Download ANIMAL SYSTEMS TEST (ch

ANIMAL SYSTEMS TEST (ch. 26-33)
Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
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1. Which of the following group of invertebrates are deuterostomes?
a. worms (annelida, platyhelminthes,
c. mollusca
nematoda.)
b. arthropoda
d. echinodermata
2. The classification of an animal as a deuterostome or a protostome is based on
a. its body symmetry.
c. what happens to the blastopore.
b. whether or not it has a coelom.
d. the number of germ layers it has.
3. In a protostome, the blastopore becomes a(an)
a. mouth.
c. zygote.
b. anus.
d. blastula.
4. A body cavity that forms between the germ layers is called a(an)
a. coelom.
c. mesoderm.
b. blastopore.
d. ectoderm.
5. An acoelomate is an animal that has
a. a body cavity lined with endoderm and ectoderm.
b. a body cavity partially lined with mesoderm.
c. a body cavity completely lined with mesoderm.
d. no body cavity between the germ layers.
6. Some type of body symmetry is found in all invertebrates EXCEPT
a. cnidarians.
c. porifera
b. mollusks.
d. platyhelminthes.
7. Which invertebrates exhibit radial symmetry?
a. cnidarians and echinoderms
c. nematoda and annelida
b. porifera and chordata
d. mollusks and arthropods
8. Cephalization refers to the
a. division of the body into upper and lower sides.
b. concentration of sense organs and nerve cells in the front of the body.
c. joining together of specialized cells to form tissues.
d. formation of a body cavity between the germ layers.
9. Animal X has no coelom and no cephalization. Animal X is either a
a. mollusk or an arthropod.
c. mollusca or an echinodermata.
b. flatworm or a nematoda
d. porifera or a cnidarian.
10. Animal Y has three germ layers, bilateral symmetry, and no coelom. Animal Y is a(an)
a. porifera
c. platyhelminthes.
b. arthropoda.
d. mollusca.
Figure 29–1
____ 11. In Figure 29–1, the space labeled X is called a
a. protostome.
c. coelom.
b. deuterostome.
d. pseudocoelom.
____ 12. One animal that has a body construction like that shown in Figure 29–1 is a
a. flatworm.
c. sponge.
b. roundworm.
d. jellyfish.
____ 13. Which of the following characteristics is NOT found in any radially symmetrical invertebrate?
a. cephalization
c. specialized organs
b. specialized cells
d. a coelom
____ 14. One way to distinguish a roundworm from an annelid is to
a. count their germ layers.
b. examine their body symmetry.
c. compare the structure of their body cavities.
d. determine whether they have cephalization.
____ 15. Which of the following invertebrates has a closed circulatory system, nephridia, and a hydrostatic skeleton?
a. a chelicerata
c. a platyhelminthes
b. an annelid
d. a chordata
____ 16. If an animal has a digestive tract, an open circulatory system, and an exoskeleton, it could be a(an)
a. arthropod.
c. gastropoda.
b. mammalia.
d. aves.
____ 17. Invertebrates that break down their food through intracellular digestion include
a. annelids.
c. arthropods.
b. mollusks.
d. sponges.
____ 18. Which invertebrate has a gastrovascular cavity?
a. chilopoda
c. cnidarian
b. diplopoda
d. uniramia
____ 19. A true digestive tract is found in
a. annelids.
c. cnidarians.
b. sponges.
d. flatworms.
____ 20. One difference between a gastrovascular cavity and a digestive tract is that
a. a gastrovascular cavity has specialized regions, but a digestive tract does not.
b. a gastrovascular cavity has one opening, and a digestive tract has two.
c. digestion is extracellular in a gastrovascular cavity and intracellular in a digestive tract.
d. food can be processed more efficiently in a gastrovascular cavity than in a digestive tract.
____ 21. Gases diffuse most efficiently across a respiratory membrane if the membrane is
a. thick and dry.
c. thick and moist.
b. thin and dry.
d. thin and moist.
____ 22. In insects, gas exchange takes place through a network of
a. tracheal tubes.
c. book lungs.
b. mantle cavities.
d. blood vessels.
____ 23. Most flatworms are small and very thin. Therefore, they can supply their cells with oxygen and remove
metabolic wastes by means of
a. simple diffusion between body surface and the environment.
b. an open circulatory system without a heart.
c. an open circulatory system with one heart.
d. a closed circulatory system with one heart.
____ 24. The distinguishing feature of a closed circulatory system is that
a. it does not include a heart.
b. blood is contained within vessels that extend throughout the body.
c. blood is kept at low pressure.
d. blood is circulated less efficiently than in an open circulatory system.
____ 25. In an open circulatory system, blood
a. never leaves the heart.
b. does not come in direct contact with the tissues.
c. is always contained within a system of blood vessels.
d. is pumped through a system of sinuses.
