Question 1

Which of the following is not an arthropod?

Accepted Answer

A)  Cephalopods
B)  Copepod
C)  Krill
D)  Barnacle
E)  Blue crab

Question 2

The most distinctive feature of ribbon worms is:

Accepted Answer

A)  Long proboscis.
B)  Segmented body.
C)  Absence of a digestive tract.
D)  Long bands of cilia used in locomotion.
E)  Radial symmetry.

Question 3

A polychaete worm is:

Accepted Answer

A)  A Platyhelminthes.
B)  A Nematode.
C)  A Cnidarian.
D)  An Annelid.
E)  A Fluke.

Question 4

Polychaete worms show:

Accepted Answer

A)  A body covered with a mantle.
B)  Segmentation.
C)  Radial symmetry.
D)  Incomplete digestive tract.
E)  U-shaped gut.

Question 5

Which of the following is not correctly paired?

Accepted Answer

A)  Phylum Ctenophora-comb jellies
B)  Phylum Nematoda-round worms
C)  Phylum Nemertea-ribbon worms
D)  Phylum Platyhelminthes-beard worms
E)  Phylum Porifera-sponges

Question 6

Comb jellies are:

Accepted Answer

A)  Bilaterally symmetrical.
B)  Similar to a cnidarian polyp.
C)  Distinguished by eight bands of cilia.
D)  Colonial animals.
E)  Carnivores that use nematocysts to capture prey.

Question 7

One distinctive feature of arthropods:

Accepted Answer

A)  Lack of a digestive system.
B)  Jointed legs.
C)  Gills in a mantle cavity.
D)  Proboscis used to capture prey.
E)  Lack of a brain. B

Question 8

One of the following is not a crustacean:

Accepted Answer

A)  Horseshoe crab.
B)  Copepods.
C)  Barnacles.
D)  Shrimps.
E)  Beach hoppers.

Question 9

A nudibranch is a type of:

Accepted Answer

A)  Platyhelminthes.
B)  Nematode.
C)  Annelid.
D)  Cnidarian.
E)  Mollusc.

Question 10

One group of parasites of fishes,seabirds,and other marine animals is:

Accepted Answer

A)  Flukes.
B)  Turbellarians.
C)  Comb jellies.
D)  Ribbon worms.
E)  Segmented worms.

Question 11

Sponges and all filter feeders use the following as a food source:

Accepted Answer

A)  Invertebrates only.
B)  All particulate matter suspended in water.
C)  Particulate matter that deposits on the bottom only.
D)  Dead vertebrates.
E)  Vegetable matter only in the water.

Question 12

Arrow worms feed on:

Accepted Answer

A)  Organic matter that deposits on the bottom.
B)  Plant matter.
C)  Nutrients dissolved in the water.
D)  Live prey.
E)  Organic matter filtered from the water.

Question 13

All molluscs:

Accepted Answer

A)  Have a soft body often covered by a shell made of silica
B)  Have a soft body covered by a mantle.
C)  Have an externally segmented body.
D)  Lack a larval stage.
E)  Lack a circulatory system.

Question 14

One distinctive feature of all echinoderms:

Accepted Answer

A)  Jointed legs.
B)  Gill slits.
C)  Endoskeleton.
D)  Water vascular system.
E)  Bilateral symmetry.

Question 15

Which of the following type of cells and structures of sponges does not match the function?

Accepted Answer

A)  Collar cells - calcareous structures for support
B)  Osculum - opening through which water leaves
C)  Pore cells - opening through which water enters
D)  Spongin - fibers for support
E)  Gametes - reproduction

Question 16

Beard worms are unique because they lack:

Accepted Answer

A)  Symmetry.
B)  A skin.
C)  A digestive tract.
D)  Cells or tissues.
E)  A reproductive system.

Question 17

All cnidarians share all of these features except one:

Accepted Answer

A)  Nematocysts.
B)  Multicellular.
C)  Radial symmetry.
D)  Complete digestive tract with mouth and anus.
E)  Marine and fresh-water.

Question 18

The larval stage of an animal is best defined as:

Accepted Answer

A)  Immature stage that is able to reproduce.
B)  Early colony of cells of fresh-water sponges.
C)  Early stage of development of an organism,typically part of the plankton.
D)  Sperm cell that lives free in the water.
E)  Egg that has been fertilized by more that one sperm. C

Question 19

Free-floating cnidarians like jellyfish are referred to as having a ___________ type form.

Accepted Answer

A)  Polyp
B)  Benthic
C)  Bilateral
D)  Medusa
E)  Asexual D

Question 20

Which of the following are not correctly paired?

Accepted Answer

A)  Class Asteroidea-sea stars
B)  Class Holothuroidea-sea cucumbers
C)  Class Ophiuroidea-brittle stars
D)  Class Echinoidea-feather stars

Exam 7: Marine Animals Without a Backbone

Which of the following is not an arthropod?

Correct AnswerverifiedShow Answer

The most distinctive feature of ribbon worms is:

Correct AnswerverifiedShow Answer

A polychaete worm is:

Correct AnswerverifiedShow Answer

Polychaete worms show:

Correct AnswerverifiedShow Answer

Which of the following is not correctly paired?

Correct AnswerverifiedShow Answer

Comb jellies are:

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One distinctive feature of arthropods:

Correct AnswerverifiedB

One of the following is not a crustacean:

Correct AnswerverifiedShow Answer

A nudibranch is a type of:

Correct AnswerverifiedShow Answer

One group of parasites of fishes,seabirds,and other marine animals is:

Correct AnswerverifiedShow Answer

Sponges and all filter feeders use the following as a food source:

Correct AnswerverifiedShow Answer

Arrow worms feed on:

Correct AnswerverifiedShow Answer

All molluscs:

Correct AnswerverifiedShow Answer

One distinctive feature of all echinoderms:

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Which of the following type of cells and structures of sponges does not match the function?

Correct AnswerverifiedShow Answer

Beard worms are unique because they lack:

Correct AnswerverifiedShow Answer

All cnidarians share all of these features except one:

Correct AnswerverifiedShow Answer

The larval stage of an animal is best defined as:

Correct AnswerverifiedC

Free-floating cnidarians like jellyfish are referred to as having a ___________ type form.

Correct AnswerverifiedD

Which of the following are not correctly paired?

Correct AnswerverifiedShow Answer

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B

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C

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D

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