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The last two pairs of ribs are not attached in front, so they are called:
AFused back ribs
BFloating ribs
CTrue front ribs
DFalse ribs
Answer & Solution
Correct answer: B. Floating ribs
1. Ribs 11 and 12 do not reach the sternum.
2. They hang free ventrally.
3. So they are floating ribs.
_Source: NCERT Class 11 Biology, Chapter 20, Locomotion and Movement._
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