Q: What are the advantages and disadvantages of having a Moist, permeable skin in amphibians?
A: ANSWER;- advantages;- Most amphibians have thin skin that is very permeable (allowing fluids and…
Q: Give the literal meaning of the name Gymnophiona. What animals are included in this amphibian order,…
A: Gymnophiona is an order species which comes under class amphibian, which in turn comes under phylum…
Q: What is notochord?
A: Notochord is a rod that extends through the chordate organisms.
Q: Along the notochord, segmented blocks of tissue that give rise to muscles, vertebrae, and connective…
A: Answer is d.) somites.
Q: What is the significance of the notochord?
A: Chordates includes all animals containing a vertebrate or a backbone. Two groups of the…
Q: Animals in the phylum Mollusca exhibit (choose the correct answer) Question 7 options:…
A: The phylum Mollusca is the second-largest animal phylum. The molluscs include many familiar animals,…
Q: What genetic changes led to the increasing complexity of the arthropod body plan?
A: Answer- Arthropods are among the most adapted phyla on the planet. There are many factors…
Q: What does metamorphosis mean
A: Metamorphosis involves the reactivation of the genes allowing the cells to change from one type to…
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: How do reptile eggs differ from amphibian eggs? Why is this important?
A: The egg is the female reproductive unit and it is produced by the oogenesis process. It is haploid…
Q: QUESTION 13 What is the most probable primitive condition for marsupial mammals (node D)? a. Claws…
A: Introduction Marsupials are any members of the mammalian infraclass Marsupialia. Premature birth…
Q: Aegyptopithecus has features in common with modern monkeys, such as limbs of equal length with…
A: Humans are different from other animals in phylogeny in many characteristics such as bipedalism, the…
Q: Question: Placental mammals are characterized by their ability to lay eggs. True or False?
A: Mammals have an advanced reproductive system and parental care ability. The following are the…
Q: How does the amoeboid movement occur? What are examples of beings and cells that use such movements…
A: Amoeboid movement is the movement exhibited by amoeba.
Q: The ribs form from the ________. a. notochord b. neural plate c. neural tube d. somites
A: The process by which cells of blastula get arranged to form germ layers is called gastrulation. The…
Q: QUESTION 11 What is the most probable primitive condition for all mammals (node B)? Claws O Nails…
A: Marsupials include all the groups of mammals under metatherians that nourish the young one inside…
Q: What are the roles of Hox genes in the development of Nervous System
A: Hox genes are the genetic switches that are involved in turning on and turning off other genes as…
Q: During embryonic development, a neural crest would be found in all of the following chordates,…
A: Neural crest is a population of migratory cells which arise from the epithelial cells. It develops…
Q: Are insect wings considered appendages? Why or why not?
A: Insects are the most diverse organisms on the planet. They occupy land, air, and water. They belong…
Q: Discuss how starfish have radial symmetry but yet contain ganglia is due to their ancestors? 2. What…
A: Starfishes belong to kingdom Animalia. Starfishes are placed under the group called Echinoderms…
Q: Which of these parts is an embryonic midline structure common to all members of the phylum Chordata…
A: Notochord is an embryonic midline structure common to all members of the phylum chordata and plays…
Q: Arthropods usually have a distinct head. How would you define a “head”? What are the advantages and…
A: Arthropods are the large invertebrate group. Insects, millipedes, shrimps, centipedes, and, crabs…
Q: How did the vertebrate appendage evolve into the limbs we find so useful today?
A: The tetrapods consist of the a pair of forelimb and a pair of Hindlimb and these are supported by…
Q: How did evolution ever lead ostriches to hide their head in the sand when an enemy approaches?
A: *Before evolution takes place Ostriches doesn't hide their head in the sand and when approached by…
Q: What do invertebrates have in common?
A: Organisms are open systems that maintain homeostasis, are composed of cells, have a life cycle,…
Q: The formation of the neural plate is induced by the ….? Group of answer choices a. notochord b.…
A: The neural plate that has formed as a thickened plate from the ectoderm, which is induced by the…
Q: Pharyngeal slits are which of the following? Question 24 options: a) Openings in the…
A: Pharyngeal slit are opening in the pharynx that extend to the outside environment. In organisms that…
Q: QUESTION 3 Which of the following is NOTa characteristic of all chordates? O Bilateral symmetry O…
A: Chordates is the phylum which consists of large group of animals including vertebrates, lancelot…
Q: Question 9 The first spinal nerve of the frog innervates the shoulder and forelimbs. Question 10…
A: All of the body's voluntary and involuntary activities, such as smell, hearing, sight, and movement,…
Q: Why was the medusa stage lost in some cnidarians? Do you think it is more advantageous
A: Solution : In the phylum Cnidaria, which includes jellyfish and sea anemones, polyp and medusa are…
Q: What refers to a digestive tract that is specialized with an anterior region to mix and churn food…
A: Digestion is the process by which complex food particles break down into simple food particles by…
Q: extra-embryonic
A: An extraembryonic membrane is one in every one of the membranes which assist within the…
Q: Question 25 Which structure is homologous to a bat's wing? butterfly wing beetle antennae fish tail…
A: Homology: Homology is defined as the common similarity of the structures or genes in different…
Q: "Back to Basics: Cnidarians Start to Fire"
A: Cnidarian, additionally called coelenterate, any individual from the phylum Cnidaria (Coelenterata),…
Q: What are the general characteristics of amphibians?
