Q: Name the process of attachment of developing embryo with the uterus.
A: An embryo is an early stage of development of a multicellular organism. The embryonic development in…
Q: After fertilization the blastocyst develops three germ layers. Which germ layer is the innermost…
A: In the human embryo , after about three days of fertilisation,the zygote forms a solid mass of cells…
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: Which process involves the shaping of the embryo and cell migration?
A: Developmental biology is the branch of science that includes the studies of a diversity of…
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: How many days does it normally take from the fertilisation of the egg up to birth of the baby?
A: The normal human gestation period is from thirty-seven weeks to forty-two weeks or 259 days to 293…
Q: Which structures develop from the neural tube and somites?
A: the structures that develop from the neural tube and somites are :
Q: What are the major events that occur from fertilized egg to birth?
A: Fertilization is the process of fusion of the male gamete (sperm) with the female gamete (ovum) to…
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: Explain the Human embryo at beginning of fifth week ?
A: The time between conception and birth of a baby is called the gestation period. A normal gestation…
Q: ___________________ fluid protects the embryo from jarred movements and provides a watery…
A: The embryo inside the womb of the mother grows in a sac like bag called the amniotic sac. It allows…
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: 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 development of the respiratory system in the embryo
A: In the fetus, the respiratory system development begins early. This complex process includes various…
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: What part of the blastocyst develops into the embryo?a. Yolk sacb. Placentac. Polar bodyd. Inner…
A: The time taken for the complete development of the fetus inside the uterus is known as the…
Q: Distinguish between modes of mesoderm formation
A:
Q: How does a morula differ from a blastocyst?
A: Morula Vs Blastocyst: Morula stay distinct from a blastocyst, in which a morula (3-4 days…
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: What are the properties of the multiple ovulution embryo sac?
A: MOET approach involves the production of multiple ovulation embryo sac which contains flush of…
Q: What determines whether an embryo will develop into a male or a female?
A: The process of fertilization is the union of male and female gametes. It results in the formation of…
Q: Where does fertilization normally occur?
A: Reproduction ensures the continuity of species on earth. It can occur in two ways that is sexual…
Q: What triggers activation of the egg?
A: The sperm of several species are attracted to the eggs of their own species by the process of…
Q: What are the three germ layers formed during gas-trulation, and what are the principal structures…
A: Introduction :- Gastrulation is a process in which an embryo converts from a one-dimensional layer…
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: What are the three germ layers formed during gastrulation?
A: Developmental Biology is the field of biology that studies the processes by which multicellular…
Q: Define embryo
A: The process of the formation of new organisms from the existing organisms is called reproduction. It…
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: Name the process of embryo connecting with uterine wall of mother.
A: Embryonic development is the development of embryo from fertilised egg and its subsequent…
Q: Where does fertilization usually take place?
A: The reproductive system consists of two system namely male reproductive system and female…
Q: How do we develop from a single fertilized egg cell?
A: Introduction:- Fertilization is the process of haploid gametes fusing together to generate a diploid…
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: 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: what are the major events of embryo development? what are the major events of fetal development?
A: Embryo development as the name suggests the development or formation of the embryo. Embryo…
Q: Name the structure formed by the villi of the embryo and the uterus of the mother.
A: The uterus or womb is a major female hormone-responsive secondary sex organ of the reproductive…
Q: How is and egg (oocyte) prepared during oogensis for fertilization? Why is preparation essential to…
A: The process of formation of gametes is known as gametogenesis. In females, oogenesis is a process of…
Q: How does the embryo get nourishment inside the mother’s body?
A: Embryo means the developing offspring from the time of approximately 2nd to 8th weeks after the…
Q: How does the sperm reach upto egg and how does it enter into the egg?
A: Fertilization is the process in which a sperm and egg are fused together in the uterine tube of the…
Q: What tissues and organs arise from the three germ layers in embryonic development?
A: In developmental biology, various stages are involved for the development of a foetus. Gastrulation…
Q: What is the time period for which sperm and egg are viable?
A: The mixed glands that serve the function of gamete production in the male reproductive system and…
Q: Describe the body wall of the 55-hour chick embryo.
A: Embryo:- An embryo is a eukaryotic organism's early developmental stage after an egg (produced from…
Q: How do cells communicate, interact, and understand their place in the embryo?
A: Cells: In the human body, cells play a major role which provides the structure, intake the nutrients…
Q: Where does fertilization usually occur?
A: Sexual reproduction is a type of reproduction, which involves a complex life cycle in which a…
Where does the embryo get oxygen and release carbon dioxide? Hint: Where do vascular systems come close to the porous shell?
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- Describe the body wall of the 55-hour chick embryo.Which embryonic germ layer lines the inner surface of the archenteron? Which embryonic germ layer lines the outer surface of the embryo?A: Why do sea urchins have external fertilization? [Discuss the life style of the developing sea urchin embryo in the water column compared to a very different ecological niche of the adults on the ocean floor. Besides, would you want to give live birth to a sea urchin! ouch!] 2: Then why don't the parents take care of the young? [In fact the adults do in a way. After the embryo has grown large enough and metamorphosed into a young urchin they hide in the spines of the adults, living off of the scraps of food produced from the messy eating of the adults] 3: Because the urchin life involves two or more ecological niches, they are more susceptible to predation and exposure to environmental toxins. What environmental conditions, predators and toxins might they be exposed to at each stage?
- Which embryonic germ layer lines the outer surface of the embryo?Explain the major developmental events that occur during the embryonic period.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: 5
- What tissues and organs arise from the three germ layers in embryonic development?Describe the movement of cells during early development that change an embryo from a blastula to a gastrula. Name the three main germ layers, describe their relative locations, and list the fates of the cells descended from each layer. What is the name and significance of the opening in the gastrula?what is the process which involves in the self-destruction of cells in the developing embryo as shown in the disappearance of the embryo’s tail?