Q: diagrams
A: A process in which embryo ties with the endometrial surface of uterus and invades the maternal…
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 the process of gastrulation and embryonic folding?
A: Gastrulation is the process of cell relocation and distinction into three primary germ layers…
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: Explain why the embryonic period is so important.
A: The embryonic stage of gestation is that the amount once implantation, throughout that all of the…
Q: Describe the stages of birth, and also explain the role of midwives and doulas in the birth process
A: Labour is a process of giving birth the product of conception in completed gestational age. labor…
Q: Explain Briefly Compare and contrast the role of hormones that causes changes to the male and female…
A: At the age of about 8 the hypothalamus gland increases its production of gonadotropin releasing…
Q: List the changes seen in human beings that are indicative of reproductive maturity?
A: Reproductive maturity is also known as puberty. It is that time when the child's body starts…
Q: Discuss the different types of eggs based on yolk content and give example.
A: Introduction Reproduction is a biological process in which a parent is responsible for producing…
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: Which of the following steps of sea urchin fertilization initiates the formation of the…
A: Fertilization is the union of male ( spermatozoa ) and female ( ovum ) gametes which results in the…
Q: Explain the changes in size and position of the frog blastocoel during gastrulation. (min. 5…
A: 1.The size of the blastocoel reduces during gastrulation in frog 2.this is because of contraction of…
Q: Which of the following rows identifies the site of fertilization, and the hormone released when the…
A: The fusion of male and female gametes is known as fertilization.
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: 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: Match the germ layer with the correct derivative Gastrodermis v [ Choose ] Ectoderm Endoderm…
A: There are 3 germ layers ectoderm, mesoderm and endoderm giving rise to different organs in…
Q: Which of the following is false? a. The endoderm, mesoderm, ectoderm are germ layers. b. The…
A: The fusion and amalgamation of the male spermatozoa with the ovum of the female are the…
Q: Explain the juvenile phase.
A: Growth is defined as the process of permanent increase in size and complexity of an organism during…
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: Compare and contrast the mechanisms of egg activation in internal versus external fertilization.
A: Fertilization is part of sexual reproduction, responsible for the fusion of gametes. In case of…
Q: Define(a) Juvenile phase,(b) Reproductive phase,(c) Senescent phase.
A: In many animals, the life cycle of the organism may include many stages like the juvenile phase,…
Q: A fertilized egg is the blue print of future development’. Explain
A: A single cell-fertilized egg is transformed into a fully developed and independent individual. It is…
Q: Illustrate a model of female reproductive system of frog showing structures and pathways during…
A: Oviposition is a widespread process in vertebrates apart from eutherian mammals, and it refers to…
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: O Occurs in protostomes and involves mesodermal tissue that is located in the space between the…
A: Ans- Occurs in protostomes and involves mesodermal tissue that is located in the space between the…
Q: w does the fertilized egg give rise to the adult
A: Life begins with a single cell known as a Zygote. The single diploid cell produced by the merging of…
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: The embryonic stage is completed by the end of the ___________________ week of development.
A: Embryonic development or embryogenesis is the mechanism or process by which an embryo. forms and…
Q: Describe the path of a mature egg that is released and fertilized.
A: An egg is a female gamete and is released by the ovaries. At its release, it is at secondary oocyte…
Q: Explain fertilization of sea urchin from Recognition of egg and sperm, Gamete fusion
A: NOTE:- As you have mentioned multiple parts in one question, we will solve the first three parts for…
Q: Fertilization: a) Briefly describe the process of fertilization in humans, b) identifying key…
A: Sexual reproduction is the process by which new young ones are produced, by fusion of the genetic…
Q: Hermaphroditic animals can self-fertilize, except earthworms. Why? And is this an advantageous or…
A: Earthworms are bisexual, which means male and female regenerative organs are available in same body.…
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: Match the 3 germ layers with the specific structures they will develop into. Question 10 options:…
A: The reproductive growth process takes place in three principal stages. The first two weeks after…
Q: Draw the image below, which also shows the result of opening the uterine horn, revealing the…
A: An embryo develops to form fetus and an embryo is formed by the fusion of male and female gametes.…
Q: What are the types of eggs based on their yolk content? What patterns of cleavage will they undergo…
A: As per bartleby guideline we are suppose to answer only 1 question. Please post the other question…
Q: What are the advantages and disadvantages of internal fertilization over external fertilization? How…
A: Internal fertilization - It is the fusion of egg and sperm during sexual reproduction inside the…
Q: What is a fertilized egg called?
A: Sexual reproduction is a type of reproduction that involves a complex life cycle in which a gamete…
Q: What is fertilized egg known as?
A: Fertilization When male gamete fuses with female gamete, this process is known as fertilization.
