebral column to support the body…

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: Which of the following things is/are true about this organism? has a backbone amniotic egg…

A: The Arctic lamprey, also called as the Japanese river lamprey or Japanese lampern, is a fish that…

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: During chordate evolution, what is the sequence (from earliest to most recent) in which the…

A: To find What is the sequence in which the following structures evolved in chordate evolution?

Q: by comparing and contrasting the physical features of a shark, guitar fish and the sting ray, what…

A: We all know that the largest shark is the whale shark (Rhiniodon typus) with length of 13-39 ft and…

Q: Draw a cladogram for the animals: Amphioxus; Lamprey; an osteostracan( derived ostracoderm); Reef…

A: phylum chordata has dorsal nerve cord, notocord, pharyngeal gill silts, anal tail

Q: Neanderthal anatomy traits include which of the following? O 1. Gracile skeleton, prognathic…

A: Neanderthals are an extinct species or subspecies of archaic humans who lived in Eurasia.

Q: In which ways does the limb orientation of "advanced" tetrapods differ from that of "primitive"…

A: Manus is a term used for hands or and forelimbs.

Q: 30. Class Aves evolved from Jurassic dinosaurs belonging to which of the following chordate groups?…

A: The birds or the aves were cosidered to be evolved fromthe jurassic dinosaurs of clade Therapoda.…

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: How did the following fish groups evolve? a) Agnatha b) Chondrichthyes c) Osteichthyes d)…

A: Although numerous fossil fishes have already been discovered and documented, they only represent a…

Q: How and why did sponges develop skeletons, given that they were the first animals, there were no…

A: Sponges are the simplest form of multi-cellular organisms with structural complexities. They have…

Q: Based on phylogeny and history of evolution, do new anatomical features such as lungs (amphibians)…

A: The study of links between various groups of species and their evolutionary development is known as…

Q: Which is NOT a characteristic of all chordates Group of answer choices phalangeal slits post-anal…

A: A chordate is a member of the Chordata phylum. At some point during their larval or maturity stages,…

Q: Given that modern echinoderms and chordates look nothing alike, what factors have led zoologists to…

A: Echinoderms are animals that belong to the phylum Echinodermata. They are recognized by radial…

Q: Can you answer all the parts to this question regarding the diagram  Hemichordates are a sister…

A: Part a: It has been studied that hemichordates are not classified as true chordates. Although…

Q: An example of peramorphosis would be a____.   salamander that becomes sexually mature while still…

A: Peramorphosis is a process in developmental biology, where the growth/maturation of an animal is…

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: An antorbital fenestra and external mandibular fenestra are synapomorphies of archosaurs true false

A: Need to find whether the given statement is true and not regarding archosaurs.

Q: Amphioxus long has been of interest to zoologists searching for a vertebrate ancestor. Explain why…

A: Amphioxus, also called lancelets, are the marine invertebrate chordates.

Q: Which of the following statements regarding dipnoi (lungfish) is true?     amniotes share a more…

A: Lungfish are freshwater  rhipidistian vertebrates belonging to the order Dipnoi. Lungfish are best…

Q: What does radial symmetry means? What is the type of symmetry found in chordates? Which are other…

A: The animals are the most abundant living organism that is found in almost every habitat. They have…

Q: Which of the following is an example of an animal that has true tissues, has a coelom, is…

A: The organisms of the ecosystem have significant properties. Depending upon the different features of…

Q: Make some observations about archosaurs as a group. What features do they have in common that make…

A: The Archosaur is a subclass that consists of birds and reptiles (the crocodiles) and a few other…

Q: Which one of these is better adapted to life on land - amphibians or reptiles? Explain.

A: Reptiles and amphibians can live on land. But amphibians can also live on water because there…

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: The flexibility inherent in a segmented body plan was clearly important to crustacean evolution, but…

A: Evolution is the change in the heritable characteristics of organisms over successive generations.…

Q: What is the relevance of amphioxus in studying anatomy of vertebrates?

A: The closest living invertebrate relative of vertebrates is the cephalochordate amphioxus…

Q: Hypothetically, if large/medium sized whales had not evolved, how may this have impacted the…

A: * Megalodon is an extinct species of mackerel shark . *It was thought to be member of family…

Q: What characteristics are shared between monotremes and placental mammals but not marsupials? What…

A: under the class Mammalia, vertebrate animals are present. they are subdivided into- monotreme,…

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.