Arthropods have this type of circulatory system.

Aquatic arthropods use these for respiration

Sac-like organs that extract wastes from blood in terrestrial arthropods.

Arthropods have a well developed nervous system with sense organs, a brain, and a ____________ nerve cord with several ganglia that coordinate movement.

Muscles generate movement by pulling on exoskeleton around these?

In terrestrial arthropods ______________ reproduction occurs in 2 ways and both involve ____________ fertilization.

Shedding of the entire exoskeleton and the manufacturing of a larger one that fits the growing arthropod.

While new exoskeleton is soft arthropods fill with ___________ to allow room for growth.

Crayfish belong to Phylum Arthropoda Class _____?

Body section of the crayfish that is formed by the fusion of the head and thorax.

Part of the exoskeleton that covers the cephalothorax.

A crayfish has __________ around mouth that are used to bite and crush food, found in head segment 3.

_________ are found in thoracic segment 9 and are used for self-defense and manipulating food.

Found in abdominal segments 14 - 18, create water currents, enhance air movement to gills, hold eggs in females, and are modified as reproductive structures in males.

Grasshoppers belong to Phylum Arthropoda, Class ___________?

All insects have _____ pairs of legs.

The 3 body parts of an insect.

All insects have _____ pairs of wings.

The abdomen of an insect houses the ?

Insects have ______ pair of antennae.

Insect antennae are _________ organs they use for touch, taste, smell, and hearing.