A. Name the areas, X and Y in the given diagram.
B. Which parts of nerve tissues are present in X and Y?
Better responses
Exhibited clear understanding of the diagram of the cross-section of spinal cord by identifying X as white matter and Y as grey matter. Such responses mentioned the composition of X as the presence of myelinated nerve fibers or axons and the composition of Y as of nerve cell bodies/ dendrites/ non-myelinated axons or nerves/ axon terminals.
Weaker responses
Identified X and Y as dorsal route, sensory neuron, vertebral column, outer region of spinal cord, muscles, nerve tissue, ligament and ventral route, motor neuron, pituitary gland, interneuron, tissues, mixed nerves, butterfly region, bone marrow respectively. Additionally, in case of composition of X and Y, candidates gave generalised responses such as X and Y are composed of brain tissues, axons, dendrites and cell bodies. Some of the responses were completely irrelevant, e.g., X and Y conduct nerve impulse, they are present in brain, they conduct impulse from brain to spinal cord, the grey color is due to bone marrow, X receives messages while Y transfers messages.
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