Lab 9 KINGDOM ANIMALIA: ECDYSOZOANS - NEMATODA, ONYCHOPORA, TARDIGRADA & ARTHROPODA

Exoskeleton

A hard outer covering that protects and supports an animal’s body

FILL: These animals all belong to the phylum Arthropoda. They are known for having hard outer __________.

Exoskeletons

Chiton

A protein that makes the exoskeleton hard

Pedipalps

Small appendages near the mouth used for sensing or holding food

Mandibles

Jaw-like structures used to bite or chew food

Antennae

Long feelers on the head used for sensing (touch, smell, movement)

Antennules

The smaller, first pair of antennae on crustaceans

Maxillae

Mouthparts that help move food into the mouth

Maxillipeds

Leg-like appendages that help hold and handle food (found on crustaceans)

Antennae

Long feelers that sense touch and smell

Antennules

Small feelers that help with balance and sensing chemicals

Head

Front part of the body with brain, eyes, and mouthparts

Thorax

Middle part of the body where legs and wings attach

Abdomen

Back part of the body containing digestive and reproductive organs

Cephalothorax

Head and thorax fused together into one section

Labium

Lower “lip” that helps hold or manipulate food

Chelicerae

Claw-like mouthparts used to grasp or cut food

Antennae

Long sensory appendages that detect environmental cues

Instars

Different growth stages of an insect between molts

Metamorphosis

Process of an animal changing body form as it grows

Complete

Metamorphosis with egg → larva → pupa → adult

Incomplete

Metamorphosis with egg → nymph → adult, without pupal stage