Phylum Arthropoda

What allows for the growth of arthropods?

• growth of the endoskeleton as the body grows

• Molting of the exoskeleton

• They don't grow

What is the exoskeleton usually made up of?

• Chitin
• Bones
• Cuticle
• Carapace

Which of the following does not characterize artropods?

• An exoskeleton

• An open circulatory system

• An incomplete digestive tract

• Segmentation

True or False: Cephalothorax is the joining of head, thorax and abdomen.

• True

• False

Characteristics of Phylum Arthopoda:

• segmented, coelomate, bilateral symmetry, exoskeleton, jointed appendages
• true segmentation, coelomate, parapodium
• endoskeleton, unbranced appendages, no segmentation, acoelomate
• 3 pair of legs, 3 body segments, exoskeleton, trachae

One advantage of joints is that they __.

• allow powerful movements.
• can only be used in walking.
• allows molting to occur.
• provides protection.

What is molting?

• The process in which arthropods reproduce
• The process in which arthropods shed their outer covering and grow a larger one.
• The process in which larval forms develop into adult forms
• The process in which arthropods breathe

The exoskeleton protects and supports internal tissues and provides for __.

• the attachment of muscles.
• living under water.
• exchange of gases.
• flexibility

The three body segments of an arthropods body are:

• Head, thorax and abdomen

• Head, cephalothorax and abdomen

• cephalothorax, appendages and abdomen

• Cephalothorax and abdomen

Contains many lenses and enables an animal to analyze a fast-changing landscape.

• compound eye
• simple eye
• antennule
• pedipalp