The cells that pull the archenteron through the blastocoel in the sea urchin are _____ cells called mesenchyme Group of answer choices A. mesoderm B. endoderm C. meroblastic D. macrolecithal
Q: The mesoderm gives rise to a. structures derived from epidermis, such as hair, feathers, nails,…
A: The process called gastrulation is the most characteristic event occurring during the third (3rd)…
Q: In protostomes and deuterostomes, the space between the endoderm and the ectoderm is important…
A: In early embryonic development, all the animal cells form layers known as germ layers. There are…
Q: Read following statements w.r.t. cockroach and choose the option which correctly states true and…
A: Cockroaches are insects that belong to the order Blattodea. There are 4600 species of cockroaches…
Q: A chemical that prevents acrosomal proteins from interacting with proteins on the egg membrane would…
A: The binding of the sperm to the vitelline envelope of the egg is species-specific.
Q: The formation of three germ layers is called Select one: a. gastrulation b. pluripotency c.…
A: A zygote is the fertilized egg that is formed by the fusion of the egg and the sperm via the process…
Q: Which of the following is develops into the archenteron? A. the placenta B. the endoderm C. the…
A: Placenta is an organ which helps in providing oxygen and nutrients to growing baby and removal of…
Q: Nematocysts are a.) reproductive cells b.)excretory organs c.) set of muscle cells d.)…
A: Answer (e). Defensive cells
Q: Gastrulation in a mammal would be most similar to gastrulation in a. a gecko. b. a tuna. c. an…
A: Gastrulation is a process of rearranging the cells of blastula (blastomere) into three germ layers…
Q: Component of bilaminar germ disc: a.Hypoblast and endoderm b.Epiblast and hypoblast c.Epiblast and…
A: INTRODUCTION In the inner cell mass the bilaminar embryonic disc may formed two layers of…
Q: The main function of the acrosome reaction is to (a) activate the egg (b) improve sperm motility (c)…
A: Answer is d.)facilitate the penetration of egg coverings by the sperm.
Q: At what stage uteroplacental circulation started? a.Maternal blood entering the lacunar b.Embryo…
A: The uteroplacental circulation is a circulatory framework where two circulation systems, the fetal…
Q: The process of gastrulation forms the _______. a. blastula b. zygote c. organs d. germ layers
A: Embryogenesis refers to a process in which the development of an embryo takes place. An embryo can…
Q: Sponge archeocytes can differentiate into A. eggs (oocytes) B. sperm C. choanocytes…
A: Sponges are organised at a cellular level. They don't have any features that may be classified as…
Q: Which of the following statements is FALSE? a. VegT and Veg1 induce both dorsal and ventral…
A: Here, we have to select the incorrect statement regarding development.
Q: 5) The body symmetry that allows for the body to be bisected into equal halves in only one plane is…
A: 5) The body symmetry that allows for the body to be bisected into two equal halves in only one plane…
Q: Somites a. begin forming at the tail end of the embryo and then move forward in a wavelike…
A: Introduction: Somites can be defined as the longitudinal series among other series of blocklike…
Q: 4. Sarcomas and hematopoietic cancers are both derived from which germ layer? A. Ectoderm B.…
A: "Cancer" is a fatal disease that has both physical and mental consequences for a person. Cancer can…
Q: orm only D. Sea Star only E. Earthworm and Squid F. Crayfish and Sea Star G. all four H. none of the…
A: 21- Earthworm and squid 22- All four 23-crayfish and sea star 24-Earthworm only 25- squid only
Q: All of the cell types of an adult vertebrate develop from three primary embryonic germ cell layers,…
A: The three germ layers: ectoderm, mesoderm, and endoderm give rise to various tissues. The ectoderm…
Q: If cells from the presumptive neural ectoderm of a frog gastrula are transplanted onto the surface…
A: The gastrula formation occurs during the early stage of cell development. During gastrulation the…
Q: The..........is a hollow ball of cells that develops from the morula. a) Blastocyst b) Oviduct c)…
A: The fusion of male gamete (haploid) and female gamete (haploid) is known as fertilization. It…
Q: A A Mesoderm Ectoderm Endoderm In the above diagram, there is an opening that has appeared on the…
A: Developmental biology is the study of the process by which organisms grow and develop.
