The fossil cephalopod has a calcareous shell and a squid-like body that would extend out of the large opening in the shell. What function(s) do you think the shell might serve?

Q: Describe the evolutionary changes that had to occur to go from a Osteichthyes to a mammal. What were…

A: Evolution is a phenomenon that occurs in the environment as a result of hereditary changes and…

Q: Scientists who study forms of marine life that lived more than200 million years ago usually obtain…

A: Scientists who study forms of marine life that lived more than 200 million years ago usually obtain…

Q: what percentage of sea turtles were around during the jurassic period?

A: Introduction : Geological time scale gives a picture of the events which has taken place in the…

Q: Amniotes are descended most closely from which of the following groups O reptiliomorphs O…

A: Amniotes is the clade used to include tetrapod animals like reptiles, birds and mammals. They lay…

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 do you think geologists would find in the rock record as evidence of human life today million…

A: Millions of years later, layers of sediment will get compacted into rock such as sandstones,…

Q: cartilaginous endoskeleton while others possess bony endoskeleton?

A: Endoskeletons have evolved to suit their owner’s lifestyle. Bird bones, for instance, are full of…

Q: modern organism is most closely related, evolutionarily, to the Megalodon.

A: Megalodon is no longer living; it died out about 3.5 million years ago. Megalodon (Carcharocles…

Q: Compare the origin and function of reptile scales, bird feathers, and mammal hair. How are they…

A: Phylum Chordata/vertebrates involves multicellular organisms that have an internal skeleton, with…

Q: What does metamorphosis mean

A: Metamorphosis involves the reactivation of the genes allowing the cells to change from one type to…

Q: Protostomes- which animals are typical and what do these words mean? 1. Acoelomate 2. Pseudocoemate…

A: The word "protostome" comes from the Greek words "proto," meaning "first," and "stoma," meaning…

Q: Which class of tetrapod animals famously experienced an adaptive radiation into previously unused…

A: The oldest near-complete tetrapod fossils, Acanthostega and Ichthyostega, date from the second half…

Q: Acrocanthosaurus what is physical description compare to tyrannosaur rex differences of shape, size…

A:

Q: What kind of fossils were formed out of dinosaur remains and activities? Why do you say so? (Give…

A: Dinosaurs lived many million years ago and they turned into fossils when they are dead. Almost 99%…

Q: The large central opening in the poriferan body is called the _____. a. emmule b. picule c. stia d.…

A: The term biodiversity refers to the diverse variety of life present on the earth. As biodiversity…

Q: For about how many years of geological time have the dinosours existed on earth?? Did dinosours…

A: Geological time scale divided the prehistoric earth into four eras based on the the environmental…

Q: Would scientist 2 more likely expect to find bones that have growth rings in a crocodile or a modern…

A: Paleontologists have looked at growth rings in dinosaur bones for years. The theory behind these…

Q: Discuss the idea that every evolutionary adaptation has both advantages and disadvantages, using…

A: Cephalization is the development of ahead, where the sensory organs and the brain are organized.…

Q: Some people state that the dinosaurs have not “gone extinct,” they are with us today. What evidence…

A: According to many evolutionists, dinosaurs are not really extinct but are rather feeding at our bird…

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: Which of the following is an example of evolution co-opting a ready-made structure for another use?…

A: Some scientists like Darwin believe that evolution is a occurred through a series of small, gradual…

Q: Evolutionarily protochordates may be intermediate animals between invertebrates and vertebrates.…

A: The Echinoderms belong to the phylum Echinodermata. They possess radial symmetry and inhabit the…

Q: Imagine you come across an animal with soft body and shell. How can you determine whether it is a…

A: Scaphopods- are molluscs that occur in shallow and deep oceans. Gastropods- Are diverse groups of…

Q: Discuss: How old are the oldest camel fossils shown? How has the skull changed over time? How have…

A: Evolution is the gradual change in forms of life throughout the world. Plants, animals, microbes all…