A: Amphibians are a class of phylum Chordata that live both on land and in water.
Q: Which combination of characteristics is typical of the development of a deuterostome? .... Question…
A: Triploblastic and diploblastic stages are two distinct types of blastula stages. The major…
Q: What is metamorphosis?
A: The amphibians and the amniotes eventually evolved from the early tetrapods. Amphibians undergo…
Q: Based on an evolutionary perspective, do you think the present forms of cnidarians are the best…
A: Cnidarians are diploblastic organisms , they have organized tissue level, and digestion is…
Q: What changes in egg design allowed reptiles to lay egg on land?
A: The theory of evolution by natural selection suggests that due to the dissimilarities in their…
Q: What are the general characteristics of reptiles?
A: These were the first class of organisms to adapt to life on land. They are believed to have evolved…
Q: ANSWER BOTH QUESTION! #1. Discussed area vitellina #2. Is the primitive stalk still present? Why or…
A: The part of the yolk sac that does not yet contain mesoderm cells is known as the area vitellina.…
Q: QUESTION 21 Which answer is not a trait associated with primates? 1. Stereoscopic vision O2.…
A: Primates are group of animal that are mammals which includes monkey, apes, chimpanzees, lemurs and…
Q: QUESTION 1: What are the four distinguishing features of chordates?
A: Ans- The presence of a post-anal tail, a notochord, a dorsal, hollow nerve cord, and pharyngeal…
Q: What are the three major events in the evolutionary history of insects? For each event, suggest one…
A: Insects are the most successful life form in 450 million year history of terrestrial life.
Q: The dorsal hollow nerve cord is which of the following? Question 25 options: a) A hollow…
A: The dorsal nerve cord is a unique ganglia embryonic trait. It is a hollow dorsal cord made up of a…
Q: What does Singer think is more valuable, a human embryo or the life of an ape? How does he justify…
A: Peter singer is a prominent australian philosopher currently at princeton university who many…
Q: What is the notochord?How is this structure formed?
A: Embryology is about the study of zygote and embryonic and organ development in plants and animals.…
Q: What are the similarities and differences between insects that go through com- plete metamorphosis…
A: The vast majority of people are acquainted with complete metamorphosis in childhood as a butterfly…
Q: (i)In which part of the world, Neanderthal man lived?(ii)What was his brains capacity?(iii)Mention…
A: Neanderthals or Homo neanderthalensis are an extinct subspecies of the archaic humans. They lived…
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- What is the function of the notochord? What organisms possess notochords throughout their lives and what organisms have notochords but degenerate in their early development?QUESTION 6: What are the general characteristics of reptiles?QUESTION 15 Which type of cleavage leads to the development of a bird? O Discoidal cleavage Holoblastic cleavage Radial cleavage O Superficial cleavage O None of the above.
- What is the adult fate of notochord? Discuss.What is notochord?An additional notochord is grafted next to the developing neural tube. Answer the following questions. (a) what new cells would you expect to develop in the region of the neural tube closest to the graft? (b) What is the notochord-derived molecule that is responsible for the effect?
- Wouldn't the presence of myomeres in vertebrates be neither symplesiomorphic no synapomorphic when we look at the group alone? Aren't symplesiomorphic and syapomorphic terms used in comparison to the features of other organisms?Which of the following is an INCORRECT statement? Question 6 options: a) The early embryo of a higher animal is never like a lower animal, but only like its early embryo. b) During the first three stages of development, blastomeres become smaller by way of each embryonic cleavage. c) The space inside of the neural tube will eventually become the space inside of the digestive system. d) A zygote results from the union of sperm and egg.Which of the following structures of a mammalian embryo can be used to produce embryonic stem cells by simple maintenance in culture? (Check all that apply.) A Epiblast Primitive endoderm Trophectoderm Blastocoel Inner cell mass
