Q: Which of the following cell layers is not necessary to be considered a eumetazoan? a. Ectoderm…
A: Eumetazoans are the animals which are characterized by the presence of true tissues organized into…
Q: In a developing human, the first organ to form is thea. heart.b. brain.c. notochord.d. liver.
A: Answer- The organs starts to develop from the first month of the pregnancy in the humans.
Q: How are mammalian extraembryonic membranes formed?
A: The layers encircling the embryo inside the uterus are known as extraembryonic membranes. The…
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: prepare sketches Eight-cell sea urchin embryo
A: Step 1 Phylum Echinodermata is of spiny skinned, triploblastic, enterocoelomic, deuterostomic…
Q: Name two structures derived from each of the three embryonic tissue layers: endoderm, ectoderm, and…
A: Two structures derived from each of three embryonic tissue layers are : Endoderm gives rise to…
Q: oogenesis.
A: oogenesis -In the human female reproductive system, growth process in which the primary…
Q: The inner cell mass of a human blastocysta. gives rise to the chorion.b. gives rise to the…
A: Cell is the basic unit of life. Based on the number of cells an organism may be prokaryotic or…
Q: What are some advantages of the pronounced cephalization that occurred as vertebrates evolved from…
A: Answer- Animals are adapted and evolved so that they can survive and reproduce well. In tetrapods…
Q: Describe the development of the respiratory system in the embryo
A: In the fetus, the respiratory system development begins early. This complex process includes various…
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: During the embryological development of chordates, the midline dorsal layer of ectoderm folds in on…
A: In humans (a chordate), by the end of the third week of gestation, three basic germ layers…
Q: Outline the processes of spermatogenesis and oogenesis in animals.
A: Spermatogenesis and oogenesis are the process of formation of male and female gametes that is sperm…
Q: Write the Patterns of embryonic cleavage and whole mechanism of cleavage. Write gastrulation in sea…
A: Cleavage is the division of cells in early embryo. There may be equal or unequal divisions.
Q: describe internal and external fertilization, and provide examples of animals that use each of these…
A: Reproduction is the biological process through which a new individual organism is produced. The…
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: The outermost germ layer in a vertebrate gastrula is the____ . a. endoderm c. mesoderm b. ectoderm…
A: BASIC INFORMATION FERTILIZATION It is the process of the fusion of the male as well as the female…
Q: Name the embryonic membranes and give the importance of each
A: Embryonic membranes are the membranes that lead to the development of the embryo in the mother's…
Q: Name the three embryonic tissue layers of vertebrate embryos,and describe the process by which they…
A: Gastrulation is the cycle where differentiated cells from the zygote move to their particular areas.…
Q: Which of the following is common to the development of bothbirds and mammals?(A) holoblastic…
A: Birds are any warm-blooded vertebrate of the class Aves. Birds have forelimbs modified into wings, a…
Q: Spermatogenesis and oogenesis
A: Oogenesis is the growth process where the primary egg cell or ovum becomes a mature ovum. There are…
Q: Explain the following terms: ectoderm, endoderm, mesoderm and stem.
A: Animal phylogeny is a rapidly changing field. The biologists mostly depend on the fossils to compare…
Q: Refer to the figures above. Which of the following are embryos: O A. В. D. Both A & B
A: Sexual reproduction includes gamete formation and fertilization.
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: Explain mesoderm where it is present in animal kingdom?
A: In an embryo, germ layer is a group of cells that interact with each other during the development of…
Q: Differentiate Protostomes from Deuterostomes in terms of the formation of cleavage
A:
Q: Describe how the embryo changed from earliest stage to the latest stage of each animal.
A: Embryonic development is studied to visualize similarity among different organisms' developmental…
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: organs of reptiles and birds
A: The biological system of an organism's reproductive system, often known as the genital system, is…
Q: Describe external fertilization process of sea urchin egg with diagram
A: Fertilization in sea urchin occurs solely through the external process in which egg and sperm fuse…
Q: From what the amnion of mammalian embryo is derived?
