MARINE BIO INVERTEBRATES Review QUIZ (HUBER ch7)

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1
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At least 97% of all species of animals are invertebrates.

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A)external image spacer.gif
True

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B)external image spacer.gif
False


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2
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Sponges do not have which feature?

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A)external image spacer.gif
Specialized cells

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B)external image spacer.gif
Gametes

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C)external image spacer.gif
Supporting structures

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D)external image spacer.gif
Organs


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3
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Feeding currents in sponges are produced by flagellated cells called choanocytes.

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A)external image spacer.gif
True

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B)external image spacer.gif
False


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4
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Water enters a sponge through which part?

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A)external image spacer.gif
Osculum

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B)external image spacer.gif
Ostium

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Coelom

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D)external image spacer.gif
Pinacocytes


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5
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Radial symmetry, such as seen in Cnidaria, occurs when similar parts of a body are arranged and repeated around a central axis.

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True

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B)external image spacer.gif
False


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6
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In all animals with radial symmetry,

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There is no head.

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The body plan is in five parts.

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There is no oral surface.

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There is an anterior end.


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7
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Mature marine hydrozoan Cnidaria are mainly colonies of polyps that produce medusae.

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A)external image spacer.gif
True

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B)external image spacer.gif
False


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8
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The gelatinous bell of a medusa is composed of which of these?

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A)external image spacer.gif
Cnidocytes

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B)external image spacer.gif
Mesoglea

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Spicules

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Gastrodermis


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9
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Scyphozoan cnidarians may be found in a polyp form, but the medusa stage generally dominates.

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A)external image spacer.gif
True

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B)external image spacer.gif
False


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10
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11
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12
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In bilaterally symmetric animals, the term "bilateral" indicates that there are two ways of cutting the body to get two identical halves.

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True

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B)external image spacer.gif
False


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13
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Marine worms may gain support for the body from which of these means?

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An exoskeleton

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B)external image spacer.gif
A protein skeleton

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A hydrostatic skeleton

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An endoskeleton


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14
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15
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Unlike other flatworms, tapeworms have which feature?

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A)external image spacer.gif
A long proboscis

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No digestive tract

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Bright colors

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A gut with septa


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16
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17
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18
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19
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20
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21
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22
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23
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Most molluscs have a radula, a ribbon-like structure that carries rows of small teeth.

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A)external image spacer.gif
True

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B)external image spacer.gif
False


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24
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Among mollusks, there is no radula among the

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A)external image spacer.gif
Gastropods.

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Bivalves.

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C)external image spacer.gif
Cephalopods.

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D)external image spacer.gif
Chitons.


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25
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All molluscs have an external shell made of calcium carbonate.

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A)external image spacer.gif
True

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B)external image spacer.gif
False


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26
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Some gastropods use their radulas to scrape algae from rocks, and some are carnivores that may use the radula to rasp a hole in a prey's shell.

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A)external image spacer.gif
True

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B)external image spacer.gif
False


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27
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In a bivalve, the gills serve in

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Gas exchange only.

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B)external image spacer.gif
Gas exchange and feeding.

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Gas exchange and shell production.

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Gas exchange and production of noxious chemicals.


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28
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29
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Cephalopods use a structure called a funnel to squirt out water from their mantle cavities in order to create a kind of jet propulsion.

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True

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B)external image spacer.gif
False


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30
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Cephalopods are considered to have the most complex brain outside of the vertebrates, capable of advanced learning.

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A)external image spacer.gif
True

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B)external image spacer.gif
False


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31
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A closed circulatory system always has which of these features?

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Blood within distinct vessels

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A heart with chambers

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Open blood spaces

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The ability to take up nutrients from seawater


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32
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33
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Arthropods must discard (molt) their chitinous exoskeletons in order to grow.

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A)external image spacer.gif
True

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B)external image spacer.gif
False


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34
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35
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36
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37
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38
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39
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40
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41
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42
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Echinoderms are characterized by

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Usually having a heptaradial symmetry.

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Having an exoskeleton similar to that of the Arthropoda.

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Often moving by use of hundreds of fluid-powered tube feet.

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All of the above.

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Both b and c.


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43
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In a starfish, an external part of the water-vascular system is

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The ring canal.

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B)external image spacer.gif
Aristotle's lantern.

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An ampulla.

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A tube foot.


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44
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Echinoderms, hemichordates and chordates (which include humans) are all thought to be closely related because of common features in early embryonic development.

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True

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B)external image spacer.gif
False


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45
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46
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Sea urchins are carnivores, using modified tentacular tube feet to grasp animal prey.

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True

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B)external image spacer.gif
False


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47
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The mouth is directed downward in the

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A)external image spacer.gif
Asteroidea.

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B)external image spacer.gif
Crinoidea.

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Holothuroidea.

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D)external image spacer.gif
star fish.


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48
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49
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50
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ANSWERS:
1. A
2. D
3. a
4.b
5.a
6.a
7.a
8.b
9.a
10.a
11.a
12.b
13.c
14.a
15.b
16.a
17.b
18.a
19.d
20.a
21.b
22.a
23.a
24.b
25.b
26.a
27.b
28.d
29.a
30.a
31.a
32.a
33.a
34.c
35.a
36.b
37.a
38.c
39.d
40.a
41.c
42.c
43.d
44.a
45.c
46.b
47. b
48.a
49.d
50.b



Dissections:
1. Siphon
2.3
3.