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$R$ - $AIDS$ is caused by $HIV$.
$\begin{array}{|p{0.3\linewidth}|p{0.6\linewidth}|} \hline Column\,\,-I & Column\,\,-II \\ \hline (a)\,\,Protonephridial & (I)\,\,In\,\,crustaceans\,\,like\,\,prawns. \\ \hline (b)\,\,Nephridia & (II)\,\,In\,\,Platyhelminthes,\,\,rotifers,\,\,amphioxus. \\ \hline (c)\,\,Malpighian\,\,tubules & (III)\,\,In\,\,insects\,\,including\,\,cockroaches. \\ \hline (d)\,\,Green\,\,glands & (IV)\,\,In\,\,earthworms\,\,and\,\,other\,\,annelids \\ \hline \end{array}$
$I.$ pumping of $C a^{2+i i}$ ions in sarcoplasmic reticulum
$II.$ presence of $ATP$
$III.$ confirmational changes in troponin and masking the actin filament
Option containing correct statement is
$I$.Calcitonin regulates the metabolism of calcium. $II$. Oxytocin stimulates contraction of uterine muscles during birth. $III$. Grave's disease is caused by malfunctioning of adrenal gland. $IV$. $ADH$ stimulates absorption of water and increase the urine production.