Handout Title: Exam 2 Practice
Supplemental Instruction
Iowa State University
Leader:
Course:
Instructor:
Date:
Cody
Biology 211 (1)
Dr. Serb
10/17/10
1. A radula is used by____ for_____.
a. jellyfish:stinging
b. starfish:moving
c. plants:flowering
d. mollusks:feeding
2. If an animal is cephalized, it ___
a. has an odd number of chromosomes
b. has radial symmetry.
c. has head.
d. has tentacles.
3. Animals with a coelem are all ___.
a. protostomes
b. radially symmetrical
c. triploblastic
d. deuterostomes
4. You discover a flagellated free-floating larvae while swimming near a coral reef. You
capture one and put it in a salt-water aquarium and observe its development. Once it
reaches adulthood you notice an osculum, choanocytes and amoebocytes within the body
of the organism. You have a ___ in your aquarium.
a. sponge
b. clam
c. jellyfish
d. echinoderm
5. Which of the following is NOT a trait shared by all chordates at some point in their lives?
a. pharyngeal slits
b. cephalization
c. muscular post-anal tail
d. dorsal hollow nerve cord
e. notochord
6. Which groups of animals have an amniotic egg?
a. Amphibians, Reptiles, Mammals
b. Amphibians and Reptiles
c. Mammals, Tunicates, Birds
d. Birds, Mammals, Reptiles
7. Which of the following is NOT a characteristic of nematodes?
a. They shed their cuticle as they grow.
b. They are protostomes.
c. They have a true coelem.
d. They are extremely abundant in soil.
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8. Which of the following are characteristics of arthropods: 1-protostome
development, 2-bilateral symmetry, 3- a pseudocoelom, 4-three embryonic germ
layers, 5- a closed circulatory system
a. 1 and 2
b. 1, 2, and 4
c. 2 and 3
d. 2, 3, and 5
9. Among the characteristics unique in animals is
a. gastrulation
b. multicellularity
c. sexual reproduction
d. heterotrophic nutrition
10. The main difference between sponges and other animal phyla is based mainly on the
absence versus the presence of
a. a body cavity
b. a complete digestive tract
c. a circulatory system
d. true tissues
11. Acoelomates are characterized by
a. the absence of a brain
b. the absence of mesoderm
c. a solid body without a cavity surrounding internal organs
d. deuterstome development
12. Among the invertebrate phyla, phylum Arthropoda is unique in possessing members that
have
a. a cuticle.
b. a ventral nerve cord.
c. open circulation.
d. wings.
13. A shared derived characteristic for members of the arthropod subgroup that includes
spiders would be the presence of
a. chelicerae.
b. an open circulatory system.
c. an exoskeleton.
d. a cuticle.
14. A terrestrial animal species is discovered with the following larval characteristics:
exoskeleton, system of tubes for gas exchange, and modified segmentation. A
knowledgeable zoologist should predict that its adults would also feature
a. eight legs.
b. an open circulatory system.
c. a sessile lifestyle.
d. two pairs of antennae.
15. A land snail, a clam, and an octopus all share
a. a mantle
b. a radula
c. gills
d. distinct cephalization
16. Which phylum is characterized by animals that have a segmented body?
a. cnidaria
b. platyhelminthes
c. arthropoda
d. mollusca
17. Why must a parasite produce a lot of offspring?
a. because the probability of a single offspring getting into the final host is low.
b. because there is no energetic cost to produce lots of offspring.
c. because the probability of a single offspring getting into the final host is high.
d. because it is easy for offspring to move through the environment
18. Which of the following combinations of phylum and description is incorrect?
a. Echinodermata-bilateral symmetry as a larva, coelem present.
b. Nematoda-roundworms, psuedocoelomate.
c. Cnidaria-radial symmetry, polyp and medusa body forms.
d. Platyhelminthes-flatworms, coelomates, gastrovascular cavity
19. What’s the difference between open and closed circulatory systems?
20. How will you tell were the intermediate host and the final host are on a CDC life cycle
diagram?
21. What’s the difference between deuterostomes and protostomes?