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Level 1 Quiz
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1

At least 97% of all species of animals are invertebrates.
A)True
B)False
2

Most sponges are carnivores that suck prey in through specialized pores.
A)True
B)False
3

Feeding currents in sponges are produced by flagellated cells called choanocytes.
A)True
B)False
4

Food is trapped in most sponges by mineralized structures called spicules.
A)True
B)False
5

Support material in sponges is always made of calcium carbonate.
A)True
B)False
6

Cnidarians capture prey mainly by entangling and wrapping them with their tentacles.
A)True
B)False
7

Radial symmetry, such as seen in Cnidaria, occurs when similar parts of a body are arranged and repeated around a central axis.
A)True
B)False
8

Mature marine hydrozoan Cnidaria are mainly colonies of polyps that produce medusae.
A)True
B)False
9

The Portugese man-of-war is a type of scyphozoan cnidarian with a gas float.
A)True
B)False
10

Scyphozoan cnidarians may be found in a polyp form, but the medusa stage generally dominates.
A)True
B)False
11

In anthozoan cnidarians, the polyp form has complex internal septa to aid digestion.
A)True
B)False
12

Corals and gorgonians are types of anthozoan cnidarians.
A)True
B)False
13

Ctenophores are similar to scyphozoan cnidarians in that they both have which feature?
A)gelatinous body
B)sting their prey
C)rows of long cilia
D)skeleton of calcium carbonate
14

In bilaterally symmetric animals, the term "bilateral" indicates that there are two ways of cutting the body to get two identical halves.
A)True
B)False
15

Platyhelminths have a centralized brain, while cnidarians do not.
A)True
B)False
16

Platyhelminths have a complete digestive tract with mouth and anus, while cnidarians do not.
A)True
B)False
17

Unlike other flatworms, tapeworms have which feature?
A)a long proboscis
B)no digestive tract
C)bright colors
D)a gut with septa
18

Nemertean worms entangle prey with a proboscis everted from a cavity above the mouth.
A)True
B)False
19

Marine nematode worms are hardly ever seen because they are relatively few in number.
A)True
B)False
20

Annelid worms have a true coelom for a body cavity, but nematode, nemertean, and platyhelminth worms do not.
A)True
B)False
21

Segments of polychaete worms usually have fleshy extensions called parapodia that often have stiff bristles called setae.
A)True
B)False
22

Polychaete worms, like earthworms on land, are all deposit feeders.
A)True
B)False
23

All known animal phyla were discovered by biologists by the early 20th century.
A)True
B)False
24

Pogonophoran worms differ from most other worms in that their digestive tracts are filled with bacteria.
A)True
B)False
25

Most molluscs have a radula, a ribbon-like structure that carries rows of small teeth.
A)True
B)False
26

All molluscs have an external shell made of calcium carbonate.
A)True
B)False
27

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.
A)True
B)False
28

Brachiopods feed by which means?
A)scraping algae from rocks
B)catching prey
C)filter feeding
D)deposit feeding
29

Most bivalves use their radular teeth like a filter to trap small particles in the water.
A)True
B)False
30

Cephalopods use a structure called a funnel to squirt out water from their mantle cavities in order to create a kind of jet propulsion.
A)True
B)False
31

Squids and cuttlefish have internal shells.
A)True
B)False
32

Most chitons (Polyplacophora) use their radulas to scrape algae off shoreline rocks.
A)True
B)False
33

Molluscs and annelids produce similar planktonic larvae called trochophores.
A)True
B)False
34

Cephalopods are considered to have the most complex brain outside of the vertebrates, capable of advanced learning.
A)True
B)False
35

Arthropods must discard (molt) their chitinous exoskeletons in order to grow.
A)True
B)False
36

Maxillipeds serve in what process?
A)mating
B)feeding
C)locomotion
D)sensing currents
37

Copepod crustaceans typically use their antennae to swim in the plankton.
A)True
B)False
38

Barnacles use their antennae to filter particles out of the water.
A)True
B)False
39

Decapods generally have 5 pairs of swimming legs on the cephalothorax.
A)True
B)False
40

Hermit crabs have a long, soft abdomen, while true crabs have a small abdomen tucked under the cephalothorax.
A)True
B)False
41

Most asteroidean echinoderms are carnivores, while most ophiuroideans eat particulate matter and small organisms off the bottom.
A)True
B)False
42

Sea urchins (echinoidean Echinodermata) feed with an elaborate jaw and muscle device called Aristotle's lantern.
A)True
B)False
43

Sea cucumbers (holothuroidean Echinodermata) are carnivores, using modified tentacular tube feet to grasp animal prey.
A)True
B)False
44

Echinoderms have a separate brain for each portion of the radial body.
A)True
B)False
45

Echinoderms, hemichordates and chordates (which include humans) are all thought to be closely related because of common features in early embryonic development.
A)True
B)False
46

Sea squirts lose their notochord as adults.
A)True
B)False
47

Benthic sea squirts (ascidiacean Urochordata) and planktonic salps (thaliacean Urochordata) both filter-feed with an incurrent and excurrent siphon.
A)True
B)False
48

A lancelet, like other chordates, has which feature?
A)a pair of large eyes
B)a water-vascular system
C)a large proboscis
D)a dorsal nerve cord
49

The following animals are largely carnivores:
A)Chaetognatha
B)Bryozoa
C)Brachiopoda
D)Sipunculida
50

Echinoderms are characterized by
A)usually having a heptaradial symmetry.
B)having an exoskeleton similar to that of the Arthropoda.
C)often moving by use of hundreds of fluid-powered tube feet.
D)all of the above.
E)both b and c.
51

Some of the most common and widespread marine animals are
A)insects.
B)copepods.
C)loriciferans.
D)brachiopods







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