What is a potential result of injecting notochord tissue into the ventral (bottom) region of the mesoderm of a frog embryo. Group of answer choices A. a tadpole with no dorsal surface B. a tadpole with reversed legs C. a tadpole that never becomes an adult D. a tadpole with two spinal cords and brains
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What is a potential result of injecting notochord tissue into the ventral (bottom) region of the mesoderm of a frog embryo.
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- Which of the following statements is true: O invagiantion is folding of cells that happens early in the embryonic development O balstocoel is the space in the morula o deuterostome animals will have the mouth first O protostome animals will have the mouth second enertocelous means the splitting of cells in the ectododerm layer which becomes endodermIf activity of the organizer is inhibited, what does the embryo become? A mass of notochord. A mass of mesoderm. A mass of ventral tissue. A fully formed embryo.Which structure of the following forms the embryonic axis? O Primitive streak Notochord O Primitive knot O Primitive yolk sac
- Which of the following structures is not an extra-embryonic membrane of amniotes? Question 17 options: The allantois The pharyngeal cleft The chorion The yolk The amnionFrom a 24-hour chick embryo, provide the answers in the following: Pairs of somites in a 24-hour chick embryo Germ layer/s that forms the head process What begins the formation head of process Germ layer/s that form the proamnion Explain why the notochord is not visible in areas where the somites are seenDuring the embryological development of chordates, the midline dorsal layer of ectoderm folds in on itself, forming a hollow tube (see illustrations above). This tube is the origin of the vertebrae. notochord. nerve cord. digestive tract. blood vessels.
- The nervous system is derived from ectoderm endoderm mesoderm All of the above: it depends on whether the animal is a protostome or a deuterostome QUESTION 7 Planarians lack dedicated respiratory and circulatory systems because none of their cells are far removed from the gastrovascular cavity or from the external environment. they lack mesoderm as embryos and therefore lack the adult tissues derived from mesoderm. their flame bulbs can carry out respiratory and circulatory functions. their pseudocoelom carries out these functions. QUESTION 8 Animals with bilateral symmetry can be divided into similar halves by any plane through the longitudinal axis. are usually very slow-moving organisms. are relatively simple in structure. are better adapted for forward movement than radially symmetrical organisms. Help with these…Which choice below shows a correct order of events during development? Gastrula, blastula, neural tube closure, and primary vesicle formation. Blastula, neuroepithelial cell proliferation, axonogenesis and synapse maturation. Gastrula, dendritogenesis, neural tube closure and synapse formation. Neural tube closure, notochord formation, dendritogenesis and synapse formation. Axonogenesis, neuronal migration, synapse maturation, synaptic specializationThe diagram shows various stages of embryonic development in 5 vertebrate species. Which of the following statements is supported by this diagram? salamander tortoise chicken human O Different animals go through similar stages of development during their embryonic stages. O Humans go through more stages of development than other animals. O The developmental stages of animals are very different: they have no similarities
- Which of the following does a fate map of an embryo show?A. differences in developmental potential between cellsB. to what tissues cells will contribute later in developmentC. where key signaling centers are locatedD. differences in developmental competence between cellsIn the development of the nervous system, one of the following is false? The neural tube maintains temporary contact with the yolk sac cavity via neuropores. O a. O b. The neural tube develops from ectoderm. O c. The neural groove forms from the neural plate. d. The neural folds are composed of neuroectoderm cells. O e. The ectoderm fuse to cover the neural crest & the neural tube is the surface ectoderm Clear my choice marks Jump to... ©2020 SKITCE-AQU/Powered by Moodle A https://www.alguds.edu eclass@alguds.eduTadpole is the developing stage of which of these: I. Dogs II. Cats III. Frogs IV. Humans