fivefingers - cuny bio202 answers

BIO 202 LAB PRACTICE TEST

1. (1)

Amphioxus is an example of a:

	Tunicate
	Lancelet
	Hagfish
	Amphibian
	Reptile

2. (1)

A bony or cartilaginous structure that surrounds and protects the brain of chordates is a(an):

	Notochord
	Cranium
	Cerebrum
	Meninges
	Amnion

3. (1)

A sponge actually feeds by

	acting as a net in a current that sweeps food particles through it.
	squeezing the spongocoel cavity and sucking debris in and out through the osculum.
	the beating of the flagella of collar cells, forming a current; food is absorbed by collar cells.
	the beating collar cells form a current from osculum to pores; the food is engulfed by amoebocytes in the central cavity of the sponge.
	water the moves gently through the sponge and the amoebocytes that engulf passing food.

4. (1)

Which of the following types of skeletal material is NOT found in at least some sponges?

	calcium carbonate
	silica
	spicules
	spongin
	muscle

5. (1)

The stinging cells or nematocysts are characteristic of

	sponges.
	clams.
	cnidarians.
	flatworms.
	roundworms.

6. (1)

Both corals and calcareous sponges have calcium carbonate structures. What is the relationship between these two groups?

	The calcareous sponges were ancestors of the corals.
	The corals were ancestors of the calcareous sponges.
	Both use the calcium carbonate to form a rock-like or crusty basal skeletal structure.
	The corals are actually colonial forms of the independent calcareous sponges.
	The sponges use calcium carbonate to form sharp spicules while the corals independently use the same material to form a skeleton.

7. (1)

A floating Portuguese man-of-war is

	a cubozoan.
	merely an inflated, noncircular jellyfish.
	a free-swimming polyp in the hydra group.
	the first animal with complete organ systems.
	a colony composed of different types of individuals.

8. (1)

A hydra moves via

	nematocysts.
	alternation of generations.
	contraction of the nerve net.
	muscular cells in the epidermis.
	muscular fibers in the mesoglea.

9. (1)

Sea anemones belong to the phylum

	Porifera.
	Platyhelminthes.
	Cnidaria.
	Nematoda.
	Mollusca.

10. (1)

In flame cells

	light is detected.
	ciliated sperm are stored.
	undigested food is expelled.
	slow fires actually burn food for energy.
	cilia drive fluids through tubules for excretion of excess water.

11. (1)

The free-swimming, ciliated stage that hatches from a trematode egg is the

	larva.
	sporocyst.
	nematocyst.
	scolex.
	proglottid.

12. (1)

The ____ of the tapeworm contains both male and female sex organs and becomes filled with developing embryos.

	proglottids
	scolex
	cyst
	gastrovascular cavity
	nematocyst

13. (1)

Tapeworms are specialized for parasitism by an excessive development of which system?

	muscular
	reproductive
	excretory
	circulatory
	digestive

14. (1)

Ascaris is considered to be a(n)

	flatworm.
	earthworm.
	roundworm.
	cnidarian.
	arthropod.

15. (1)

In the life cycle of Ascaris, the final place of residence of adult worms is

	the lungs of humans.
	the liver of humans.
	outside the host.
	the intestine of humans.
	under the skin of humans.

16. (1)

How could you possibly become infected with adult tapeworms?

	eating insufficiently cooked pork
	being bitten by a mosquito
	ingesting eggs in contaminated water
	eating freshly peeled fruit
	wading in contaminated water

17. (1)

The head region of a tapeworm is called the

	proglottid.
	cercaria.
	sporocyst.
	scolex.
	glycocalyx.

18. (1)

Larval Trichinella worms live in the

	liver.
	lungs.
	lymph glands.
	skeletal muscle of pork.
	water.

19. (1)

Clams, snails, sea slugs, and octopuses belong to the phylum

	Annelida.
	Mollusca.
	Porifera.
	Platyhelminthes.
	Arthropoda.

20. (1)

Fertilization in the earthworm is accomplished by the use of the

	nephridia.
	clitellum.
	flame cells.
	trachea.
	typhlosole.

21. (1)

Earthworms are

	annelids.
	molluscs.
	echinoderms.
	platyhelminthes.
	arthropods.

22. (1)

Earthworms secrete the enzyme cellulase to digest the cell walls of plant root fibers consumed with soil. This enzyme would most likely be found in the

	nephridia.
	buccal cavity.
	crop.
	intestine.
	esophagus.

23. (1)

When an earthworm secretes a slime layer to receive eggs and sperm and form a ''cocoon,'' this secretion is produced by the

	annulations.
	peritoneum.
	clitellum.
	nephridium.
	prostomium.

24. (1)

The largest animal group, both in number of species and number of individuals, is the

	annelids.
	crustacea.
	insects.
	reptiles.
	fishes.

25. (1)

____ are animals that have three pairs of legs, a tympanum for reception of sound waves, and Malpighian tubules for excretion.

	Starfish
	Lancelets
	Crayfish
	Grasshoppers
	Earthworms

ANSWERS