Deck 7: Marine Animals Without a Backbone

Question 1

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

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.

Answer 1

B

Question 2

Most cnidarians are specialized as:

A)Filter feeders.
B)Parasites.
C)Carnivores.
D)Plant-feeders.
E)Feeders of organic matter on the bottom.

Answer 2

C

Question 3

In a bilaterally symmetrical animal,which of the following is not correctly paired?

A)Dorsal surface -upper surface
B)Anterior surface -head
C)Posterior surface -rear end
D)Ventral surface -brain

Answer 3

D

Question 4

Flatworms are characterized by having:

A)Radial symmetry.
B)A central nervous system.
C)Tentacles used for filter feeding.
D)Nematocysts.
E)A complete digestive tract.

Question 5

A polychaete worm is:

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

Question 6

All cnidarians share all of these features except one:

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

Question 7

The development of bilateral symmetry in invertebrates has particularly influenced the evolution of a more complex:

A)Digestive system.
B)Reproductive system.
C)Skeleton.
D)Mouth.
E)Nervous system.

Question 8

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

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

Question 9

All sponges share only one of these features:

A)They are all marine.
B)They reproduce by asexual reproduction only.
C)They have specialized circulatory organs.
D)They have neumatocysts.
E)They are multicellular.

Question 10

An example of an anthozoan is:

A)Portuguese-Man-of War.
B)Colonial hydroid.
C)Sea nettle jellyfish.
D)Sea wasp.
E)Reef coral.

Question 11

Comb jellies are:

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 12

The larval stage of an animal is best defined as:

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.

Question 13

Which of the following is not correctly paired?

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 14

Deposit-feeding animals feed on:

A)Blood and living tissues.
B)Particulate matter in the water.
C)Plankton from the water that passively enters the digestive system.
D)Live prey.
E)Organic matter that settles on the bottom.

Question 15

The most distinctive feature of ribbon worms is:

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

Question 16

Animals,all members of the kingdom Animalia,are characterized by all of the following except one:

A)They can be eukaryotic and mutlicellular.
B)Most are multicellular.
C)Some are autotrophs.
D)Some lack a backbone.
E)Some are eukaryotic and unicellular.

Question 17

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

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

Question 18

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

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 19

Comb jellies are classified as:

A)Cnidarians.
B)Ctenophores.
C)Platyhelminthes.
D)Sipunculans.

Question 20

Polychaete worms show:

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

Question 21

One distinctive feature of all echinoderms:

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

Question 22

Which of these organisms is most highly evolved?

A)A Tunicate
B)A Lancelet
C)A sea urchin
D)A crinoid

Question 23

Beard worms are unique because they lack:

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

Question 24

A zoea would be a larval form of which of these organisms?

A)Mussel
B)Octopus
C)Barnacle
D)Crab

Question 25

Which of the following are not correctly paired?

A)Class Gastropoda-mussels.
B)Class Bivalvia-oysters.
C)Class Polyplacophora-chitons.
D)Class Cephalopoda-octopus.

Question 26

The term for changing exoskeletons by crustaceans is:

A)undulate.
B)molt.
C)Byssal secretion.
D)Asexual mitosis.

Question 27

Arrow worms feed on:

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 28

The radula and crystalline style of molluscs are part of their:

A)Reproductive system.
B)Defensive mechanisms.
C)Excretory system.
D)Nervous system.
E)Digestive system.

Question 29

Which of the following are not correctly paired?

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

Question 30

One of the following is not a crustacean:

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

Question 31

One distinctive feature of arthropods:

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.

Question 32

Which of the following is not an arthropod?

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

Question 33

All molluscs:

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 34

Which of the following organisms has a siphon?

A)Cnidarians
B)Ctenophores
C)Nudibranchs
D)Cephalopods

Question 35

A nudibranch is a type of:

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