n the ventral surface of the embryo     series of tissue blocks lateral to the neural tube     a shared derived feature seen only in gnathostomes     one pair forms the pectoral girdle and the other forms the pelvic girdle

Q: 48-hour Chick Embryo Transverse Sections

A: 48 hour is the stage in which position of embryo considering with respect to the yolk changes…

Q: Which phase of development does blastopore form Cleaveage Organogenesis Blastulation/blastula…

A: Gastrulation  is the phase of development in which blastopore form Cleaveage. Blastopore is a…

Q: Draw and label the parts of the late neurula embryos of Amphioxus/echinoderm, amphibian,…

A: Adenohypophysis Endostyle Notochord Nascent somite Neurenteric Canal Pronephric Kidney

Q: Give the differences between mammalian and frog oogenesis. OOGENESIS MAMMAL FROG 1.     2.     3.…

A: The difference between the mammalian and amphibian (frog) oogenesis are as follows:

Q: !) Consider the Spemann-Mangold organizer in amphibian development. Which of the -llowing statements…

A: The spemann-Mangold organizer helps in amphibian development.

Q: Why does the dispersion or contraction stage of the developmental cycle assume a complex character

A: Family development is a notional methodology for the orientation of the research and set an abstract…

Q: Which if the following is true about the cleavage of Tunicates? Choose all possible answers…

A: Tunicates Tunicates are the invertebrate chordates, These are also known as Ascidians, these are…

Q: oogenesis.

A: oogenesis -In the human female reproductive system, growth process in which the primary…

Q: Compare and contrast embryogenesis and morphogenensis and Outline the difference of somatic…

A: Embryo  Embryo is the developing young one of multicellular organisms.

Q: List and describe the phases of embryonic development; from a zygote through gastrulation.  What…

A: Reproduction is the process of the formation of offspring from their parents. There are two modes of…

Q: Which of the following rows correctly identifies the development of the germ layers? Select one:…

A: The germ layers are an embryonic collection of cells that aid in the creation and development of…

Q: 44- need help with following. please be specifiy about answer

A: Zygote is proudced by the fusion of male gamete (sperm) and female gamete (egg).

Q: Why are sea urchins have external fertilization? What are the adaptive advantages of external…

A: Sea urchins are significant herbivores on coral reefs, & in certain environments they assume a…

Q: In mammals, distinguish and differentiate the following germinal layers. Identify the organs that…

A: Introduction :- Mesoderm interacts with endoderm and ectoderm during organogenesis to give rise to…

Q: Match the germ layer to its derivative Neural tube V [ Choose ] Ectoderm Endoderm Mesoderm…

A: Cells of Germ layers grow and divide to produce different parts /organs of body of an organism.

Q: When the embryo is implanted, what developmental stage this be? cleavage fetus blastula gastrula

A: Sexual reproduction in humans includes a fusion of sperms and eggs to form a zygote.

Q: Briefly discuss the important events occurring during gastrulation and neurulation in avian…

A: Gastrulation is a process during embryo development where the zygote undergoes cleavage and forms a…

Q: Which of the following statements about gastrulation is correct? A. During gastrulation, the…

A: The embryonic development after 15 days of fertilization marks gastrulation.

Q: Draw an egg in its blastula stage and label the parts. What are its distinguishing charcteristics…

A:

Q: Which of the following occurs to the blastocoel during Xenopus development?     is replaced by the…

A: Xenopus It refers to the genus of highly aquatic frogs that are mostly found in the regions of…

Q: What is "ecdysis"? O The outermost covering of an ovum that undergoes external fertilization. O A…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: O Occurs in protostomes and involves mesodermal tissue that is located in the space between the…

A: Ans- Occurs in protostomes and involves mesodermal tissue that is located in the space between the…

Q: Give the function/purpose of the following terms: germ layers ectoderm mesoderm

A: Introduction :  After implantation of the embryo into the uterus, the embryo differentiates into…

Q: Which of the following best describes the cloaca in nonmammalian adult vertebrates? O It is a…

A: Vertebrata is a phylum in which the animals have a vertebrae or vertebral column to support the body…

Q: A A Mesoderm Ectoderm Endoderm In the above diagram, there is an opening that has appeared on the…

A: Developmental biology is the study of the process by which organisms grow and develop.

