This is the outermost layer that protects from water loss but allows for gas exchange: amnion allantois chorion yolk sac

Q: Describe the process of development, from fertilization to parturition.

A: Fertilization- It occurs in fallopian tubes and leads to the formation of a diploid…

Q: Discuss how the development of an artifi cial placenta is an important step in the study of…

A: The artificial placental involves the fruitful transportation of a hatchling weighing somewhere in…

Q: ......... is not developmental event in human and frog.   After fertilization rapid cycle of…

A: Fertilization is the event that marks the fusion of the female and male gamete which leads to the…

Q: Which of the following releases human chorionic gonadotropin (hCG)? a. inner cell mass b.…

A: Human chorionic gonadotropin (hCG) has properties similar to those of luteinizing hormone of…

Q: Fill in the blank:  _________________ on the inner lining of the uterine tube aid in moving a…

A: Embryo genesis is the formation of embryo and for this process to occur, ovary releases an…

Q: Which process occurs between the zygote and the embryo stage

A: Fertilization is the process of fusion of the male gamete and the female gamete, resulting in…

Q: ..is the monthly series of changes a woman's body goes through. The menstrual cycle Pregnancy…

A: The menstrual cycle is the regular natural change that occurs in the human female reproductive…

Q: The _______ is an important structure for waste storage in birds and some mammals, but not in…

A: Extraembryonic membranes are the layers enclosing the embryo inside the uterus. There are four…

Q: The bladder like structure in the amniotic egg

A: The allantois (plural allantoides or allantoises) is an empty sac-like design loaded up with clear…

Q: Which of the following consists of both fetal and maternal tissues? (a)umbilical cord (b) placenta…

A: The unborn offspring that is known to develop from an embryo is called the fetus. The overall…

Q: Which of the following has three germ layers? (a) morula  (b) gastrula (c) blastula (d) blastocyst…

A: Answer is b.)  gastrula.

Q: One function of the placenta in a 1 point human is to * (1) Allow nutrients to diffuse from the…

A: Placenta is the structure which is formed by both the fetus and the mother. It release the hormone…

Q: Cleavage produces daughter cells called ________.a. trophoblastsb. blastocystsc. morulaed.…

A: Cleavage is described as the procedure of cell division in early embryo to generate a cluster of…

Q: Draw the chromosomes in the zygote (cell after fertilization) egg cell fertilization sperm cell

A: Sperm cell is the male gamete and egg cell is the female gamete. Gametes are haploid in nature. Male…

Q: Eventually the amniotic cavity is surrounded by a double-layered membrane called the…

A: The amniotic cavity is the cavity which is the closed sac between the embryo and the amnion and…

Q: At what phase of development would a mouse embryo appear me similar to a chick embryo? Blastula…

A: THE STAGE OF DEVELOPMENTIS BLASTULA STAGE.

Q: Which of these is mismatched?a. chorion—sense perceptionb. yolk sac—fi rst site of blood cell…

A: Animal development is the process in which a fertilized egg undergoes cell division and cellular…

Q: Which of the following is not derived from the ectoderm? a. adrenal medulla b. epidermis of skin c.…

A: The cell is known to be the fundamental unit of all life forms. Those who are similar in functions…

Q: Umbilical cord contains A allantois B yolk sac C arteries veins

A: The umbilical cord is a stretchable, tubular  structure which joins the fetus to the mother during…

Q: EGG SPERM EMBRYO Growth and development Continuity of life

A: Life processes such as growth and reproduction are shared by all living creatures. To establish if…

Q: How does the placenta work? blood to mother low in O,/nutrients, high in CO,waste umbilical cord…

A: In placental mammals, the fertilized zygote develops into a young one within the uterus (womb) in…

Q: In this picture which letter represents the chorion? Embryo D Mother's blood vessels G OE O o o

A: The chorion is the outer membrane surrounding the developing embryo in amniotes. It originates from…

Q: The hypoblast layer of the blastodisc is made of cuboidal cells and forms during the fetal period. O…

A: After 4 -6 days of fertilization, the morula reaching the uterus form blastocoel and transform into…

