Biology Chapter 28-2 Flashcards

Arthropods are classified based on the number and structure of their body segments and appendages, specifically their mouthparts.

They have two pairs of branched antennae, two or three body sections, and chewing mouthparts called mandibles.

They have mouthparts called chelicerae, two body sections, and nearly all have four pairs of walking legs.

<p>They have jaws, one pair of antennae, and unbranched appendages.</p> Signup and view all the answers

<p>Formed by fusion of the head with the thorax.</p> Signup and view all the answers

<p>Lies just behind the head and houses most of the internal organs.</p> Signup and view all the answers

<p>Posterior part of the body.</p> Signup and view all the answers

<p>Part of the exoskeleton that covers the cephalothorax.</p> Signup and view all the answers

<p>The mouthpart adapted for biting and grinding food.</p> Signup and view all the answers

<p>The first pair of legs in crayfishes; they bear large claws that are modified to catch, pick up, crush, and cut food.</p> Signup and view all the answers

<p>Flipperlike appendages used for swimming.</p> Signup and view all the answers

<p>Contains fangs and is used to stab and paralyze prey.</p> Signup and view all the answers

<p>Longer than the chelicerae and are usually modified to grab prey.</p> Signup and view all the answers

<p>Organs that contain silk glands.</p> Signup and view all the answers