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Arthropods and Echinoderms Flashcards | StudBud
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Arthropods and Echinoderms
Arthropods and Echinoderms
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1
The mouth of a _____________ faces up, unlike other echinoderms.
sea star
sea urchin
crinoid
sand dollar
2
The group of hermaphroditic crustaceans are the
stomatopods.
amphipods.
decapods.
barnacles.
3
____________ have 2 pair of antennae, swimmerets, and chelipeds.
amphipods
barnacles
decapods
stomatopods
4
Some echinoderms can actively swim. Which ones?
feather stars
sea cucumbers
brittle stars
sea stars
5
What is false about sea stars?
tube feet are on the oral surface
they have external fertilization
they evert their stomach to ingest prey
they can't reproduce asexually
6
Which of the following is not a characteristic of an arthropod?
compound eyes
exoskeleton
water vascular system
jointed appendages
7
Water enters sea stars through the
mouth.
spines.
madreporite.
tube feet.
8
Arthropods having two pairs of antennae belong to subphylum
Insecta.
Chelicerata.
Pycnogonidia
Crustacea.
9
Herbivorous echinoderms with a feedind device called Aristotle's lantern are called
sea stars.
sand dollar.
sea urchins.
sea cucumbers.
10
What is false about the chelicerates (horseshoe crabs & sea spiders)?
lack mouthparts
they have 3 body parts.
they have mandibles
they lack antennae
11
What arthropod group has the most complex eyes in the animal kingdom?
decapods
horseshoe crabs
stomatopods
amphipods
12
________________ have feeding devices called gnathopods.
isopods
amphipods
stomatopods
decapods
13
Which of the following is not a decapod?
crab
crayfish
shrimp
krill
14
The largest group of crustaceans are the
copepods.
uropods.
decapods.
amphipods.
15
Echinoderms that have a defense device of releasing their internal organs are called
sea cucumbers.
sea urchins.
brittle stars.
sea lilies.
16
A ____________ is a crustacean with "the fastest punch in the world".
crayfish
amphipod
mantis shrimp
lobster
17
Which inveretbrate group does the male carry the eggs?
mantis shrimp
barnacles
sea spiders
decapods
18
The exoskeleton of arthropods is mainly composed of
carbonate.
chitin.
silica.
calcium.
19
A hermit crab makes it home out of an abandoned _______________ shell.
schaphopod
bivalve
chephalopod
gastropod
20
Many female decapods brood their eggs in appendages called
maxillipeds.
walking legs.
swimmerets.
gnathopods.
