Class 11 NEET Biology Locomotion and Movement

Question : 23 of 70

Marks: +1, -0

Out of 'X' pairs of ribs in humans only 'Y' pairs are true ribs. Select the option that correctly represents values of X and Y and provides their explanation :

[NEET 2017]

X=12,Y=5 True ribs are attached dorsally to vertebral column and sternum on the two ends
X=24,Y=7 True ribs are dorsally attached to vertebral column but are free on ventral side
X=24,Y=12 True ribs are dorsally attached to vertebral column but are free on ventral side.
X=12,Y=7 True ribs are attached dorsally to vertebral column and ventrally to the sternum

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