MCQ
Which pair of rib not connected ventrally?
- A$3^{rd}$ pair.
- B$7^{th}$ pair
- C$10^{th}$ pair
- ✓$12^{th}$ pair
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$\begin{array}{|l|l|} \hline Column\,\,-\,\,I & Column\,\,-\,\,II \\ \hline (1)\,\,Scolidon & (p)\,\,Saw\,\,fish \\ \hline (2)\,\,Pristis & (q)\,\,Sting\,\,fish \\ \hline (3)\,\,Carcharodon & (r)\,\,Dog\,\,fish \\ \hline (4)\,\,Trygon & (s)\,\,Great\,\,white\,\,shark \\ \hline \end{array}$
$II. $ $Z-$ lines back to their original position
$III.$ Masking of actin filament
$IV.$ Relaxation of muscles
Arrange the above given steps in the sequence of event from first to last