MCQ
Metanephric kidneys are found in:
- ABirds only.
- BReptiles only.
- CMammals only.
- DAll of these.
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$\begin{array}{|l|l|} \hline Column\,\,I & Column\,\,II \\ \hline P.\,\,Kingdom & 1.\,\,indica \\ \hline Q.\,\,Order & 2.\,\,Musca \\ \hline R.\,\,Famiy & 3.\,\,Fungi \\ \hline S.\,\,Genus & 4.\,\,Canidae \\ \hline T.\,\,Species & 5.\,\,Polymoneales \\ \hline \end{array}$
$P \ \ Q\ \ R \ \ S\ \ T $
$A$. Muscle bundles are held together by collagenous connective tissue layer called fascicle.
$B$. Sarcoplasmic reticulum of muscle fibre is a store house of calcium ions.
$C$. Striated appearance of skeletal muscle fibre is due to distribution pattern of actin and myosin proteins.
$D$. $M$ line is considered as functional unit of contraction called sarcomere.
Choose the most appropriate answer from the options given below: