Peripatus is a connecting link between which of the following?

$A$ student has identified a triploblastic,coelomate,segmented animal as an arthropod. Which additional character should the student have verified before identifying that animal as an arthropod?

An arthropod without a true head is

In the housefly, the larva lives in:

An insect differs from a spider in having

$S$ - Statement: Malpighian tubules are the excretory organs in $Arthropoda$.
$R$ - Reason: $Arthropoda$ belongs to the phylum $Mollusca$.