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BIO 101 Exam 7

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Question 1 

Which of the following characteristics is NOT true about deuterostomes?

Select one:

a. The second opening during embryonic development becomes the mouth.

b. They include the echinoderms and humans.

c. They have a coelom.

d. They include the simplest of invertebrates.

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Question 2

 

The term "deuterostome" refers to

Select one:

a. having a spiny skin.

b. having three germ layers.

c. possessing a notochord.

d. the second embryonic opening becoming the mouth.

e. the coelom forming by outpocketing of the primitive gut.

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Question 3

 

Which of these parasitic worms is NOT a nematode? 

Select one:

a. Ascaris

b. Trichinella

c. the worm that causes elephantiasis

d. hookworm

e. the worm that causes schistosomiasis

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Question 4

 

Which of the following organisms exhibit radial symmetry as adults?

Select one:

a. flatworms

b. cnidarians

c. roundworms

d. clams

e. fish

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Question 5 

Sea stars reproduce

Select one:

a. by budding.

b. by asexual processes alone.

c. asexually by fragmentation.

d. by sexual processes only.

e. by sexual means and also by asexual fragmentation.

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Question 6

 

Which of the following is correct in matching the common name with a phylum name?

Select one:

a. planarian—Nematoda

b. fluke—Platyhelminthes

c. coral—Porifera

d. roundworm—Cnidaria

e. sponge—Arthropoda

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Question 7

 

Which of these is a bivalve?

Select one:

a. slug

b. octopus

c. earthworm

d. snail

e. oyster

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Question 8

 

How could you possibly become infected with adult tapeworms?

Select one:

a. eating insufficiently cooked pork

b. being bitten by a mosquito

c. ingesting eggs in contaminated water

d. eating freshly peeled fruit

e. wading in contaminated water

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Question 9

 

Which statement is NOT correct about the roundworms?

Select one:

a. There are three layers of tissues in the body.

b. Roundworms have a tube-within-a-tube body plan.

c. There is an internal body cavity called a pseudocoelom.

d. Roundworms have a smooth unsegmented outside body wall.

e. Roundworms are essentially no more than parasitic flatworms that have lost their need to be flat.

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Question 10

 

Which of the following is generally NOT a characteristic of all animals?

Select one:

a. They ingest food that is digested in a central cavity.

b. They produce gametes by meiosis for sexual reproduction.

c. They produce an embryo that undergoes development in stages.

d. Animals range from unspecialized single-celled to specialized multicellular forms.

e. The adult form is diploid.

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Question 11

 

Fertilization in the earthworm is accomplished by the use of the

Select one:

a. nephridia.

b. clitellum.

c. flame cells.

d. trachea.

e. typhlosole.

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Question 12

 

Which of the following organisms show the typical method of acquiring food that is found in animals?

Select one:

a. Euglena, who are autotrophic and heterotrophic.

b. Basidiomycetes, club fungi, who decompose wood and other plant material.

c. Earthworms, annelids, who feed on any available organic matter that they can take into their mouths

d. Volvox, a colonial alga that is autotrophic

e. Archaea, who are chemotrophic.

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Question 13

 

The insect organ most equivalent to the human lung in function is the

Select one:

a. tracheae.

b. midgut.

c. crop.

d. gizzard.

e. Malpighian tubule.

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Question 14

 

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

Select one:

a. Starfish

b. Lancelets

c. Crayfish

d. Grasshoppers

e. Earthworms

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Question 15

 

 

It is NOT correct to say that arthropods have

Select one:

a. a solid ventral nerve cord.

b. an open circulatory system.

c. a well-developed nervous system.

d. jointed appendages and a segmented body.

e. a tough exoskeleton that grows by expansion.

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Question 16

The most likely ancestors of the chordates are considered to be echinoderms because 

Select one:

a. tunicates are echinoderms.

b. there is a direct lineage from sea stars to tunicates.

c. embryos of echinoderms and chordate embryos are deuterostomes.

d. adult echinoderms display similar characteristics as adult chordates.

e. the nervous system of echinoderms is similar to that of chordates.

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Question 17

 

Which of the following is NOT true about protostomes?

Select one:

a. They are types of advanced invertebrates.

b. They form a true coelom.

c. The first opening during embryonic development becomes the anus.

d. They will become mollusks, annelids, and arthropods.

e. They are more advanced than acoelomates, but not as advanced as deuterostomes.

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Question 18

 

 

Earthworms possess both male and female organs on separate segments; thus mating consists of "parallel parking" in opposite directions and cross-fertilizing. Given this, which of the following is/are true?

Select one:

a. This is evidence of a primitive state that is generally less efficient than separate sexes.

b. This is primarily to allow them to self-fertilize if no other worm is in their sector of the soil.

c. This is an advantage since they can mate with any other earthworm of the same species that they encounter.

d. Maintaining any system not clearly male or female is disadvantageous; the earthworm is trapped in an evolutionary dead end.

e. This demonstrates the how ineffective self-fertilization is as a means of reproduction.

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Question 19

 

 

Which statement is NOT true about echinoderms?

Select one:

a. The exoskeleton is made up of bony tissue.

b. Gas exchange occurs through gills on the skin.

c. Larvae are free-swimming and bilaterally symmetrical.

d. A water vascular system allows the tube feet to produce suction.

e. Symmetry is radial in the adult, usually with parts in fives or multiples of five.

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Question 20

 

If you live on a river delta or coastline, you may not be able to eat the local shellfish because of high levels of toxins, even though you may be able to drink the water taken from the same source. Why?

Select one:

a. Clams seasonally produce toxic substances.

b. Shellfish regularly consume poisonous red tide organisms.

c. Most harmless native clams have been replaced by bad species.

d. Clams filter-feed and concentrate the dilute pollutants from the water, thus acting as early warning indicators of severe pollution.

e. The toxins contained in the shellfish can't be broken down by your stomach, but toxins in the water can be.

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Question 21

 

An arachnid differs from a crustacean because

Select one:

a. arachnids have book gills.

b. arachnids are mostly aquatic and crustaceans are mostly terrestrial.

c. only arachnids shed their exoskeletons.

d. only arachnids have two major body segments of cephalothorax and abdomen.

e. arachnids have four pairs of walking legs.

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Question 22

 

Which of the following organisms exhibit complete metamorphosis?

Select one:

a. crayfish

b. starfish

c. grasshoppers

d. butterfly

e. lobsters

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Question 23

 

The life cycle of animals

Select one:

a. Demonstrates alternation of generation, where the zygote is haploid and the adult is diploid.

b. Does not demonstrate alternation of generation both the zygote and the adult are haploid.

c. Demonstrates alternation of generation where the zygote is diploid and the adult is haploid.

d. Does not demonstrate alternation of generation since only the spores are haploid.

e. Does not demonstrate alternation of generation; gametes are haploid and the organism is diploid.

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Question 24

 

Which of these is NOT a characteristic of sponges?

Select one:

a. sessile filter feeders

b. body wall has two cell layers

c. flagellated collar cells move water

d. water enters through a single cavity, the osculum

e. amoeboid cells transport food and make skeletal fibers and gametes

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Question 25

 

Larval Trichinella worms live in the

Select one:

a. liver.

b. lungs.

c. lymph glands.

d. skeletal muscle of pork.

e. water.

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