Classes
Identifying Arthropods
Anatomy
Vocabulary
Misc.
100

This class of arthropods include shrimp, crabs, and lobsters.

What are crustaceans?

100

This class of arthropods has two pairs of antennae, two or three body sections, and five or more pairs of legs.

What are crustaceans?

100

This body structure is the fusion between the thorax and head of some arthropods.

What is the cephalothorax?

100

The process when an arthropod changes from one form to another.

What is metamorphosis?

100

This arthropod can cause Lyme disease in humans.

What are ticks?

200

This class of arthropods include spiders, ticks, and scorpions.

What are arachnids?

200

This class of arthropods have one pair of antennae, three body sections, and three pairs of legs.

What are insects?

200

These body structures help some arthropods obtain food and are used for defense.

What are chelipeds (claws) or mandibles?

200

What material makes up the exoskeleton?

Chitin 

200

Arthropods were the first animals to do this.

What is invade land and sky?

300

This class of arthropods include centipedes.

What is Myriopoda?

300

This specific arthropod has a special organ called a green gland 

Crayfish 

300

This body structure is a waxy, water proof layer that protects the arthropod and prevents the animal from drying out on land.

What is the exoskeleton?

300

An animal with no backbone.

What is an invertebrate?

300

The process by which the outgrown exoskeleton is shed.

What is molting (ecdysis)?

400

This class of arthropods include dragonflies, beetles, and bees.

What is Insecta?

400

This class of arthropods have two body sections, no antennae, and four pairs of legs.

What are arachnids?

400

These body structures contain the arthropods sense organs.

What are the antennae?

400

Having many individual body sections like annelids.

What is segmentation?

400

Arthropods make up this percentage of all animals.

What is 80-90%

500

This class of arthropods includes millipedes.

What is Myriapoda?

500

This specific type of arthropod has eight long legs, no fangs, and only have two eyes

Harvestmen or daddy long legs 

500
Crustaceans have these to help maintain balance in their body and get rid of waste. 

What are green glands?

500

System in which blood can move freely through large cavities within the body rather than strictly veins and arteries.

What is open circulatory system?

500

There are over this many discovered species of arthropods.

What is one million?

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