Urochordates, instead of amphioxus, are now considered the sister group of vertebrates. Why is amphioxus, instead of urochordates, still considered a better model for the early vertebrate body plan?

Q: Mammals are farther removed from echinoderms in phylogenetic alliance as they do with birds. Yet…

A: Birds and Mammals are different from each other in many morphological characters such as body hair,…

Q: CHARACTER/ANIMAL PHARYNGEAL VERTEBRAE PAIRED APPENDAGES MUSCULAR FINS WITH MUSCULAR LIMBS SWIM…

A: Cladogram used to construct to show similarities and differences between organism . It use to…

Q: Create lists of animal phyla that (a) are cephalized, (b) have an incomplete digestive tract, (c)…

A: The phylum is the third grade in the pecking order. Which has the details of the organism properties…

Q: How are the vertebrates related?

A: Vertebrates refers to all the species of animals within the Subphylum Vertebrata. Subphylum…

Q: How Long Might Neanderthals Have Co-Existed withModern Humans (Homo sapiens)?

A: homo sapiens and neanderthals shared common ancestry 0.5 million years ago and somewhere a split…

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

A: Answer. Deuterostomic: The anus of the digestive tract develops first in the embryo and the mouth is…

Q: Tiktaalik and Protarchaeopteryx are examples of transitional forms. In paleontology, what does…

A: Paleontology, usually spelled palaeontology or palaeontology, is the scientific study of life…

Q: Dinosaurs represent one of the oldest groups of animals

A: In this question, we have to explain the dinosaurs belongs one of the oldest group of animals.

Q: According to the current hypothesis, when did most major groups of animals evolve?

A: Evolution is change in the heritable qualities of natural populaces over progressive ages. These…

Q: Explain how cephalization, jaw development, and paired limbs guided vertebrate evolution. Include…

A: Evolution is a slow process of changes in species on the genotypic and phenotypic level that leads…

Q: All vertebrates are chordates but all chordates are not vertebrate? Justify the statement?

A: Chordates are those animals that have rod like notochord.In some chordates, the notochord is…

Q: Name three characteristics that set vertebrates apart from other animals

A: The phylum of vertebrates, which includes Aves, reptiles, amphibians, and mammals, is defined by the…

Q: List the vertebrate groups that have each of the following.a. a skeleton of cartilageb. a…

A: Since you have posted a question with multiple subparts, we will solve the first three subparts for…

Q: What physical traits made scientist  believe that neanderthals adapted to the cold of the Ice Age in…

A: Neanderthals (Homo sapiens neanderthalensis) are the group of humans that emerged during the…

Q: List three characteristics that distinguish Homo sapiens from premodern Homo Homo sapiens have a…

A: Scientific data gathered on human evolution suggests that the physical as well as behavioral…

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: Describe three vertebrate adaptations to terrestrial life.

A: In the late Devonian era, the aquatic vertebrates are adapted to terrestrial vertebrates. This…

Q: how many million years ago did amphibians appear?

A: Amphibians are cold-blooded vertebrate tetrapods. The class amphibia comprises frogs, caecilians,…

Q: Write a short essay proving that vertebrates evolved from a common ancestor.

A: There are many different fields of biology that prove that vertebrates have a common ancestor from…

Q: What group of animals is thought to have moved onto land to become the first amphibians?

A: Frogs, turtles, toads, skinks, and caecilians are all members of the class of cold-blooded…

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: CHARACTER/ANIMAL PHARYNGEAL VERTEBRAE PAIRED SLITS AND SWIM APPENDAGES MUSCULAR SUCKER- FINS WITH…

A: Cladogram is a diagrammatic illustration which represents how the taxons are closely related to each…

Q: Discuss the features of the agnathans, vestiges of the first vertebrates, the jawless fishes.

A: Agnatha is a superclass of jawless fish in the phylum Chordata, subphylum Vertebrata, consisting of…

Q: Which structure classifies an organism as a gnathostome? a lateral line system a mineralized bony…

A: structures which classify gnathostome are Jawed fishes comprising of mostly of 90% living…

Q: Why are echinoderms considered part of the Deuterostomes, despite having incredibly unique…

A: Echinoderms are marine, spiny invertebrates belonging to the phylum Echinodermata, superphylum…

Q: If you discovered a fossil bird with scales on the body & teeth in the beak. What would…

A: Fossils are any preserved remains, impression, or trace of any once-living thing from a past…

Q: having a post-anal tail and gill slits are traits of all embryos belonging to which phylum?

A: Pharyngeal slits are openings in the pharynx that develop into gill arches in the bony fish and into…

Q: Give one example of each of the four Vertebrate Classes, which are grouped under the Amniotes.

A: Sauropsids and synapsids are members of the amniote group of tetrapod animals. They are…

Q: homed dinos roc and erosurs duckb mored sauropods prosauropods other theropods watives theropods…

A: Cladistics is mainly a  process of categorizing the organisms according to their shared traits. This…

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: Which of the following could be considered the most recentcommon ancestor of living tetrapods?(A) a…

A: The term “tetrapods” means “four feet”. The tetrapods are the animals that belong to the superclass…

Q: What are three things a fossil can tell you about an animal?

A: Introduction A fossil is a remnant of a non-living plant or animal that has been preserved or…

Q: In a table, compare and contrast the generalized fish and generalized tetrapod skulls based on the…

A: The skull consists of Chondrocranium which is derived from neural crest cells and mesodermal…

Q: How useful is the study of the nature of body cavity and coelom in theclassification of animals?

A: Animal classification is a system of grouping animals by their similar characteristics. It is also…

Q: List three groups of adaptations that guided vertebrate evolution, and explain how each has…

A: Introduction  Adaptation are the changes in the physical and behavioural characteristics which helps…

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: the animal kingdom was divided into 5 main clades.  Which clade has animals without true tissues

A: Need to find which of the clades lack true tissue. A clade is a group with ancestor and their…

Q: Name three characteristics that set vertebrates apart from other animals

A: Animals are defined as a living organism that will feed on organic matter and will typically have…

Q: Prestosuchus chiniquensis was a predatory animal from the Triassic Period most closely related to…

A: Prestosuchus is a wiped out ( extinct) family of pseudosuchian in the group Loricata, which…

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: Compare and contrast Neanderthals, Cro-Magnon humans, and early humans.

A: Evolution is a long process by which humans evolved from apelike ancestors. Scientific evidence…

Q: CHARACTER/ANIMAL PHARYNGEAL VERTEBRAE PAIRED SWIM APPENDAGES MUSCULAR SUCKER- FINS WITH MUSCULAR…

A:

Q: What is the most probable primitive condition for eutherian (placental) mammals (node C)?

A: Eutherians are differer from noneutherians by various phenotypic traits of the feet, ankles, jaws…

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,…

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…

Q: . SUMMARY OF THE ANIMAL KINGDOM Compare the animal groups by placing the correct number(s) in the…

A: Animals are classified into chordates and non chordates based on the presence or absence of the…

Q: Elaborate about the origin and evolution of earlier vertebrates?

A: Vertebrate is considered a subphylum in the kingdom Animalia, which comprises animals with the…

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.