____ 26. An example of an animal with an open circulatory system is a(an)
a. sponge.
c. arthropod and mollusca
b. cnidarian and echinodermata.
d. annelid and chordata.
____ 27. The giant squid is a large, very active invertebrate. What type of circulatory system do you think it has?
a. open circulatory system
c. water vascular system
b. closed circulatory system
d. no circulatory system
____ 28. Which of the following is a function of an excretory system?
a. eliminating nitrogenous wastes from the body
b. exchanging oxygen and carbon dioxide with the environment
c. gathering and processing information from the environment
d. obtaining and digesting food
____ 29. Which structures are NOT part of an excretory system?
a. flame cells
c. Malpighian tubules
b. spiracles
d. nephridia
____ 30. What would happen to a flatworm if its flame cells stopped functioning?
a. It would be unable to pump blood.
c. It would swell.
b. It would accumulate urea.
d. It would dry up.
____ 31. Which of the following best describes uric acid?
a. more toxic than ammonia, leaves the body through excretory pores
b. more toxic than ammonia, leaves the body through the rectum
c. less toxic than ammonia, leaves the body through excretory pores
d. less toxic than ammonia, leaves the body through the rectum
____ 32. Expelling uric acid from the body and having a respiratory surface that is covered with mucus are two ways
that some invertebrates can
a. process food more efficiently.
c. respond to their environment.
b. reduce water loss.
d. supply oxygen to their cells.
____ 33. The eyespots of flatworms can
a. detect the presence of light.
c. detect color.
b. detect motion.
d. form images.
____ 34. An example of an invertebrate with a hydrostatic skeleton is a(an)
____ 35.
____ 36.
____ 37.
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____ 39.
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____ 41.
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____ 44.
____ 45.
____ 46.
a. spider.
c. sea star.
b. sponge.
d. earthworm.
An endoskeleton is a
a. shell of a mollusk.
b. fluid-filled body cavity that supports the muscles.
c. structural support located inside the body.
d. hard body covering made of chitin.
Which of the following invertebrates would be most likely to reproduce by external fertilization?
a. an arachnid
c. a land snail
b. an insect
d. a cnidarian
Which statement refers to sexual reproduction?
a. All offspring are genetically identical to the parent.
b. Offspring are produced from the fusion of male and female gametes.
c. An organism breaks into pieces that grow into new individuals.
d. New individuals are produced from outgrowths of the parent’s body wall.
Which classes have a skeleton made of mostly cartilage?
a. chephalopoda
c. chondrichtheys
b. aves
d. mammalia
Ossicles are
a. calcified plates found in the echinoderms c. bone material found in osteichthyes
b. crystals found in the porifera
d. feathers found in aves
Vertebrae are characteristic of
a. worms.
c. vertebrates only.
b. all chordates.
d. reptiles only.
Essential life functions are carried out most efficiently when an animal’s internal body temperature is
a. insulated.
c. the same as its external temperature.
b. regulated by the environment.
d. within a particular “operating range.”
In vertebrates, each of the following is important in regulating body temperature EXCEPT a
a. source of heat.
c. long digestive tract.
b. way of conserving heat.
d. method of eliminating heat.
The main difference between ectotherms and endotherms is
a. the source of their body heat.
b. how they obtain food to provide for their metabolism.
c. whether they control their body temperature.
d. whether they conserve or eliminate body heat.
What is the general rule regarding respiratory organs in chordates?
a. Aquatic chordates use lungs, and land vertebrates use gills.
b. Aquatic chordates use lungs and gills, and land vertebrates use gills.
c. Aquatic chordates use gills, and land vertebrates use lungs.
d. Aquatic chordates use gills, and land vertebrates use lungs and gills.
Chordate respiratory structures include all of the following EXCEPT
a. simple air sacs.
c. the surface of the skin.
b. the medulla oblongata.
d. the lining of the mouth.
Which of the following happens in the alveoli?
a. Oxygen diffuses into the blood, and carbon dioxide diffuses into the air.
b. Carbon dioxide diffuses into the blood, and oxygen diffuses into the air.
c. Both oxygen and carbon dioxide diffuse into the blood.
d. Both oxygen and carbon dioxide diffuse into the air.
____ 47. A single-loop circulatory system is characteristic of
a. fishes.
c. most reptiles.
b. amphibians.
d. crocodilians.
____ 48. If a vertebrate has a circulatory system that carries oxygen-rich blood directly from the heart to the muscles,
that vertebrate could be a
a. bony fish.
c. larval amphibian.
b. cartilaginous fish.
d. mammal.
____ 49. Sexual reproduction occurs in
a. fishes.
c. mammals.
b. amphibians.
d. all of the above
____ 50. Antagonistic muscle groups are found in the chordates. Which statement is TRUE.
a. Muscles can only contract and pull.
c. Antagonistic muscle groups are made of
flexors and extensors.
b. Muscles are located on both sides of a
d. all of the above are true.
joint in order to pull the joint both
directions.