Which is theextraembryonic membranewhose function is to storenitrogen wastes of theembryo? Is this functionpresent in placentalmammalian embryos?

Q: Describe the movement of cells during early development that change an embryo from a blastula to a…

A: To describe: The movement of cells during early development that changes an embryo from a blastula…

Q: What is the chorioallantoismembrane present in theembryonic development ofreptiles and birds? How…

A: The chorioallantois or chorioallantoic membrane abbreviated as CAM is the vascular membrane that is…

Q: Identify the stage(s) of embryonic development in whichcross sections of all chordate embryos…

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

Q: During what process does the amnion envelop theembryo?a. embryonic foldingb. gastrulationc.…

A: The amnion refers to a membrane, which closely envelops the embryo when formed initially. It gets…

Q: How is the mesoderm(third germ layer) oftriploblastic animals formed?

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

Q: Is the mammalianembryonic development director indirect?

A: The process of embryonic development is otherwise known as embryogenesis. Fertilization is the…

Q: Identify the characteristics of protostome development: Select one or more: O spiral cleavage…

A: Protostomes are organisms which shows formation of mouth before formation of anus during embryonic…

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: astrulation, are there any evidences of cephalization? Why or why not?

A: Gastrulation: During gastrulation, cell motions cause the embryo to reorganise massively,…

Q: What is the differencebetween amnion and chorion?

A: Both amnion and chorion are present during a woman’s pregnancy and are part of the extra embryonic…

Q: What is the embryonic sac?Which are the cells that formthe embryonic sac? What aretheir ploidies?

A: The angiosperms are vascular plants that produce flowers and fruits, and they belong to the phylum…

Q: What are the three typesof germ layers that formtissues and organs in animals?

A: The tissue is a group of cells that perform a specific function. Basically a group of cells who…

Q: Spiral cleavage can occur in both deuterostomes and protostomes (True/False)?

A: Deuterostomes are animals in which the anus develops from the blastopore and the mouth develops…

Q: O Blastula Gastrula O Fertilized egg O Unfertilized egg O Morula

A: Introduction:-   The fusion of hapliod gamets ,egg and sperm to form the diploid zygote is called…

Q: Describe the differences between protostome and deuterostome development.

A: Protostomes are organisms whose blastopores develops into a mouth. In comparison, Deuterostomes are…

Q: Indicating the name and respective ploidy of each involved cell how can theformation of egg cells…

A: the formation of egg cells from the germ cells occurs in the ovaries this process is known as…

Q: Why must animals be modifi ed in the embryo stage?

A: In this question, we will discuss the fundamentals of how humans have learned to manipulate genetic…

Q: What is the function of thevitellus in the vertebrate egg?How are these eggs classifiedaccording to…

A: Vertebrates comprise all species of animals within the subphylum Vertebrata. Vertebrates include…

Q: what structure is the pointer pointing to? O Notochord what germ tissues are those structutres made…

A: There are different types of body structures, each specified for a particular function. These…

Q: What are the cells producedin the first stage of theembryonic developmentcalled?

A: The process in which the embryo forms and develops is known as embryonic development.

Q: What is the cell divisionduring the first stage of theembryonic developmentcalled? How is this…

A: The process by which a parent cell divides into two identical daughter cells, is called Cell…

Q: ''In the early cleavage stages, when the embryocannot yet feed, the developmental program is driven…

A: The series of cell divisions that occur in a fertilized egg as it begins t develop into embryo is…

Q: n the ventral surface of the embryo     series of tissue blocks lateral to the neural tube     a…

A: somures eventually differentiate into dermis, skeletal muscle, cartilage, tendons, and vertebrae.

Q: Define chordamesoderm

A: Chordamesoderm is also known as axial mesoderm.

Q: What's the process of gastrulation in humans, how the embryo forms the three germ layers, and which…

A: The inner cell mass which is known as Blastula is now grown into a cell mass known  Gastrula and…

Q: How are animals classifiedaccording to the germ layerspresent in their embryonicdevelopment?

A: Germ layers are developed during embryogenesis. They are programmed to develop specific organs,…

Q: After the blastula stagewhat is the following stage ofthe embryonic development?What is the passage…

A: The process by which the embryo forms and develops is known as embryonic development. It includes…

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: If radial cleavage occurs during development, the animal will be a deuterostome (True/False)?

A: Deuterostome in greek mean second mouth. It make a nephrozoa clade with protostomia clade. they are…

Q: The process of oogenesis is often described as theproduction of a haploid egg by meiosis, but in…

A: Oogenesis is the mechanism of production of the mature female gamete, which occurs in the female…

Q: Are the extraembryonicmembranes the same in allvertebrates?

A: An embryo is an early phase development for an unborn baby. A small fertilized egg divides and grows…

Q: Occasionally, two primitive streaks form in one embryonic disk. Predictthe result. What happens if…

A: Primitive streak : A primitive streak is defined as a transient structure that forms during the 15…

Q: Briefly explain how and why the yolk distribution in mammalian eggs has changed from their…

A: According to Bartleby expert, when multiple questions are posted we are allowed to answer the first…

Q: What is the germ layerfrom which the coelomsoriginate?

A: During embryonic development, three germ layers are formed. They include an outer layer called…

Q: Differentiate Protostomes from Deuterostomes in terms of germ layer formation

A: The most significant difference between protostomes and deuterostomes arises due to the…

Q: Differentiate Protostomes from Deuterostomes in terms of the formation of cleavage

A:

Q: Describe embryonic gastrulation in protostomes vs. Deuterostomes

A: Protostomes:  The clade of animals originally thought to be characterised by the formation of the…

Q: Can the dorsal lip of the blastopore inducecells in another part of the amphibian embryoto change…

A: The dorsal lip of a blastopore is a structure formed during the early development of the embryo. The…

Q: What generalizationscan you make aboutthe location ofmesoderm, whenpresent, during andafter…

A: Embryology is about the study of zygote and embryonic and organ development in plants and animals.…

Q: What is gastrulation? Howduring gastrulation are thefirst two germ layers formed?What are these germ…

A: Reproduction is the process of development of new offspring from the existing organisms. It is of…

Q: What structures carry the egg from the ovaries to the uterus? Are these structures the same in all…

A: Introduction The ovary is a female reproductive organ that produces an egg called an ovum. This goes…

Q: D. Discuss the development interaction between the actoderm and the mesoderm in the evolution of the…

A: Chordates, including vertebrates, evolved within a group of animals called the deuterostomes.…

Q: An early stage embryo consisting of mutiple layers is a blastula O True False

A: In mammals, a blastula is an initial phase of embryonic development.

Q: In amphibian gastrulation, are there any evidences of cephalization? Why or why not? (mi

A: Gastrulation: During gastrulation, cell movements result in a massive reorganization of the embryo…

Q: What is the coelom? Towhich structures do coelomsgive birth? Are all animalscoelomate?

A: The alimentary canal or the gut is the long and coiled tube that extends from mouth to anus. It…

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. What are the cell movements (ex. Epiboly, involution, etc.) involved in human gastrulation?…

A: Gastrulation is the stage in embryogenesis where three germ layers are formed.

Q: How does the embryo turnfrom gastrula into neurula?How is the neural tubeformed? What is…

A: The gestation is period refers to the time during which zygote develops to the foetus. The gestation…

Dissection

Dissection is the process of cutting up the tissue of a dead or live animal or plant, to do anatomical studies and surgical treatments. The purpose of dissection is to learn more about the overall structure of organs and organ systems and thereby understand the physiology of the organism.