Arthropoda Classes Quiz

Xiphosura

Respiratory organs absent or vestigial. Length of body and abdomen usually much less than one half length of longest leg.

Without any special respiratory organs. Reproductive organs opening into alimentary canal. Very small or microscopic animals with weakly chitinized integument.

<p>It is vermiform and shows many minute transverse wrinkles or annulations. Internal parasites of vertebrates. Without legs in adult.</p> Signup and view all the answers

<p>Crustacea have two pairs of antenna and five or more pairs of legs. They are aquatic.</p> Signup and view all the answers

<p>Bilateral symmetry, distinct body segmentation, sclerotized cuticle, periodic molting, hemocoel body cavity, articulated appendages, and eyes with ocelli.</p> Signup and view all the answers

<p>Legs fleshly with numerous annulations but without any clearly articulated joints</p> Signup and view all the answers

<p>Two pairs of legs on some, usually on most of body segments</p> Signup and view all the answers

<p>Antennae branched apically terminating in three multiarticulate setiform appendages</p> Signup and view all the answers

<p>Legs terminating in a single tarsal claw; first pair of legs modified to form jaw-like poison fangs</p> Signup and view all the answers

<p>With a well-developed respiratory system composed of book lungs or of tubular tracheae opening by spiracles</p> Signup and view all the answers

<p>Three body regions: head, thorax, abdomen</p> Signup and view all the answers