Statement X: Boat-shaped body,skin covered wi | vedclass

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(C) Statement $X$ describes the characteristic features of the class $Chondrichthyes$ (cartilaginous fishes),which include a streamlined,boat-shaped b

Vedclass · Accepted Answer

Both statement $X$ and statement $Y$ are correct. Both are associated with the same class.

Vedclass · Answer

(C) Statement $X$ describes the characteristic features of the class $Chondrichthyes$ (cartilaginous fishes),which include a streamlined,boat-shaped body and skin covered with placoid scales.Statement $Y$ also describes the characteristics of the class $Chondrichthyes$,where the mouth is located ventrally and the jaws are powerful and toothed.Since both statements describe the diagnostic features of the class $Chondrichthyes$,both statements are correct and belong to the same class.

Column-$I$	Column-$II$
$(1)$ $Scoliodon$	$(p)$ $Saw$ $fish$
$(2)$ $Pristis$	$(q)$ $Sting$ $ray$
$(3)$ $Carcharodon$	$(r)$ $Dog$ $fish$
$(4)$ $Trygon$	$(s)$ $Great$ $white$ $shark$

Statement $X$: Boat-shaped body,skin covered with placoid scales.
Statement $Y$: Mouth is generally ventral,jaws are generally toothed.

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Match the following:
Column-$I$ Column-$II$
$(1)$ $Scoliodon$ $(p)$ $Saw$ $fish$
$(2)$ $Pristis$ $(q)$ $Sting$ $ray$
$(3)$ $Carcharodon$ $(r)$ $Dog$ $fish$
$(4)$ $Trygon$ $(s)$ $Great$ $white$ $shark$

Which of the following has a cartilaginous and fibrous endoskeleton?

Which fish has the ability to breathe air?

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Statement $X$: Boat-shaped body,skin covered with placoid scales.Statement $Y$: Mouth is generally ventral,jaws are generally toothed.