Choose the correct option in respect of characteristics to respective group.
\begin{tabular}{lll... VIDEO
Choose the correct option in respect of characteristics to respective group.
\begin{tabular}{llll}
& \multicolumn{1}{c}{ Cyclostomes } & \multicolumn{1}{c}{ Chondrichthyes } & Osteichthyes \\
I. & Sucking mouth & \multicolumn{1}{c}{ Ventral Mouth } & Terminal mouth \\
II. & Scale absent & Placoid scale & Cycloid / Ctenoid scale \\
III. & Marine & Marine & Fresh water / Marine \\
IV. & \( 6-15 \) pairs of gills & \( 5-7 \) pairs of gills without operculum & 4 pairs of gills with operculum \\
\( \begin{array}{llll}\text { (a) I and II are correct } & \text { (b) I and IV are correct } & \text { (c) All are correct } & \text { (d) Only III is correct }\end{array} \)
\end{tabular}
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