Q: For centuries, scientists classified sponges as plants, but now they are classified as animals. What…

A: Animals are classified based on their characteristics. Taxonomy is the science that is used to…

Q: Your age-dating put the age of the rocks you are examining in the early Devonian period. Because of…

A: A phylogeny is a hypothetical relationship between groups of animals that are represented by a…

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

A: Tetrapods are the four limbed structure.And these limbs have derived from fins.The limbs of all…

Q: According to the fossil record, what did the common ancestors of all tetrapods (four-limbed animals)…

A: Modern day tetrapods includes including whales, lizards, humans, and birds, and a number of other…

Q: Scientists used to think that all dinosaurs were large and slow-moving. Which discovery overturned…

A: Fossils of pterosaurs confirmed that these reptiles had hollow bone and wings: One of the most…

Q: What does APODA mean? O A. Without true bone B. Without jaws C. Without teeth. O D. Without legs E.…

A: The term poda is used as a suffix in the name of the class of organisms that have limbs or legs.…

Q: why is a scaly anteater, a mammal even though its body is covered with scales? explain in scientific…

A: Ans- Scaly anteater is also known as pangolins and they are the only mammals that is wholly covered…

Q: The Humans That Lived Before Us, which of the following is not associated with the Fossil remains…

A: 'Lucy' was the most famous discoveries found in Unearthed, at Hadar Ethiopia in 1974. She (Lucy) was…

Q: AN adaptive scenario for how lungs evolved in the tetrapod ancestor?? use the swim bladder to help…

A: Lungs are the central respiratory organ in the body. Oxygen is required for regular energy…

Q: why do prehistoric remains consist of almost inclusively of bones and teeth?

A: It is generally found that the prehistoric times mainly comprise of harder body parts like bones and…

Q: Prehistoric remains of animals consist almost exclusively of bones and teeth. Why?

A: It is generally found that the prehistoric times mainly comprise of harder body parts like bones and…

Q: You are a Triassic dinosaur. Which of the following would you have been able to do?

A: The Triassic period was a time of enhancement of land plants in which ferns were transcendent…

Q: Geology and the Geological Time Chart. Using the Geological Time Chart. answer the following…

A: During the evolution, various species gets diversified, some species develop certain characters…

Q: Archaeopteryx is a significant fossil find because it gave hints to the evolution of the following…

A: Fossils refer to remains or traces of past life preserved through natural processes. Imprints,…

Q: What is the possible reason why some cnidarians had evolved to a stony skeleton? plz include…

A: Cnidarians belong to Kingdom Animalia. They are also called coelenterates belonging to phylum…

Q: What valuable information can an archaeologist gain from understanding the connections between…

A: Archeology gives us the chance to find about past culture through the investigation of artifacts,…

Q: Acrocanthosaurus what is physical description compare to tyrannosaur rex differences of shape, size…

A: Acrocanthosaurus In Greek this means "high-spined lizard". It was a very large theropod which…

Q: During what era did pangs begin to break up

A: During what era did pangs begin to break up? Answer. B. Triassic

Q: Which statement best explains why Lystrosaurus fossils are found on these two continents?

A: A fossil is any preserved traces, impression, or residue of a once-living thing from a previous…

Q: How is the skeleton of a sea urchin like the skeleton of a lobster? How is it different?    Sea…

A: The multicellular heterotrophic eukaryotic organism without a cell wall are grouped into kingdom…

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: What do fossil tetrapods tell us about the transition from water to land?

A: The animals that have 4 limbs are known as tetrapods and constitute the superclass Tetrapoda which…

Q: Hardosaurs like edmontosaur the front feet do they have name or description how they look? It looks…

A: The comb-crested hadrosaurid (duck-billed) dinosaur Edmontosaurus regalis is a species of…

Q: What does the image say about the bones in the fins of fish (on the left side) when compared to the…

A: Tetrapods evolved from a finned organism that lived in the water.  The common ancestor of all those…

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.