What is the chorioallantoismembrane present in theembryonic development ofreptiles and birds? How doesthis membrane participate inthe energetic metabolism ofthe embryo?

Q: During what process does the amnion envelop theembryo?a. embryonic foldingb. gastrulationc.…

A: The amnion refers to a membrane, which closely envelops the embryo when formed initially. It gets…

Q: Draw the structure of hypogynous and perigynous and epigynous?

A: When the flower is examined by examiner. It was found to be in numerous arrangement of flowers on a…

Q: From which germ layer doblood cells originate? Whatare other organs and tissuesmade from that germ…

A: A layer primarily formed from the early cells of the embryo formed during it development is known as…

Q: What is the differencebetween amnion and chorion?

A: Both amnion and chorion are present during a woman’s pregnancy and are part of the extra embryonic…

Q: What is the embryonic sac?Which are the cells that formthe embryonic sac? What aretheir ploidies?

A: The angiosperms are vascular plants that produce flowers and fruits, and they belong to the phylum…

Q: O Blastula Gastrula O Fertilized egg O Unfertilized egg O Morula

A: Introduction:-   The fusion of hapliod gamets ,egg and sperm to form the diploid zygote is called…

Q: What are the regulatory mechanismsthat control the rearrangement ofcell–cell junctions in epithelia…

A: The cells are attached together by a specific adhesive glycoprotein. The epithelial cells are…

Q: Katie was getting nervous. At 16, she was the only one in her group offriends who had not started…

A: Humans have 22 pairs of autosomal chromosomes and a pair of sex chromosomes. The sex chromosomes…

Q: Why must animals be modifi ed in the embryo stage?

A: In this question, we will discuss the fundamentals of how humans have learned to manipulate genetic…

Q: Bird and Mammalian Development. How are they similar and how are they different. Know A-P, D-V and…

A: Mammals undergo holoblastic rotational cleavage, characterized by a slow rate of division, a unique…

Q: A sperm with a defective acrosome would not be able to:a. swimb. penetrate the eggc. penetrate…

A: Option b is correct.   Explanation- In a sperm head, hydrolytic enzymes are present as mentioned.…

Q: What are the cells producedin the first stage of theembryonic developmentcalled?

A: The process in which the embryo forms and develops is known as embryonic development.

Q: From the ectodermal epithelium of the lining of the upper part of the intestinal fossa of the human…

A: Introduction :- Skin, sweat glands, skin sensor receptors, and hair follicles are just a few of the…

Q: What is the cell divisionduring the first stage of theembryonic developmentcalled? How is this…

A: The process by which a parent cell divides into two identical daughter cells, is called Cell…

Q: describe the gross and microscopic anatomy of thestomach;

A: Food ingested through the mouth passes through the esophagus and reaches the stomach. This is the…

Q: ''In the early cleavage stages, when the embryocannot yet feed, the developmental program is driven…

A: The series of cell divisions that occur in a fertilized egg as it begins t develop into embryo is…

Q: Define Preprophaseband

A: Mitosis is a process in the cell, where a single cell divides in two identical  daughter cells. The…

Q: What's the process of gastrulation in humans, how the embryo forms the three germ layers, and which…

A: The inner cell mass which is known as Blastula is now grown into a cell mass known  Gastrula and…

Q: Describe the events that occur following fertilization ofthe oocyte and the process of implantation…

A: The menstrual cycle of a woman repeats itself every 28 days and consists of four phases namely the…

Q: After the blastula stagewhat is the following stage ofthe embryonic development?What is the passage…

A: The process by which the embryo forms and develops is known as embryonic development. It includes…

Q: Explaintheroleofmitosisin: (a) A developing embryo (b)Anadult:

A: An embryo is the early stage of the development of a multicellular organism. In organisms that…

Q: When viewing a 14-day old human embryo, could you identify the cranial and caudal ends? If yes,…

A: Gastrula is a three layered structure which transforms blastula into a complete organisms.

Q: What is an example ofnegative feeback of thehomeostatic regulation?

A: A feedback mechanism is a common mechanism of hormonal or nervous control and regulation. There are…

Q: What determines the antero-posterior polarity in vertebrate embryos?