Q: Put “disappear”, if they disappear in the process of development and put the word “dissolved”, if…

A: Introduction Embryonic development is also called embryogenesis. It is the process where development…

Q: Which of these produces blood cells and germ cells at the early stages of fetal development? O…

A: The yolk sac is responsible for producing blood cells and germ cells during the early stages of…

Q: Which of the following specifically describes ovoviviparity? Animals are born by live birth Animals…

A: According to the mode of development of young babies, the animals are classified into different…

Q: Fill in the blank: Eventually the amniotic cavity is surrounded by a double-layered membrane called…

A: Introduction: Fetal development undergoes a series of steps. To protect the fetus from any injury…

Q: Which of the following extra-embryonic membranes becomes the embryonic portion of the structure…

A: Extraembryonic membrane are the extra membrane that are formed outside the growing embryo . There…

Q: Identify which of the following, if any, are unique to mammals:a female uterus, a male vas deferens,…

A: Mammals are the class of vertebrates that includes humans. They contain mammary glands, middle ear…

Q: Which of the following is NOT a function of the placenta? To supply the embryo or fetus with milk.…

A: The placenta grows during pregnancy in the uterus. The placenta connects to the uterine wall, and…

Q: In the development of a "three-parent baby", the third parent donates which of the following?…

A: Here, first and second parent donates egg and sperm and contribute to the genetic makeup of the baby…

Q: Both monotremes and marsupials lay eggs. have some embryonic development outside the uterus. are…

A: Introduction :- Mammals are divided into three types :- Monotremes , marsupials and mammals etc. The…

Q: Rose tells you her sister was only in labor 1 hour when she had her baby. Rose is planning to spend…

A: Yes we will advice her not to go for camping in her last day of pregnancy.

Q: Aside from the nervous system,  which other organs system develops out of the ectoderm

A: Integumentary system (SKIN)

Q: What is the third layer that forms as a result of gastrulation in some animals? mesoderm endoderm…

A: Gastrulation is the cycle during early stage advancement that changes the incipient organism from a…

Q: Which of the following does NOT happen in the germinal period? a. dividing mass of cells travels to…

A: During the nine months of a female's pregnancy, an infant goes through a lot of changes. An infant's…

Q: Give gestation period of elephant, dog, cow.

A: The fertilization can be defined as the process in which the male sperm fuses with the female egg to…

Q: If the egg is not fertilized, the disintegrates causing

A: The merger of haploid gametes, egg and sperm, to form the diploid zygote is known as fertilization.…

Q: Which of the following cells develops into a human embryo?A. TrophoblastB. Extraembryonic membraneC.…

A: The blastocyst is a structure and is formed in mammals’ early development. It consists of ICM (inner…

Q: Division of human egg is a) Holoblastic and equal b) Holoblastic and unequal c) Isoblastic d)…

A: Introduction - One of the largest cells in the human body is the human egg, or ovum. It is, however,…

Q: The cell formed after fertisation is called:         I.   Foetus        II.   Zygote       III.…

A: Fertilization is the process of fusion of male and female gametes. It is one of the essential…

Q: Which of the following statements is true: O invagiantion is folding of cells that happens early in…

A: Blastocoel is a fluid filled cavity in blastula. First the morula(60 or more cells) is formed then…

Q: Which of the following correctly lists the germ layers of an embryo? O A. exoderm, mesoderm,…

A: Step 1 Embryonic development or embryogenesis is the development of the embryo from the fertilized…

Q: When cows have twin calves of unlike sex (fraternal twins), the female twin is usually sterile and…

A: Freemartin refers to a female twin born with a male and who is sterile with masculanized characters.…

Q: Draw the chromosomes in the zygote (cell after fertilization) egg cell fertilization sperm cell of

A: The fusion of feale gamete (egg cell) and male gamete (sperm) is termed as fertilization.

Q: Fill in the blank:  The embryonic membrane that is attached to the edge of the embryonic disk and…

A: An embryonic membrane is a type of membrane that originates from the fertilized egg cell, and are…

Q: Events that occur from fertilization to the development of an embryo in animals

A: Answer: Introduction: Embryonic development in animals is also known as embryogenesis, is the growth…