Q: List and briefly describe the four stages that are thoughtto have led to the formation of the first…
A: The origin of cells was the very first stage in the evolutionary theory of life on Earth. The cell…
Q: Howw many different cell types would you find at the embryonic stages (cleavage, blastocyst, the…
A: After fertilization, the zygote and its associated membranes referred as the conceptus. During the…
Q: Explain follicles and stromal tissues.
A: A cells is basic, structural, and functional unit of life. Plants, algae, bacteria, animals, humans,…
Q: Differentiated cells in a developing embryo derive from________.a. endothelium, mesothelium, and…
A: The zygote undergoes the process of cleavage, which is accompanied by cell divisions. Following the…
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: In the fallopian tube, an egg cell is moved toward the uterus by: simple columnar epithelium…
A: The uterus is connected to the ovaries through two long, narrow tubes. The ovaries send eggs to the…
Q: How are mammalian extraembryonic membranes formed?
A: The layers encircling the embryo inside the uterus are known as extraembryonic membranes. The…
Q: How are mammalian sperm cells produced and incubated at a lower temperature than body temperature?
A: Mammalian sperm is the male gamete that is produced by the process of spermatogenesis in males. Once…
Q: Which cells produce a hormone that is responsible for an increase in muscle and red blood cell mass,…
A: Testosterone is male sex hormone or androgen which stimulate secondary sexual characteristics in…
Q: Describe the three primary germ layers. Describe what body tissues will be derived from each layer.
A: During embryonic development, the initial zygote undergoes cleavage to form a morula and then a…
Q: Which of the following structure develops into only the fetus? A. Blastocyte B. Zygote C.…
A:
Q: Name two structures derived from each of the three embryonic tissue layers: endoderm, ectoderm, and…
A: Two structures derived from each of three embryonic tissue layers are : Endoderm gives rise to…
Q: Name the third tier of embryonal cells in pinus formed.
A: All plants come under the kingdom Plantae. They are eukaryotes, multicellular, and having cell…
Q: Indicating the name and respective ploidy of each involved cell how can theformation of egg cells…
A: the formation of egg cells from the germ cells occurs in the ovaries this process is known as…
Q: Choose the best of the following Which process is responsible for the shape and form of the body? a.…
A: The cell is the basic structural and functional unit of our body. It carries out many functions in…
Q: Define the concept amelioration.
A: Ecology is the study of interaction of organisms with one another and with the environment. Ecology…
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: Identify the epithelial types illustrated in the diagrams to the right. Mentily the apithell type…
A: There are different types of animal tissues and they include epithelial tissue, connective tissue,…
Q: How does senescence occur?
A: In biology, senescence could be a method by that a cell ages and Completely stops dividing however…
Q: Draw the diagram of male thallus and female thallus and differntiate them?
A: The thallus is the vegetative a part of the body which will not differentiate into roots, stem, and…
Q: define germ cells
A: Germ cell is any biological cell which gives rise to gametes of an organism that reproduces…
Q: In a 24-year-old man, which of the following cell types are most likely to be in the process of…
A: Testis is the part of male reproductive system. It is found in the scrotum 2gich provides the 2°C…
Q: Which primary germ layer (endoderm, mesoderm, & ectoderm) did each tissue description derived from?…
A: Gastrulation is a process included in embryogenesis. The cells of blastula arrange themselves in…
Q: State the significance of mother’s milk to a new-born infant.
A: Mother's milk is produced by the special glands called as mammary glands and these are present in…
Q: Which of the following extra-embyonic membranes become the embryonic portion of the structure…
A:
Q: Explain the importance of umbilical cord ?
A: The umbilical cord is an essential lifeline between the mother and fetus. The cord contains two…
Q: Define germ layer
A: Germ layer It is a primary layer of cells that forms during embryonic development. Germ layers…
Q: Which of the following is an embryonic tissue found in animals?
A:
Q: Poor embryonic development occurs because ____________________________.
A: After fertilization, a single celled diploid zygote is formed, which later develops into…
Q: What is colostrum?
A: Infants have developed or immature immune system. Prevention of the infants from the microbes is…
Q: Describe the three stages of cellula stage takes place.
A: The breakdown of glucose for the generation of energy is referred to as cellular respiration. It…
Q: Match the organ/structure to its embryological tissue. Liver [选择] Skin [选择] Blood [选择] Melanin [选择]…
A: Ectoderm refers to the outer germ layer, which is responsible for the development of epithelial…
Q: igment in bottom layer? A. melatonin B. melanin C. mesoderm D. ectoderm
A: Biological pigments are chemical substances that produce color in living organisms, like plant…
Q: Define exine and germ pores.
A: Pollen grains are produced from the anther of flowers. They contain male reproductive cells of the…
Q: what would likely occur if cilia were paralyzed at the time of ovulation?
A: Ovulation is the process of release of ovum from the ovary. It occurs when the FSH and LH both…
Q: How many times larger is the human cell comparedto the bacerial cell? please show callculations.
A: A bacterium is a prokaryote which is a unicellular organism that lacks a nucleus and membrane-bound…
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: Match the tissue to the germ layer it develops from. Question Epithelium…
A: The three germ layers are particularly seen in vertebrates during the embryonic development.…
Q: What are germ cells?
A: In humans, mainly 2 types of cells are present; germ cells and somatic cells.
Q: why are the immature cells important
A: In biology, we believe that cells are the basic building blocks of the life. They are the smallest…
Q: T.S. of mammalian testis revealing seminiferous tubules show different types of cell.(i) Name the…
A: The male reproductive system is located in the pelvis region. It includes a pair of testes along…
Q: What part of an infant’s body is said to stay in an immature state until needed to produce more…
A: Human stem cells are one-of-a-kind cells that have the ability to differentiate into a wide range of…
Q: The ectodermal layer in the fetus will develop into:
A: Correct answer: Nerve and Skin (first option)
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: The germ layer that gives rise to the outer covering of the body and the nervous system is
A: The correct answer would be E. Ectoderm This germ layer gives rise to both the outer layer of our…
Q: develop(s) from the ectoderm while ii above is completed by the information in row: develop(s) from…
A: The humans are triploblastic organism that contain three germ layers that includes- ectoderm,…
Differentiate between human skin cell and human ovum.
Cell is a basic membrane-bound unit and it is often called as the basic building blocks of all living things. Generally, cells are microscopic in size. Most cells have one or more nuclei and other organelles that perform a variety of functions.
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- Match the tissue to the germ layer it develops from. Question Epithelium Central nervous system Muscles Digestive tract Skeleton All Answer Choices A. Endoderm B. Mesoderm C. EctodermWhich of the following gives rise to the skin cells? a. ectoderm b. endoderm c. mesoderm d. none of the aboveT.S. of mammalian testis revealing seminiferous tubules show different types of cell.(i) Name the two types of cells of germinal epithelium.(ii) Name of cells scattered in connective tissue and lying between seminiferous tubules.Differentiate between them on the basis of their functions.
- Component of bilaminar germ disc: a.Hypoblast and endoderm b.Epiblast and hypoblast c.Epiblast and ectoderm d.Ectoderm and mesodermWhat happens to the second sperm nucleus, the one that does not fertilize the egg cell? What is the tissue that develops from this second “fertilization”? How is coconut related to this?Construct a Table to show the differentiation of the Germ Layers: ( It is a known fact that body parts emanate from one or more of the three germ layers )