CH. 31 BIO II STUDY GUIDE (Ecdysozoa)

Complete ____ reduces competition among insects within the same species; larval forms do not compete with adults for food or habitats.

metamorphosis

Arthropods with mandibles, a single pair of antennae, and two legs on most body segments are:

millipedes.

Segmentation in arthropods differs from that of annelids because arthropod segments are:

more specialized.

Which arthropods have mandibles, gills, excretory glands, and statocysts?

crustaceans

A nauplius larva is characteristic of:

crustaceans.

Which of the following statements about arthropods is FALSE? a. Arthropods have a true coelom b. Arthropods have an exoskeleton. c. Arthropods display segmentation. d. Arthropods have an open circulatory system. e. Arthropods have an incomplete digestive tract.

e. Arthropods have an incomplete digestive tract.

Which class of animals has the largest number of species?

Insecta

You have a sample of cat emesis (vomit) and find worms in the sample. The cylindrical worms are long and slender, pointed at each end, with no other distinguishing characteristics. You conclude they are members of which phylum?

Nematoda

True or False: Members of the Ecdysozoa clade are characterized by having a cuticle.

True

True or False: A member of subphylum Chelicerata is a(n) spider.

True

True or False: Malpighian tubules are used for excretion.

True

The phylum name Arthropoda refers to:

jointed appendages.

Gas exchange in terrestrial insects is accomplished through:

the use of tracheae.

The ____ are very common arthropod Paleozoic fossils, and are extinct today.

trilobites

Which is a unique adaptation in insects not found in any other arthropod?

wings

True or False: Members of phylum Arthropoda have paired, jointed appendages.

True

Which arthropod has chelicerae, pedipalps, and silk glands?

spider