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(B) In $Annelida$,$Nereis$ is an aquatic form which possesses lateral appendages called parapodia,which help in swimming. Thus,option $A$ is correct.I

Vedclass · Accepted Answer

Echinodermata $=$ Body is covered by chitinous exoskeleton

Vedclass · Answer

(B) In $Annelida$,$Nereis$ is an aquatic form which possesses lateral appendages called parapodia,which help in swimming. Thus,option $A$ is correct.In $Echinodermata$,the body is covered by an endoskeleton of calcareous ossicles,not a chitinous exoskeleton. Chitinous exoskeletons are characteristic of the phylum $Arthropoda$. Thus,option $B$ is the incorrect match.In $Aschelminthes$ (roundworms),sexual dimorphism is present where females are generally longer than males. Thus,option $C$ is correct.In $Amphibia$,the body is divisible into head and trunk,and many members have a tail. Thus,option $D$ is correct.

Column-$I$	Column-$II$
$I.$ Platyhelminthes	$p.$ Malpighian tubules
$II.$ Aschelminthes	$q.$ Renette cells
$III.$ Arthropoda	$r.$ Flame cells
$IV.$ Annelida	$s.$ Nephridia

Find out the incorrect match in the following options.

Similar Questions

Match the following columns:
Column-$I$ Column-$II$
$I.$ Platyhelminthes $p.$ Malpighian tubules
$II.$ Aschelminthes $q.$ Renette cells
$III.$ Arthropoda $r.$ Flame cells
$IV.$ Annelida $s.$ Nephridia

Cold-blooded animals are those having

Identify the location and function of the following structures:
$(i)$ Water vascular system
$(ii)$ Cloaca

$A$: Annelids,arthropods,and molluscs are protostomial coelomates.
$R$: All three phyla include members with bilateral symmetry and a true coelom.

Assertion $A$: Fishes possess gills,fins,and scales.
Reason $R$: Fishes are a form of taxon.
Which option is correct for Assertion $A$ and Reason $R$?

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