Which of these characteristics best promoted the survival of offspring in reptiles, birds, and mammals? A the amniotic egg B claws C two pairs of appendages D The ability to keep a constant internal environment

Q: Birds are supposed to be the dinosaurs' closest relatives. List and explain five reasons why the…

A: Feathers, toothless beaked jaws, the laying of hard-shelled eggs, a rapid metabolic rate, a…

Q: Using analogy / comparative method, describe what the first hominin who moved out of the trees and…

A: * Modern humans originated from Africa and evolved from recent common ancestor, Homo erectus. *It…

Q: Which of the following characteristics evolved independently in mammals and birds? bone endothermy…

A: Mammals are a group of vertebrate animals constituting the class Mammalia and characterized by the…

Q: A swim bladder is a gas-filled sac that helps fish maintainbuoyancy. The evolution of the swim…

A: Introduction Fishes lives in aquatic environment where there is low availability of Oxygen in water.…

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: Humans have a coccyx at the end of the vertebral column. What structure common to all vertebrate…

A: The coccyx is a triangular structure of bones near the bottom of the backbone, just below the…

Q: Which of the derived traits came into existence before the bony shell? b) List all the derived…

A: Genetics, the study of heredity generally and of genes particularly. genetic science usually…

Q: Here is a similar pair of lists, dealing with a later phase of human evolution. Choose the correct…

A: Human evolution is the evolutionary process lying in the history of primates that led to the…

Q: he australopiths differed from the common chimpanzee in: a   the number of different kinds of teeth…

A: We are answering first question for rest kindly repost

Q: Chordates are named for having this generalized structure. A. Spinal cord B. Stomochord C. Notochord…

A: The chordates is an advanced group in the animal kingdom. The chordates include cyclostome,…

Q: The bones in the front fins of whales and the bones in the human arm evolved from a common ancestor…

A: Answer- (A) homologous structures. Homologous structures are the physical features of the organisms…

Q: Compared to eutherians, marsupial placentas are more highly developed. o marsupial nipples are…

A: Marsupials and Eutherians all have evolved from ancient mammals. Regarding their method for bearing…

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: defining trait found in chordate embryos

A: Answer: Defining characteristics of chordates: In chordates, four common features appear at some…

Q: How did Neanderthals interact with animals? O They were limited to scavenging animal carcasses that…

A: Neanderthals are a hominin species. They existed throughout the regions of Europe and western Asia.…

Q: What term should we use to describe the evolution of body types in the Anole lizards?

A: A change in the characteristics of species over several generations to adapt to environmental change…

Q: In what chronological order did the following traits evolve? a) First the mesoderm, second the…

A: The correct option is C First the amnion, second the mesoderm, third the notochord and fourth…

Q: Suggest a probable selective advantage of each of the following traits. a)clear wings of many…

A: If a particular trait is beneficial in an organism, then the trait goes through positive selection.…

Q: Name and describe at least six features of culture found in locations where Neandertals lived.…

A: Neandertals (Homo neanderthalensis) are the closest extinct relatives of the present day humans…

Q: Unlike eutherians, both monotremes and marsupials(A) lack nipples.(B) have some embryonic…

A: Mammals are warm blooded, have hairs and mammary glands. They are homoiothermous. In the skin oil…

Q: Unlike Archaeopteryx, modern birds have_______ . a. a long bony tail c. a two-chambered heart b. a…

A: The oldest known fossil bird is Archaeopteryx, which dates from the late Jurassic period. It…

Q: Explain how larger Horns in the males of dung beetles could have evolved?

A: The dung bettles are the type of beetles that feed on the dung and the faeces.  The male has a horn…

Q: The earliest-diverging gnathostomes (jawed vertebrates) were fish. Which one of the following…

A: Jaws, in fishes, are developed from the pharyngeal arches, which play a major role in protection of…

Q: Basilosaurus was a fully aquatic ancient whale species that had vestigial _____________________…

A: Basilosaurus belongs to kingdom animal, phylum Chordata, class Mammalia, order artiodactyla, family…

Q: Was the parental care of a dinosaur more like that of a lizard or that of a crocodile? Explain.

A: Parental care is described as a phenomenon that includes incubation of eggs during the early days of…

Q: ater and begai ng the land, there were plenty of advantages in doing so:. reduced competition,…

A: When the earth was going through a cooling process, the aquatic animals were only lived. But, after…

Q: What is the best evidence that Monotremes are a transitional taxon between reptiles and other…

A: Monotremes contain only five species, they are the platypus and four species of echidna. They are…

Q: Which of the following is NOT a characteristic of all reptiles?      A Use lungs and skin for…

A: Reptiles are four legged organisms which form an intermediate group between mammals and amphibians.

Q: Fingers and toes would be an ancestral feature in land vertebrates. A) True B False

A: Vertebrates include all kind of animal species which contains backbone.

Q: Which of the following is responsible for the early predominant image of Neanderthals as brutish…

A: Paleoanthropology is a subfield of anthropology which is the study of human society, culture, and…

Q: Which of the following describes the blastula development in frogs or anurans? Select the correct…

A: In  frogs , the cleavage is Holoblastic and unequal division with the mesolecithal egg .Here the…

Q: At which stage of embryonic development does the embryo have a blastopore?   Group of answer choices…

A: Embryogenesis is the development embryo which starts with the fertilization of egg cell with a…

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: A member of the protostome group of animals   a. has no symmetry.   b. has an anus derived from…

A: Protostome: are the group of animals, which include the arthropods, and other mollusks and worms and…

Q: Match the benefit to the correct chordate adaptation. (match each number to the correct letter)…

A: Evolution is a continuous process and we are still evolving. Evolution is nothing but adapting to…

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

A: All living organisms that are eukaryotic, multicellular species belong to the animal kingdom that is…

Q: At which of the following stages of development is a frog embryo composed of the most cells? Group…

A: The different stages of development in a frog are: Zygote→Morula→Blastula→Gastrulation begins→Embryo

Q: Discuss the adaptations of lower chordates to survival

A: All three organisms are lower chordates, meaning they possess a notochord, a dorsal hollow nerve…

Q: The first primates evolved from (a) shrewlike monotremes (b) therapsids (c) shrewlike placental…

A: Humans are classified as part of the Tribe Hominini, which includes modern-day Homo sapiens as well…

Q: In order to use Table 1 to properly name Amphibian C, information regarding which of the following…

A: Dichotomous key is a crucial method to identify various species of animals or plants in taxonomic…

Q: Describe how paedomorphosis as a mechanism could explain the evolution of the chordate body plan…

A: Explanation: Paedomorphosis is a mechanism that can explain the evolution of the chordate body plan.…

Q: fossil bird salamander 2. This fossil bird and this living salamander both have tails. However, they…

A: The fossil bird has a very short tail made of just one bone that helps it have a light skeleton for…

Q: Which of the following statements is correct for all amniotes?   A. They have internal…

A: They include reptiles, birds and mammals. They have three membranes amnion, chorion and allantois…

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: Which of the following does not distinguish humans from other primates?  a. We are the only…

A: INTRODUCTION Primates Primates are a group of eutherian mammals and they belong to the order…

Q: Mammals belong to a group of amniotes known as synapsids. Three major lineages of mammals had…

A: Mammals These organisms belong to the amniotes in which the embryo grow within protective…

Q: Question: The development of amniote eggs allowed animals to move away from water.   True or False

A: Cells are the basic units of life and based on the cellular composition and complexity living…

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: It is thought that jaws, which are found in the higher vertebrates, evolved from: a. progressive…

A: Introduction :- A cartilaginous or bony gill arch supports each gill. The gills of vertebrates…