Exam 32: Protostome Animals

Which of the following insect groups consists of winged species that undergo incomplete metamorphosis and can fold their wings back over their bodies?

Organisms of which group are probably most similar to ancestral arthropods?

A very small animal (about 0.3 mm in length) with fleshy, unjointed legs and living in marine sand is most likely a(n)

The following are all characteristics of earthworms: segmented bodies, a spiral cleavage pattern, a terrestrial lifestyle, a complete gut, a blastopore that develops into a mouth, tight junctions between cells, and bilateral symmetry. In what order did these characteristics evolve?

Some lophotrochozoans have a circular or U-shaped ring of tentacles around the mouth called a _______.

Centipedes and millipedes are _______.

The evolution of a chitinous exoskeleton affected many aspects of arthropod evolution. The aspect that was least affected was the

The mollusks are a very diverse group morphologically, but they share three common morphological traits. Describe these traits and their functions.

Which of the following ecdysozoan groups contains fewer than 100 species?

Squids and octopuses are known as _______ mollusks because of their large heads with associated large, branched feet.

Which of the following animals have complete digestive tracts?

Which of the following is not associated with the rotifers?

Although _______ resemble mollusks superficially, they possess a lophophore and are typically attached to the substrate via a short flexible stalk.

Many lineages of lophotrochozoans have a type of free-living larva known as a

A restaurant appetizer of escargot (snails), clams on the half shell, and calamari (octopus) would contain which types of mollusks?

Which of the following taxa includes more than 10,000 species?

Which one of the following arthropod groups includes the dragonflies?

One chelicerate group, the _______, are important terrestrial predators.

Which of the following is not a characteristic of most insect species?

An animal that has a hemocoel, a chitinous exo-skeleton, and a complete digestive tract would most likely be