Bio Exam 4

Which of the following animal groups is entirely aquatic? Nematoda Crustacea Echinodermata Mollusca

Some species of rotifers consist solely of females. Their method of reproduction is described as _____.

The animal phylum most like the protists that gave rise to the animal kingdom is _____.

Which of the following is a characteristic of cnidarians?

A marine biologist dredges up a small animal from the bottom of the ocean. It is uniformly segmented, with short, stiff appendages and soft, flexible skin. It has a complete digestive system and a closed circulatory system, plus multiple true coeloms. Based on this, you determine that the animal must be a(n) _____.

Which of the following is true of annelids?

Members of the phylum Mollusca _____.

Ectoprocts and brachiopods are collectively referred to as __________.

Which of the following is characteristic of the phylum Platyhelminthes?

Nematodes and arthropods are the largest ecdysozoan phyla. Which of the following statements are true? -Nematodes possess a closed circulatory system. -Some nematodes are parasitic on humans. -Both nematodes and arthropods have segmented body plans. -Nematodes are acoelomate, whereas arthropods are coelomate. -Both nematodes and arthropods possess an external covering, or cuticle. -Arthropods possess an open circulatory system. -Arthropods are named for their jointed appendages. -The cuticle in nematodes lengthens as the animal grows. -Both nematodes and arthropods must molt in order to increase in size.

Which of the following are thought to be most closely related to humans?

Which of the following combinations of phylum and description is incorrect? -Platyhelminthes-flatworms, gastrovascular cavity, acoelomate -Cnidaria-radial symmetry, polyp and medusa body forms -Nematoda-roundworms, pseudocoelomate -Porifera-gastrovascular cavity, coelom present -Echinodermata-bilateral symmetry as a larva, coelom present

Which phylum is characterized by animals that have a segmented body?

Which of the following is most likely to be aquatic?

Which characteristic is shared by cnidarians and flatworms?

Large animals need specialized organs for gas exchange because ________.

Which one of these mollusk groups can be classified as suspension feeders? bivalves chitons cephalopods gastropods

Which of the following organisms would you expect to have the largest surface-area-to-volume ratio? Assume that all of the following are the same total length. a mollusc an annelid an arthropod a platyhelminth

What would be the best anatomical feature to look for to distinguish a gastropod from a chiton?

You find what you believe is a new species of animal. Which of the following characteristics would enable you to argue that it is more closely related to a flatworm than it is to a roundworm? It has no coelom. It has a mouth and an anus. It is a suspension feeder. It is shaped like a worm.

The heartworms that can accumulate within the hearts of dogs and other mammals have a pseudocoelom, an alimentary canal, and an outer covering that is occasionally shed. To which phylum does the heartworm belong?

Nematodes and arthropods both ________.

Arthropod exoskeletons and mollusc shells both ________.

Which of the following statements is correct with respect to the evolutionary relationship between chordates and invertebrates? -Chordates evolved from echinoderms. -Chordates are most closely related to the tunicate-type of echinoderms. -Chordates are most closely related to arthropods. -Chordates are more closely related to echinoderms than to arthropods.

Which of the following combinations correctly matches a phylum to its description? Nematoda - segmented worms, closed circulatory system Cnidaria - flatworms, gastrovascular cavity, acoelomate Echinodermata - bilateral symmetry as a larva, water vascular system Platyhelminthes - radial symmetry, polyp and medusa body forms

Which 3 phylum has a gastorvascular cavity

What is a free living Plathyhelminthe

What has a mouth/anaus + gastrovascular cavity

Plathyhelminthe common name

A parasitic Plathyhelminthe

Common name for Nematoda

What makes up the alimentary canal and which phyla does it belong too?

Which type of worm can be different sexes by tail shape?

Common Name for Annelida

Species found in Plathyhelminthes

Species found in Annelida

Body cavity: Only 2 phylum that are Acoelomate, The rest are__________

body cavity: only 3 Phylum that is Pseudocoelomate

Development: only to find some that are deuterostome's

Circ. Sys? Arthropoda

Circ. Sys? Annelida

Circ. Sys? Chitions

Circ. Sys? Gastropods

Circ. Sys? Cephalaopods

Circ. Sys? Bivalves

Circ. Sys? Hemichordata

Circ. Sys? Choordata