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Question 17 options:
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The allantois
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The pharyngeal cleft
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The chorion
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The yolk
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The amnion
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- 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…What is the space Limited by the exo-coelomic membrane termed O primitive yolk sac Amniotic cavity Blastocyst TrophoblastWhich combination of characteristics is typical of the development of a deuterostome? Question 9 options: Radial and indeterminate segmentation; solid masses of mesoderm split to form the coelom; mouth formed from the blastopore. Spiral and determinate segmentation; formation of the coelom from mesodermal outpocketing of the archenteron; anus formed from the blastopore. Radial and indeterminate segmentation; formation of the coelora from mesodermal outpocketing of the archenteron; anus formed from the blastopore. Spiral and determinate segmentation; solid masses of mesoderm split and form the coelom; mouth formed from the blastopore. Which words fill the open spaces in the following sentences. Let's assume that hair might have originally arisen in the context of selection for loss of heat, and only later was co-opted (used) to preserve heat. In this case, hair would should be considered an (word 1) for heat loss and an (word 2) to preserve heat. Question 10 options: Word 1 =…
- Which of the following structures give rise to pharyngeal (branchial) arches cranial nerves O Neural tube Neural crest cells Pharyngeal pouch endoderm Pharyngeal cleft ectodermWhich of the following is the latest stage of embryonic development (of this list)? blastula morula zygote 8 cell stage gastrulaWhich structure of the following forms the embryonic axis? O Primitive streak Notochord O Primitive knot O Primitive yolk sac
- What is the thickened dark linear band which appears caudally in the midline of the dorsum of embryonic disc termed * O Notochord Neural tube Primitive streak Primitive yolk sacQuestion 11 Which is TRUE for embryonic development of protostomes? O Lacking three germ layers O indeterminate cellular development O blastopore develops into a mouth O radial cleavage O mesoderm develops from folds of the archenteron surrounding the coelomWhich 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 endoderm
- If a deuterostome embryo split apart and one of the cells broke away early in it's development, then; The embryo would die, however the cell that broke away could survive and grow into a new individual The embryo would cease development and die Both the embryo and the cell that broke away could develop into separate animalsQuestion 28 Amphibians Reptiles Birds Mammals extinct salamanders frogs turtles |lizards crocodilians birds snakes mammals dinosaurs dinosaurs reptiles & birds mammals aquatic larvae the amniotic egg tetrapod body Refer to the diagram above. What characteristic is shared by amphibians, birds, reptiles, and mammals? tetrapod body aquatic larvae ability to swim amniotic egg ability to fly Timewhat evolutionary advantages does the amniotic egg have? explain how each component of the egg plays a role in survival of the embryo