In the cerebrum of a rabbit,the gyri and sulc | vedclass

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(A) The cerebrum of mammals is characterized by the presence of folds and grooves on its surface to increase the surface area for more neurons. These

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less developed

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(A) The cerebrum of mammals is characterized by the presence of folds and grooves on its surface to increase the surface area for more neurons. These folds are called $gyri$ (ridges) and the grooves between them are called $sulci$. In lower mammals like rabbits,these $gyri$ and $sulci$ are present but are less developed compared to the highly convoluted and complex cerebral cortex found in humans and other primates. Therefore,they are considered less developed.

Column $1$	Column $2$
$(a)$ Cervical nerves	$(i)$ $5$ pairs
$(b)$ Thoracic nerves	$(ii)$ $1$ pair
$(c)$ Sacral nerves	$(iii)$ $12$ pairs
$(d)$ Coccygeal nerves	$(iv)$ $8$ pairs

In the cerebrum of a rabbit,the gyri and sulci are...

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Match the spinal nerves in Column $1$ with their respective pairs in Column $2$ and select the correct option.
Column $1$ Column $2$
$(a)$ Cervical nerves $(i)$ $5$ pairs
$(b)$ Thoracic nerves $(ii)$ $1$ pair
$(c)$ Sacral nerves $(iii)$ $12$ pairs
$(d)$ Coccygeal nerves $(iv)$ $8$ pairs

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