With evolution and multicellularity in mind, list two characteristics that may have been common to the first animals.

Q: When did animals first appear in thetree of life?

A: Tree of life is the term used to express how life forms has descended from their common ancestor.…

Q: Give typing answer with explanation and conclusion  Which of the following is the reason for…

A: Organs which have lost some or all of their original functions and forms are referred to as…

Q: Fossils suggest that the first major trait distinguishing human primates from other primates was…

A: Fossils are the remains of the ancient animals say bones or these are the impressions of  plant or…

Q: The extinction of dinosaurs left gaps in the early ecosystems on earth. Explain briefly the…

A: Evolution is change in the species over a period of time.

Q: Which of the following events did NOT occur during the Cenozoic?

A: The Cenozoic Era is a geological era that began around 66 million years ago and continues to the…

Q: . When during the history of life did vertebrates evolve?

A: Earliest Vertebrates evolved 550 million years ago.

Q: describe fossil evidence of the earliest multicellular organisms and the earliest animals?

A: The fossils can be defined as the organisms that lived in the past and are not found today. They are…

Q: Explain how vertebrate evolution was led by cephalization, jaw development, and paired limbs. To…

A: The evolution of jaws has had a substantial impact on the evolution of vertebrate history. There is…

Q: Why were breeds of animals developed?

A: Animal breeding can be defined as the process in which mating between desirable animals is done. It…

Q: write a brief history of the First Humans

A: The species that marks the first humans is Homo habilis.  To give a brief history about this species…

Q: hat do scientists think the primitive Earth w

A: Researchers believe that early earth's atmosphere consisted of water vapor , carbon dioxide , carbon…

Q: The dorsal fin of a dolphin (class Mammalia), and the dorsal fin of a shark (class Chondrichthyes),…

A: Anatomical evidence of evolution helps in determine similarity and dissimilarity of recent organic…

Q: hat is Evolution of living things  ?

A: Evolution is a complex process by which the characteristics of living organisms change over many…

Q: In your own words, explain how cephalization, jaw development, and paired limbs guided vertebrate…

A: Vertebrates are group of animal that have vertebrae column (backbone).

Q: Compare and contrast the views of animal evolution based on body plan characteristics to those based…

A: When the anatomical or physical traits are considered for the determination of evolution then the…

Q: Approx how many mass extinction events occurred throughout the evolutionary history of animals

A: Biodiversity is the diversity of biological life forms present in three forms of genetic,…

Q: Provide a brief overview of the history of animal life on earth.

A: BASIC INFORMATION  EVOLUTION The theory of evolution was first given by the Jean Baptist de Lamark.…

Q: Use the information and diagram to answer the following question. Scientists discovered a…

A: Life started in water and hence when life transitted from water to land, there were and still are…

Q: Identify if the structure described is analogous, homologous, derived, or vestigial. When comparing…

A:

Q: Discuss what the fossil record reveals about early animalevolution.

A: Evolution is the branch of science that deals with various characters of an organism compare to…

Q: Which of these steps probably occurred first in the chemical andbiological evolution of life?a. The…

A: All living organisms are made up of organic components like carbohydrates, proteins, lipids, etc.

Q: Match the description with the type of evidence of evolution they belong to. 1. Homologous…

A: Evolution is the change over time. It is the unifying theory of biological science. There are many…

Q: Through which of the following sequences did chemical evolution MOST likely take place? Protobionts,…

A: According to Oparin, coacervate serves as a bridge between loose complex organic molecules and…

Q: Which of the following is an accurate point that supports the idea that the earliest protocells…

A: DNA and RNA are the genetic material present in the cell.

Q: Determine whether the statements describe ancestral or derived characters. Ancestral character a…

A: Characters, also called traits, are certain characteristic features within an organism that can be…

Q: Professor Andrew, a paleontologist discovers a transitional fossil between a stem amniote and…

A: Fossils are the preserved remains or traces of organisms (plants, animals, etc.) from the past.…

Q: Compare and contrast the difference between a prehistoric organism and modern-day organisms. What…

A: Answer

Q: Describe one characteristic you see in organism 3 which might have had an advantage over organism 2.…

A: *Darwin proposed that Fossil records provides evidence that the living organisms has evolved a…

Q: List the three kinds of specific evidence that help us to discover the history of animal life.

A: Evidences that help us to discover history of animal life  1 Anatomy 2 Molecular biology 3…

Q: Does vertebrates evolved from a common ancestor? Exlain your answer.

A: The vertebrates include humans and all other backboned species, as well as a handful that has no…

Q: Name the species of human beings which is most closely related to modern man.

A: Evolution is the process of change in the characteristics of a species over several generations. All…

Q: Use the image to answer the question. If you were to create a phylogenetic tree of these organisms,…

A: The organism lancelet will branch off first because out of 6 characters used to make phylogenetic…

Q: Describe an example from the fossil record that showshow life has changed over time.

A: Evolution is the process of heritable change in the characteristics of an organism. Such changes…

Q: Where on the tree did the amniotic egg evolve? Group of answer choices C A D E B

A: The given tree depicts the evolution of the different chordates as vertebrates, then jawed…

Q: Describe the growth as it appears in the Broth Tube or Agar Slant.

A: Microbes are cultured for scientific and research studies on various media. This enables us to know…

Q: Elaine Morgan makes the case that humans may have an aquatic ancestor in recent evolutionary past.…

A: Thank you for the question  Answer : Elaine Morgan in 1990 wrote a book named Scars of Evolution.In…

Q: Cite and explain the factors that led to an enormous bloom of animal diversity in the Paleozoic era.

A: Paleozoic era began somewhere around 541 million years ago and ended around 252 million years. The…

Q: Imagine if mermaids were real. Make a Cladogram (Evolutionary Origin) showing its closest relative…

A:

Q: List 10 modern-day animals and using the internet resources link it to a corresponding ancient…

A: Animals are multicellular eukaryotic organisms that from the biological kingdom Animalia. With few…

Q: Did dinosaurs and humans ever exist at the same time?

A: Homo habilis, which existed between 2.4 and 1.4 mya in Eastern and Southern Africa, is among the…

Q: How would the evolution of teeth and bones composed of calcite or aragonite, instead of dahllite,…

A: Aragonite and calcite are the two types of calcium carbonate crystals  that form the teeth of some…

Q: Use the image to answer the question. If you were to create a phylogenetic tree of these organisms,…

A: Introduction  A phylogenetic tree, also known as an evolutionary tree, is a diagram that depicts the…

Q: Both nervous and endocrine systems are important in regulating body mechanisms to maintain…

A: Nervous system and endocrine system both are the systems that are mainly responsible for control and…

Q: Explain the colonial theory of animal origins.

A: Animals are thought to have emerged 565 million years ago (Ma) during the Vendian age of the last…

Q: Table 10: Some Important Events in Geologic Time Era Period Triassic Epoch Event Age of Reptiles…

A: * Modern mammals have evolved from preceeding animals . * Formation of modern humans from azoic era…

Animal Diversity

Nematodes are commonly known as roundworms. They are free-living, very tiny organisms. They have an elongated and tubular body. These organisms have a nervous system and are mostly act as parasites to both animals and plants.

Platyhelminthes

Platyhelminthes are also known as "flatworms" because as they are dorsoventrally flattened from head to tail. They are invertebrate, soft-bodied, acoelomate, unsegmented and have bilateral symmetry.