Skeletal System: Bones, Joints, Cartilage · NCERT Biology

Which ribs are known as 'floating ribs' because they are not connected ventrally to the sternum?

  1. 8th and 9th rib pairs
  2. 9th and 10th rib pairs
  3. 11th and 12th pairs
  4. 7th and 8th rib pairs
Show answer and explanation

Correct answer: 11th and 12th pairs

The last two pairs of ribs (11th and 12th) are not connected ventrally to either the sternum or another rib. Because they remain free at their anterior ends, they are termed floating ribs.

Difficulty: Medium Question 5 of 20

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