Q: write a correct terminology/word on column B that meet the description of column A 1. the germ cell…
A: Gastrulation is the process by which primary germ layers namely ectoderm, mesoderm, and endoderm are…
Q: Which of the following type of placenta is found in humans? a) Discoidal b) Zonary c) Diffuse d)…
A: Introduction - During the pregnancy phase, the placenta is an organ that grows inside the uterus. A…
Q: In identifying the marginal cells of the tunicate embryo, which of the following is the role of the…
A: The seas squirts are examples of tunicates which are a type of invertebrates found in Marine…
Q: Which of the following statements relating to axis formation in chickens is FALSE? a. Henson's node…
A: A) true- Henson's node secretes proteins that antagonize BMPs and that protein is named as…
Q: Match the terms in column A with the descriptions in column B. Column A a. blastocystb. chorionic…
A: Developmental Biology is the field of biology that studies the processes by which multicellular…
Q: Muscles are formed by the Group of answer choices A. ectoderm B. mesoderm C. endoderm
A: Muscle is defined as a group or collection of muscle tissues that contract collectively to create…
Q: In mammals, primordial germ cells migration ends when they reach the _________________ posterior…
A: Primordial germ cells (PGCs) are highly specialized cells that act as precursors of gametes, which…
Q: In the development of the nervous system, one of the following is false? The neural tube maintains…
A: The vertebrate nervous system is framed in embryos. neural plate: A thick, level bundle of ectoderm…
Q: 1. Which of the following layers protect the mammalian oocyte during ovulation? * a. cortical and…
A: Structure of mammalian Oocyte: mature mammalian Oocytes have many layers before ovulation- Follicle…
Q: Choose the correct statement w.r.t. Periplaneta a.In female cockroach, sperms are stored in…
A: The American cockroach, Periplaneta americana (Linnaeus), is characterized by the largest of the…
Q: Researchers searched for an activator of neural tissue formation. What is the real pathway for this…
A: In this question, from the given choices, we have to select the correct option for neural tissue…
Q: Which of the following statements is false? a. Cadherins, but not integrins play a role in…
A: Fertilization takes place when the nucleus of the sperm fuses with nucleus of the eff. A zygote is…
Q: What is the importance of blastopore formation in protostomes? There may be multiple correct…
A: Blastopore formation further helps in gastrulation i.e formation of body cavity or it mainly forms…
Q: 1. In Deuterostomes, nutrient molecules (monomers) are taken into the space between the endoderm and…
A: Question -1. In Deuterostomes, nutrient molecules (monomers) are taken into the space between 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: Match the tissue to the germ layer it develops from. Question Epithelium Central nervous…
A: Introduction: The three germ layers are notably noticeable in vertebrates during embryonic…
Q: Early in the development of skin, ectoderm becomes A. periderm and mesoderm becomes mesenchyme B.…
A: During the third week of embryonic development, three primary germ layers namely- ectoderm,…
Q: A change in the amount of yolk and its distribution in the egg will affect: A Fertilization…
A: Fertilization is the fusion of haploid male and female gamete results in the formation of the…
Q: mammals, primordial germ cells migration ends when they reach the _________________ posterior…
A: Premordial germ cells are only means of genetic transmission between parent and offspring.…
Q: Which of the following rows correctly identifies a difference between blastocysts and morula? Select…
A: In fertilized egg, the egg undergoes repeated cell division which occurs rapidly to form a…
Q: Which of the following statements is NOT correct about the umbilical cord? a. The umbilical cord…
A: There are 4 extraembryonic membranes that support the growing embryo namely the Yolk sac, Allantois,…
Q: What type of gastrulation is depicted from the diagram below? (A) Blastopore Blastopore 4A 4D 4c 4b…
A: The type of gastrulation depicted from the diagram is: Epiboly
Q: An additional notochord is grafted next to the developing neural tube. Answer the following…
A: The neural tube is an embryonic structure that eventually leads to the formation of the brain and…
Q: Cells transplanted from the neural tube of a frog embryo to theventral part of another embryo…
A: Neural tube of a frog embryo is a tube which acts as an embryonic precursor to the central nervous…
Q: atch the germ layer on the right with its contribution to the tissues and organs of the embryo, on…
A: Endoderm, ectoderm, and mesoderm are the three germ layer types. Tissues and embryonic organs…
The cells that pull the archenteron through the blastocoel in the sea urchin are _____ cells called mesenchyme
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
- The followings are constructed at least partly of cuticle prothorax the peritrophic membrane appendicular ovipositor |fat body |esophagusSiphonicle neck in ammonoidea is directed forwads Select one : True FalseWhich of the following are characteristics shared by the phyla Platyhelminthes and the Nematoda? they have a pseudoceolem they have blind gastrovascular cavities some are parasitic they have bilateral symmetry they are acoelomate they are protostomes
- Please match the term with the description. the anterior end of a tapeworm that attaches to the inside lining of its host's digestive tract [ Choose ] [Choose] medusa describes the number of tissue layers in polyp coelom Cnidarians cnidocytes monoecious the cells that move water through a sponge gastrovascular cavity acoelom pharynx the cells that produce nematocysts scolex gonozooid osculum pseudocoelom triploblastic choanocytes diploblastic spongocoel water leaves a sponge through this opening proglottid spicule ventral sucker an incomplete digestive tract a planarian uses this to suck up food particles [ Choose ] a fluke uses this to hang onto its host's [ Choose ] tissues > > >The rhynchocoel is a. circulatory system fluid-filled cavity primitive excretory system proboscisFigure 27.6 Which of the following statements is false? Eumetazoans have specialized tissues and parazoans don’t. Lophotrochozoa and Ecdysozoa are both Bilataria. Acoela and Cnidaria both possess radial symmetry. Arthropods are more closely related to nematodes than they are to annelids.
- development stage of silverfish (Thysanura)Describe the differences between protonephridia and metanephridia. Give an example of any animalthat possesses either of these structures.Miracidium is a larval stage in the development of… Taenia solium Echinococcurs granulosus Ascaris lumbricoides Fasciola hepatica Hydrozoans are classified under cnidaria because of the presence of… Tentacles Cnidoblasts Hypostome Interstitial cells
- Zoology arthropoda. Name the structure and it’s function.Difference between nematode and cephalochordate in structure and functionThe protrusible rasping organ in a mollusk's mouth that is used to scrape food from the substrate is composed of nacre. a visceral mass. an ammonite. a veliger. a radula.