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: 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: What happens in the process of fertilization in animals and humans?
A: The cells of the biological unit of life. the cells comprise tissues which collectively forms an…
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: 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: Describe each stage of the development from Fertilized egg to blastocyst stage
A: Fertilization is a crucial step in the process of sexual reproduction. The zygote is formed when the…
Q: Label the parts of the chick embryo
A: Parts Of The Chick Embryo oropharyngeal membrane angiogenic cell cluster Ectoderm Endoderm…
Q: To what extent has mesoderm migrated in the blastoderm of the 24 hour chick embryo
A: After twenty-one days of incubation, a chick emerges from a fertile egg. On the surface of the yolk,…
C.
Why do sea urchins have external fertilization?
D.
Then why don't the parents take care of the young?
E.
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?
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- A. Water currents in the ocean are much stronger than any sperm. How do sperm and egg find each other? B. In humans there are no water currents and the volume of the female reproductive tract is relatively limited. Then, why does the male have so many sperm? C. Why do sea urchins have external fertilization? D. Then why don't the parents take care of the young? E. 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?Study the sea star development slides, including early and late stages and identify the following stages and structures: zygote, two cell stage, morula (stage), blastula (stage), blastocoel (cavity), archenteron (cavity), ectoderm (layer), endoderm (layer), gastrula (stage). **See Table 52.1, Section 52.3 & 52.4 in textbook ** Why is it useful to study the development of sea stars (Echinodermata) when studying human development? What do the two have in common?Describe a two-year cycle in the life of an adult female gray whale by answering the specific questions below. Where do they mate and give birth? How often do they give birth? Where do they spend the non-breeding season? (Note this is also where they eat because they don’t typically feed during migration or on their breeding waters.) When do they migrate south along the Oregon Coast? When do they migrate north along the Oregon Coast
- 1-Propose an example of an (non-insect) animal with indirect post-embryonic development and continuous growth. 2-Propose an example of an (non-insect) oviparous animal with direct post-embryonic development.The breakdown of the life cycle of a blowfly is: Group of answer choices Emergence of fly, pupation, oviposit, Active Larvae (Maggots) Active Larvae (Maggots), Pupation, Oviposit, Emergence of Fly Pupation, Active Larvae (Maggots), Oviposit, Emergence of Fly Oviposit, Active Larvae (Maggots), Pupation, Emergence as Flygle Chrome om/mod/quiz/attempt.php?attempt=17129308cmid%-837776 NG SYSTEM (ACADEMIC) In a sponge, reproduction is: CO a. Individuals have both male and female reproductive systems. O b. Individuals either have a male or a female reproductive system. C. Some individuals have only sexual reproduction, while others are entirely asexual. O d. Reproduction is entirely asexual by budding. O e. Individuals have nor reproductive organs, but produce both male and female gametes.
- Visit the WRASSE and ANTHIAS GALLERY:https://explore.org/livecams/aquarium-of-the-pacific/pacific-aquarium-tropical-reef-habitatcamMost wrasses are sequential hermaphrodites. What do you think is an adaptive advantage of this characteristic?Which of the following is true about Sea urchin blastula formation and fate map? a) ectoderm that develops into the larval skin and neurons, is regularly produced by the vegetal half of the embryo. b) an1 layer generates cells that can enter either the ectodermal or endodermal organs of the larva. c) veg2 layer forms the endoderm, coelom (internal mesodermal body wall), and the non- skeletogenic mesenchyme. d) small micromeres differentiate into the PGCS e) large micromeres differentiate into the secondary mesenchyme cellsReproductive modes can be defined based on energetic provisioning (lechithotrophy vs. matritrophy) or birth style (ovipary vs. vivipary). Reproductive modes related to birth style mostly fall into clear categories of energetic provisioning. Define the above four reproductive modes based on energetics and style that make them distinct. Be sure to mention WHEN the relevant events related to each occur. Finally, explain why the birth style of ovovivipary less clearly falls into any one of these categories...
- a. Which parasites are zoonotic?b. Which are strictly human parasites?c. Which are borne by vectors?d. Which cause intestinal symptoms?e. Which are hermaphroditic?f. Which are associated with rare or raw meat?Which of the following steps of sea urchin fertilization initiates the formation of the fertilization envelope? A Acrosomal reaction Fast block to polyspermy Egg activation Cortical reaction Chemo-attractionDetermine whether the reproductive behavior is evolutionary stable or unstable: Cowbirds are nest parasites. The females sneak into other birds' nests and lay their eggs, often removing the host bird's eggs. The cowbird eggs tend to match those of the host's eggs, and often the host does not detect that the cowbird's eggs have replaced their own. The host birds raise the cowbird chicks to maturity.