A: Amnion is an extraembryonic membrane also known as fetal membrane along with chorion, allantois, and…
Q: Write a brief description of one cellular level event that could go wrong during the gastrulation…
A: Gastrulation stage of a zebrafish embryo. The outer dashed line represents the epidermis, while the…
Q: What is the fate of the four extraembryonic membranes in embryos of placental mammals?
A: Any of the tissues, derived from the fertilized egg, that encase or in any case add to the help of…
Q: prepare sketches of Four-cell sea urchin embryo
A: Sea urchins are spiny, globular animals belonging to phylum Echinoderms, in the class Echinoidea.…
Q: What is mesoderm? Name an invertebrate with mesoderm.
A: Introduction During embryonic development the three germ layers, ectoderm, endoderm and mesoderm…
Q: Describe the step-by-step fertilization process in an amphibian. (Please include the structures…
A: Amphibians are the organisms that belong to the class Amphibia. As the name amphibians are Greek…
Q: Compare gastrulation in the frog and the chick
A: The sperm and egg fuse to together to form a zygote, after eighth cell stage, the blastula is…
Q: Summerize various metabolic events involved in cleavage and blastulation in different animals.
A: The development of multi-cellular organisms begins from a single-celled zygote, which undergoes…
Q: explain the developmental processes that will happen to the fertilized ovum of a dog or any animal
A: The individual entity that embodies the attributes of life is known as an organism. There are two…
Q: Describe the step-by-step fertilization process in an amphibian.
A: Fertilization is the combination of haploid gametes, egg and sperm, to frame the diploid zygote.…
Q: During morphogenesis, gastrulation does which of the following? A. Gastrulation produces the…
A: Several stages are involved in the development of a baby from a zygote during pregnancy. It begins…
Q: Describe each stage of the development from fertilized egg to blastocyst stage
A: Fertilization is an important part of sexual reproduction. The nucleus of the male gamete or the…
Q: Prepare sketches of the following Two-cell sea urchin embryo
A: Taxonomic classification is the method of classifying different organisms based on their…
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: Compare the processes of oogenesis andspermatogenesis in humans
A: A cell that contains half the number of chromosomes of a somatic cell and able to unite with one…
Q: Describe the pre-gastrulation morphogenesis found in Amphibian development.
A: The pre-gastrulation morphogenesis found in Amphibian development is an important process that sets…
Q: explain the developmental processes that will happen to the fertilized ovum of a dog
A: The age at which dogs reach sexual maturity varies considerably. Smaller breeds appear to mature…
Q: In animal phyla with radial cleavages, cell fate of the embryo is?
A: Radial cleavage is a developmental pattern of embryos where the cell division happens…
Write in detail the process of organogenesis in vertebrates. Give one example and make diagram also.
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- Explain the following terms: ectoderm, endoderm, mesoderm and stem.Describe the step-by-step fertilization process in an amphibian. Include in the discussion the structures involved in the process.Name the three embryonic tissue layers of vertebrate embryos,and describe the process by which they arise
- Describe the gastrulation by using embryos of the sea star as an example.And describe the way in which the mass of inert yolk influences the gastrulation in bird and frog embryos.Name two structures derived from each of the three embryonic tissue layers: endoderm, ectoderm, and mesoderm.Endoderm, Mesoderm, and Ectoderm are formed during ________. a. Gametogenesis b. Cleavage c. Gastrulation d. Organogenesis
- Compare and contrast gametogenesis in starfish and sea urchin.Using sea star embryos as an example, describe gastrulation. Explain how the mass of inert yolk affects gastrulation in frog and bird embryosDuring the evolution of animals , bilateral summetry accompanied cephalization . suggest a reason for this
- Describe the step-by-step fertilization process in an amphibian. (Please include the structures involved in the process.)Enumerate the types of morphogenetic movements employed by vertebrate embryos in gastrulation. Give examples for each type. Type Drawing Example of structure/organism Invagination InvolutionPrepare sketches of the following Two-cell sea urchin embryo