Q: A) The correct order of chronological order of developmental events is a. 1.cleavage 2.…

A: Since you have asked two questions, we would be answering only the first. Post the second question…

Q: You separate the blastomeres of a four-cell animal embryo and discover that each cell| develops into…

A: The cleavage is the cell division pattern in early developmental phases. It is slightly different…

Q: Put “disappear”, if they disappear in the process of development and put the word “dissolved”, if…

A: Introduction Embryonic development is also called embryogenesis. It is the process where development…

Q: In identifying the marginal cells of the tunicate embryo, which of the following is the role of the…

A: The seas squirts are examples of tunicates which are a type of invertebrates found in Marine…

Q: Among the germ layers and developmental structures below: What is/are the FORMED ANATOMICAL…

A: Introduction Embryonic development is also called embryogenesis. It is the process where development…

Q: ''Because of the many later developmental trans-formations that produce the elaborately structured…

A: The germ layers develop early in embryonic life, through the process of gastrulation. Triploblastic…

Q: Illustrate an egg in early cleavage, distinguish this stage from thise that follow (2,4,8 cell…

A: In developmental biology, several stages are there which determines the development of the fetus…

Q: What are the differences between unfertilized and fertilized egg?

A: As per our honor code, we are authorized to answer one question at a time, since you have not…

Q: From which of the following is the embryo developed? Trophoblasts Inner cell mass Blastocoelen…

A: Embryo is formed from the  zygote and zygote is formed by the union of the male and female gametes.…

Q: In the provided image (whole mount of 33-hour chick embryo), color the respective germ layers and…

A:

Q: How are the oral and anal cavities differentiated in the intact, adult earthworm? The anal cavity…

A: Earthworm is an invertebrate. They are tubular, macroscopic organisms belonging to the phylum…

Q: morphogenetic process whereby cells extend themselves, making the cells narrower and longer…

A: Hi, Thanks For Your Question.  A morphogenetic process whereby cells extend themselves, making the…

Q: Which statement does NOT accurately describe somites?   series of tissue blocks   form the ribs and…

A: Embryology is the study of development and growth of fertilized egg(zygote) into mature embryo. The…

Q: Fill in the blank:  _________________ fluid protects the embryo from jarred movements and provides a…

A: Reproduction is a property shown by living organism in which one organism (parent) gives rise to new…

Q: Which statement relating to frog gastrulation is INCORRECT? a. A second set of bottle cells…

A: Embryonic development refers to the division in zygote and growth that ultimately goes through…

Q: n the early stages of amphibian development, what layer is involved in yolk digestion? What is the…

A: Embryonic development proceeds through these stages - cleavage, blastula, gastrulation, and…

Q: In the blanks below, identify the essential developmental process (NOT developmental stage)…

A: The every organism's embryo undergo the different developmental stages so that all the structures…

Q: uterostome development? elect one: O A. The mouth develops from the blastopore O B. Solid masses of…

A: Protostomes and deuterostomes are the two major divisions of animals. The fundamental distinction…

Q: Trace the pathway of the ova of the female frog from the place of production up to the place of…

A: Introduction:- The ovaries produce the female egg cells, called the ova or oocytes. The oocytes are…

Q: State the differences of the frog and human embryology.

A: Embryology is the branch of science that deals with the embryo and the embryonic development. Frogs…

Q: e membrane

A: answer 1 ) Layer 1: The tympanic film is the grown-up structure that outcomes from the primary…

Q: To what extent has mesoderm migrated in the blastoderm of the 24 hour chick embryo

A: After twenty-one days of incubation, a chick emerges from a fertile egg. On the surface of the yolk,…

Q: A: Why do sea urchins have external fertilization? [Discuss the life style of the developing sea…

A: Introduction: We’ll answer the first question since the exact one wasn’t specified. Please submit a…

Q: Which of the following is not true about frogs eggs and blastula formation? Choose all possible…

A: In the blastula stage of development , a blastula contains large yolk filled cells at the vegetal…

Q: Explain: Is the degenerating blastocoel visible in the frog gastrula? How much yolk protrudes…

A: Introduction :- In early mammalian embryos, a blastocoel is a chamber that is filled with fluids,…