Q: Write notes on holometabolous development
A: Metamorphosis is the biological mechanism by which an animal physically develops after birth or…
Q: List the four primary tissue types of the adult body and identify which of the three primary germ…
A: A tissue is defined as a group of cells which are having a similar structure and are organized to…
Q: Give the origins and functions of the chorion, amnion, allantois, and yolk sac.
A: The extraembryonic membrane can be defined as the type of membrane which helps in the development of…
Q: Describe the processes of fertilization, embryonic development, fetal development, and birth.
A: Answer- Every organism reproduces for their continuity of species. In sexual mode of reprodution the…
Q: State the exact location of ocellar spots.
A: Ocellar spots are the simple eye present in many invertebrates. Invertebrates are the organisms that…
Q: Identify the organ systems that are formed from each of the primary germ layers.
A: Endocrine System is the organ system that is formed from each of the primary germ layers.
Q: describe implantation including the process of placentation, embryonic development, and membrane…
A: The processes of implantation, placentation, embryonic development and membrane formation occurs…
Q: State some functions of amniotic fluid.
A: The embryo inside the womb of the mother grows in a sac like bag called the amniotic sac. This sac…
Q: Explain the Fertilization and Early Stagesof Development ?
A: The reproductive system(male and female) is a complex system with a number of interconnected…
Q: State the functions of the placenta, amnion, chorion, yolk sac, and allantois?
A: The placenta is developed during pregnancy in the uterus. It provides oxygen and nutrients to the…
Q: What is yolk? What is its role in fertilization and development?
A: The development of organisms depends on the supply of resources. In embryo development nutrition of…
Q: How is the yolk sac formed?What is the function of theyolk sac?
A: Yolk sac is the membranous sac attached to the embryo. It is also known as umbilical vesicle.
Q: Describe the major events that transform a fertilized egg into an embryo?
A: BASIC INFORMATION FERTILIZATION It is the process of the fusion of the male as well as the female…
Q: elaborate on the relationships between the three germ layers in forming the mouth and facial…
A: The three main layer of body parts are ectoderm ,mesoderm and endoderm . We know that mouth is…
Q: Describe the fertilization process and how an egg prevents fertilization by more than one sperm?
A: The reproductive system of the body is one of the important systems of the human body which ensures…
Q: Define segmentation, and give two examples of segmented structures in the embryo.
A: The science that investigates the processes by which multicellular organisms like plants and animals…
Q: describe the process of progressing from zygote to blastocyst
A: In human development many stages occur like the zygotic stage where sperm get to meet with female…
Q: Differentiate the primitive streak of the 24-hour from the primitive streak of the 18-hour
A: Primitive Streaks and its peculiar shape at various stages--- Primitive streak is very important…
Q: Distinguish between modes of mesoderm formation
A:
Q: Describe the major events in embryonic development
A: Introduction: Embryonic development is an 8-week process and has phases of development during which…
Q: Explain the juvenile phase.
A: Growth is defined as the process of permanent increase in size and complexity of an organism during…
Q: Describe what happens during the first days of embryonic development from the first cell division…
A: Human embryo development occurs through cell division and the differentiation of cells. Human embryo…
Q: Explain the major developmental events that occur during the embryonic period.
A: Introduction:Embryonic development is an 8-week process and has phases of development during which…
Q: Identify the features and physiological changes of the postnatal stages of life.
A: Postnatal period is the phase post birth. Puerperium is the term used to define this phase.…
Q: Describe the process of embryonic induction, and provide anexample
A: Induction in biology means inducing a process or causing a process to occur.
Q: Explain the Embryonic Germ Layers ?
A: The layers of cells produced during the early phase of embryo development which gives rise to the…
Q: Explain the rationale for periodic revaccination in childrenand adults.
A: The adaptive immunity must be acquired through the encounter of various pathogens. In general, B…
Q: Identify the labeled structures in the embryo shown:
A: Archenteron is a structure which is observed in a developing embryo in the Gastrulation stage. It is…
Q: C. Explain the functions of the four layers found inside an amniotic egg.
A: Amniotic eggs are eggs that produce by mammals, birds, reptiles etc. The embryo development take…
Q: Describe the major developments during each trimester of human gestation.Describe the major…
A: Gestation is the time of advancement during the conveying of an embryo or fetus inside viviparous…
Q: Describe the major events that occur during embryonic development, and give the time period during…
A: Embryonic development is also known as embryogenesis. This phase begins with the fertilization o the…
Q: In gastrulation explain reorganition of the embryonic cells, formation of germinal layers and name…
A: Gastrulation is a process that occurs during embryonic development in which the embryo from a…
Q: How is the yolk formed in terms of embryogenesis
A: Embryogenesis is the course of improvement of an undeveloped embryo from the zygote. In…
Q: List and describe some developmental anomalies associated with gastrulation.
A: The term gastrulation basically address the early development of embryo from 1-D layer of epithelial…
Q: Give the approximate length of the various parts of the oviduct of a female chicken including its…
A: The different parts of oviduct of a female chicken along with their length are: Infundibulum: 2…
Q: Which embryonic germ layer lines the inner surface of the archenteron?
A: Germ layer can be seen in embryonic development in animal embryogenesis. It is the layer of cells.…
Q: Explain the importance of calcium in internal and external fertilization.
A: The fusion of gametes, mainly from two opposite sexes, is referred to as fertilization. The…
Q: indicate the duration of the embryonic vs fetal period.
A: Gestation is divided into pre-embryonic, embryonic and fetal stages. The embryonic stage starts from…
Q: What happens in the 3rd- 8th stage of embryonic stage of prenatal development? A major milestone…
A: Embryonic stage: The beginning of third week after conception marks the start of the embryonic…
Q: Explain how the different germ layers give rise to different tissue types.
A: The three different germ layers are formed by the process of gastrulation in early embryo. It is the…
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: The order in which the physiological stages occur during embryonic development is and
A: The fusion of haploid male gamete(sperm) and female gamete(egg/ovum) to form diploid zygotes is…
Q: Illustrate a grastula showcasing the three germ layers and label it
A: Fertilization is the process in which male and female Gametes bind to form embryo . Embryo undergo…
Q: Label the parts of the chick embryo
A: Parts Of The Chick Embryo oropharyngeal membrane angiogenic cell cluster Ectoderm Endoderm…
c. To what extent has mesoderm migrated in the blastoderm of the 24 hour chick embryo?
After twenty-one days of incubation, a chick emerges from a fertile egg. On the surface of the yolk, the germinal disk is visible. In the single cell produced by the union of two parental cells, the egg and sperm, the development of the chick starts in the process known as fertilization.
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- 4. Finding the size of a sea urchin embryo Observe the image of the sea urchin embryo. 50um Photo credit. Notice that the size of the scale bar is 50 um. Keeping this image available, watch the sea urchin embryo cell division movie. Calculate the diameter of a sea urchin embryo at the one-, two-, and four-cell stages. Show your calculations below. If that video doesn't play (it unfortunately requires Flash), you can try this similar but longer one that involves a longer story of sea urchin romance preceding fertilization and zygote divisions! It lacks a scale bar, but you can use the scale bar from the image above. https://www.youtube.com/watch?v=4445zftLCDQ a. One cell-your calculations: b. Two cells-your calculations: c. Four cells-your calculations: 5Explain the juvenile phase.Explain gastrulation. brief
- List and describe the phases of embryonic development; from a zygote through gastrulation. What happens after gastrulation?Define segmentation, and give two examples of segmented structures in the embryo.Where does the embryo get oxygen and release carbon dioxide? Hint: Where do vascular systems come close to the porous shell?