1. Match the early embryo characteristics with the correct stage of development. Not all choices will be useda. ova (unfertilized egg)d. blastulae. gastrulab. zygote (fertilized egg)c. late cleavage/morulaf. neurulaEmbryo is a hollow ball of cellsEmbryo is a single cell with a fertilization membraneEmbryo is forming a notochordEmbryo is a solid ball of cells

Embryology is a branch of science which deals with the study of embryo development. Embryology helps…

1. Match the early embryo characteristics with the correct stage of development. Not all choices will be used a. ova (unfertilized egg) b. zygote (fertilized egg) d. blastula e. gastrula c. late cleavage/morula f. neurula Embryo is a hollow ball of cells Embryo is a single cell with a fertilization membrane Embryo is forming a notochord Embryo is a solid ball of cells

1. Match the early embryo characteristics with the correct stage of development. Not all choices will be used a. ova (unfertilized egg) b. zygote (fertilized egg) d. blastula e. gastrula c. late cleavage/morula f. neurula Embryo is a hollow ball of cells Embryo is a single cell with a fertilization membrane Embryo is forming a notochord Embryo is a solid ball of cells

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter51: Animal Development

Section: Chapter Questions

Problem 9TYU: An unidentified substance (or substances) released from the developing notochord causes the...

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An unidentified substance (or substances) released from the developing notochord causes the overlying ectoderm to form the neural plate. This phenomenon is known as (a) activation (b) determination (c) induction (d) implantation (e) mosaic development
1 3. Enzymes are important during the process of fertilization. What would be the anticipated consequences if the level of acrosin was low or non-existent in the acrosome? 5. The Sperm would not be able to break through the protective coat on the egg (zona pellucida). meaning the sperm are unable to fertilize anegg 4. The morula contributes to a layer that becomes the embryo and to cells that become the placenta. What are the names of these structures? Illustrate and label these layers/structures. What is the name of the outer cell layer of the blastocyst and what does it give rise to? Does this layer contribute to the development of the embryo? 6. Explain the origins of the blastocyst cavity and what purpose does it serve? 7. Describe implantation of a blastocyst using simple, labeled diagrams.
Gastrulation... A. Is a specialized form of cell division that partitions the cytoplasm of a fertilized egg B. Refers to the fusion of haploid gametes to give a diploid zygote C. Produces an embryo with either two or three distinct cell layers D. Is a developmental stage consisting of a cell layer surrounding a fluid-filled space E. None of the above
During the embryonic period each of the three germ layers gives rise to a number of specific tissues & organs, one of the following statements is not true? O a. The intermediate mesoderm will give rise to the urogenital system. O b. Blood cells & blood vessels arise from the mesoderm. O c. Paraxial mesoderm is divided into small segment (blocks) known as somites. O d. Neurulation is the process by which the neural plate forms the gut tube. O e. In general, the ectoderm gives rise to structures & organs that maintain contact with the outside world. Clear my choice
Match the germ layer on the right with its contribution to the tissues and organs of the embryo, on the left. v connective tissue stroma A. mesoderm v parenchymal cells, e.g., liver B. ectoderm C. mesoderm D. mesoderm E. endoderm F. endoderm vasculature v innervation v epithelium of enteric secretory duct tubes v epithelium of integumentary system G. ectoderm v elastic membrane
1. It is the creation of an offspring by fusion of haploid gametes, male sperm and female eggs, to form a diploid zygote 2. The creation of offspring without the fusion of egg and sperm 3. The development of a new individual from an unfertilized egg 4. The union of egg and sperm, can be external or internal 5. A common opening between the external environment and the digestive, excretory, and reproductive systems in animals. 6. each individual has both male and female reproductive systems 7. Male gonads which produce sperm and testosterone. 8. Three (3) coiled tubes within each testis in which sperm is produced. 9. Tubular storage sac on top of each testis in which sperm mature. 10. The male gamete consists of head, middle piece, and tail. Released during ejaculation.
1. What do you notice to the embryos at their earliest stage? 2. Observe the embryos from their earliest stage to their middle stage. What significant change did you notice from its earliest stage to its middle stage? 3. Observe the embryos from their earliest stage to their advanced stage. What significant change did you notice from their earliest stage to their advanced stage? note: please refer to the pictures below 1st row-earliest stage 2nd row-middle stage 3rd row-advanced stage I need help please, only 1-2 sentence each. Thank you!
The cells of the embryoblast differentiate into the ______ andthe ______.a. epiblast, hypoblastb. cytotrophoblast, syncytiotrophoblastc. amnioblast, epiblastd. epiblast, cytotrophoblast
Of the following processes, which occurs last during embryonic development?a. cleavageb. neurulationc. gastrulationd. fertilization
A preembryo has:- a. A neural tube. b. A heart bulge. c. A cytotrophoblast. d. A coelom. e. decidual cells
1. During oogenesis, oogenetic inhibitors must be deactivated after full growth to allow the a. oogonium to undergo mitosis. b. ootid to transform into a zygote. c. primary oocyte to complete the first meiotic division. d. secondary oocyte to complete the second meiotic division. 2. Which of the following layers protect the mammalian oocyte during ovulation? * a. cortical and hyaline layers. b. vitelline envelope and jelly coat. c. granulosa cells and zona radiata. d. corona radiata and zona pellucida. 3. After ovulation, the following cells are transformed to lutein cells EXCEPT * a. theca cells. b. corona radiata cells. c. cumulus oophorus cells. d. stratum granulosum cells.
A change in the amount of yolk and its distribution in the egg will affect: A Fertilization B Formation of zygote C Pattern of cleavage D Number of blastomeres produced