A: The Anterior-Posterior (AP) axis is an embryonic axis that helps the animals to travel…

Q: Explain the eccentric position of the early frog blastocoel. (min. 5 sentences)

A: A zygote is formed during the embryonic development that occurs when the egg is fertilized by a…

Q: Are the extraembryonicmembranes the same in allvertebrates?

A: An embryo is an early phase development for an unborn baby. A small fertilized egg divides and grows…

Q: Occasionally, two primitive streaks form in one embryonic disk. Predictthe result. What happens if…

A: Primitive streak : A primitive streak is defined as a transient structure that forms during the 15…

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: Is the sulcus limitans present at the 72-hour stage? State the derivatives of the sacculus and

A: Embryo development is a process that occurs after the process of fertilization has occurred and the…

Q: how is a childs wolrd broadend during the preoperational stage?

A: Piaget theory states the four different stages of the development of children and that depicts…

Q: The anterior pituitary gland develops from whichembryonic germ layer?a. oral ectodermb. neural…

A: Embryonic development is also called as embryogenesis. It is a process through which the embryo…

Q: Explain the functions of the parts observed in the image that relatw to the male reprudctive system.…

A: Fetal pigs are unborn pigs that are generally used for dissection and are used to study mammalian…

Q: What is the pH inside thestomach? Why is there a needto keep that pH level? How isit maintained?…

A: The digestive system includes the gastrointestinal tract and accessory organ that help in digestion.…

Q: which chaachteran (s) difforentlates extnt cyebstene fromextent cartildginaus Aish…

A: Cyclostomes is group or class of vertebrates which contains the living jawless fishes for example…

Q: What generalizationscan you make aboutthe location ofmesoderm, whenpresent, during andafter…

A: Embryology is about the study of zygote and embryonic and organ development in plants and animals.…

Q: A newborn's first breath must be particularly forceful since the moist membranes of the lungs are…

A: From birth to 1 month period babies called as a newborn babies.  These type of babies need a special…

Q: The embryonic membrane that is attached to the edge of the embryonic disk and surrounds the…

A: The placenta is an essential organ with different capacities, for example, endocrine, insusceptible,…

Q: What is gastrulation? Howduring gastrulation are thefirst two germ layers formed?What are these germ…

A: Reproduction is the process of development of new offspring from the existing organisms. It is of…

Q: O Lungs Claws or nails Mammary glands O Jaws O Fur O Feathers

A: A phylogenetic tree helps to understand evolutionary relationship between organisms.

Q: Explain the developmental and functional similarities and differences between: Avian amnion and…

A: The membrane , that closely covers the human and various other embryos when first formed, it is…

Q: In northern latitudes, a variety of birds and mammals createstorage depots of food, termed caches,…

A: Physiology of development The study of functional qualities at various phases of an individual…

Q: Which serous membrane(s) is/are found in the abdominopelvic cavity?

A: The abdominopelvic cavity comprises of the abdomen as well as pelvic cavity. The abdominopelvic…

Q: distinguish between hemimetablous and holometabolus development

A: Introduction: Metamorphosis is a biological process of the development of an animal. It involves…

Q: In a developing chicken embryo, why is the chorioallantoic membrane used in embryologic experiments?

A: This is a membrane found in the eggs of various amniotes which includes birds and reptiles. It is…

Q: The zygote is described as totipotent because itultimately gives rise to all the cells in your body…

A: Introduction The zygote is the fertilized egg,  a single cell formed by the fusion of an egg and…

Q: Owhat would happen to the parameaum ië the external meaum IF Concentratiom increased past 7units?

A: Paramecium is a single celled organism.  This is grouped under the Protista kingdom. Contractile…

Q: What are the specialstructures of the aviandigestive tube and theirrespective functions?

A: The analysis of birds' anatomy reveals the presence of a light skeletal system and a circulatory…

Q: The earliest organ to form and begin function withinthe developing human is the ________.a. brainb.…

A: The development of the human being is the procedure of growth to maturity. The procedure starts with…

Q: Concerning the mixture ofarterial with venous bloodwhat is the differencebetween the human…

A: Artery: - There are two types of the artery, systemic artery, and pulmonary artery. A systemic…