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Worms, Mollusks, and Arthropods

Total questions: 45

Worksheet time: 11hrs 15mins

Name
Class
Date
1.
Soft bodied invertebrate with a thick muscular foot for movement: some have shells
a)
molluks
b)
arthropod
c)
segmented worm
d)
sponge
2.
What group has a long tube-like body with many sections and breathes through its skin?
a)
Segmented Worms
b)
Arthropods
c)
Echinoderms
d)
Sponges 
3.
Slugs and Snails
a)
Segmented Worms
b)
Mollusks
c)
Arthropods
d)
Sponges
4.
insects, and arachnids (spiders and ticks)
a)
Sponges
b)
Arthropods
c)
Segmented Workd
d)
Mollusks
5.
clams, squids, and octopuses
a)
Sponges
b)
Echnioderms
c)
Mollusks
d)
Segmented Worms
6.

Simple worms have body plan with_____.

a)

asymmetrical form

b)

bilateral symmetry

c)

radial symmetry

d)

spherical symmetry

7.

A system where blood is not in vessels, but spreads over the organs in some areas is called a(n)______ system.

a)

closed circulatory system

b)

fluid-filled

c)

open circulatory

d)

water vascular

8.

Gastropods have a ______, a tongue-like organ that works like a file.

a)

crop

b)

radula

c)

setae

d)

spiracle

9.

The class of mollusks with the most specialized members are the ______.

a)

bivalves

b)

cephalopods

c)

pseudopods

d)

gastropods

10.

Segmented worms have bristle-like structures called ______ to help them move.

a)

gills

b)

radula

c)

setae

d)

tube feet

11.

Like mollusks, segmented worms have a ______.

a)

body cavity for organs

b)

crop

c)

mantle

d)

muscular foot

12.

The blood of earthworms is contained in vessels, thus they have a(n) ______.

a)

closed circulatory system

b)

fluid-filled system

c)

open circulatory system

d)

water vascular system

13.

______ are NOT examples of appendages.

a)

Antennae

b)

Arms

c)

Claws

d)

Intestines

14.

All arthropods DO NOT have ______.

a)

a body cavity

b)

a mouth and anus

c)

a nervous system

d)

three body segments

15.

A(n) ______ resembling a spinning top with cilia in the middle is the best evidence that mollusks and segmented worms share a common ancestor.

a)

appendage

b)

gill

c)

larva

d)

spiracle

16.

______ make up the largest group of complex invertebrates.

a)

Arachnids

b)

Crustaceans

c)

Insects

d)

Worms

17.

Unlike other arthropods, arachnids have ______ legs.

a)

4

b)

6

c)

8

d)

10

18.

Arthropods have ____________ symmetry.

a)

radial

b)

none

c)

jointed

d)

bilateral

19.

This term means arthropods lose their exoskeleton to grow larger

a)

molt

b)

melt

c)

break

d)

slide

20.

Which of the following correctly describes a crayfish's body regions?

a)

head, thorax, abdomen

b)

head, abdomen

c)

cephalothorax, abdomen

d)

head, cephalothorax

21.

Which of the following are considered to be "true jaws" that chew food?

a)

Mandibles

b)

Maxillae

c)

Maxillipeds

22.

Which of the following crayfish structures is used for gas exchange?

a)

Malpighian tubules

b)

Green glands

c)

Gills

d)

Book lungs

23.
What does the name Arthropod mean?
a)
"Suit of Armor"
b)
"Hard Cover"
c)
"Jointed Foot"
d)
"Tough Foot"
24.
In your backyard, you find an almost clear, crunchy shape attached to a tree. It looks like a bug of some kind, but it is just the hollow exterior. You decide that this must have come from an insect that just shed its exoskeleton during __________________. 
a)
Reproduction
b)
Molting
c)
Digestion
d)
Regeneration
25.
The malpighian tubules are organs associated with which system?
a)
skeletal
b)
Digestive
c)
Reproductive
d)
Excretory
26.
Why do arthropods have to shed their exoskeletons?
a)
it wears out
b)
they don't shed
c)
it limits the size they can grow
d)
to go from water to land environments
27.
Which of the following is NOT a benefit of insects?
a)
biological control
b)
disease carriers
c)
pollinators
d)
source of food
28.
What is one way insects are harmful?
a)
They spread diseases.
b)
They eat other insects.
c)
They make honey, beeswax, and silk.
d)
They are food for other animals. 
29.
tapeworms live the host's _____
a)
intestines 
b)
stomach
c)
mouth
30.
Earthworm
a)
Phylum Platyhelminthes
b)
Phylum Nematoda
c)
Phylum Annelida
31.
Flat body
a)
Phylum Platyhelminthes
b)
Phylum Nematoda
c)
Phylum Annelida
32.
Which of the following is a structure related to excretion?
a)
Ganglia
b)
Gizzard
c)
Nephridia
d)
Crop
33.
Which phylum of worms is the first to exhibit segmentation?
a)
Platyhelmintes
b)
Nematoda
c)
Annelida
34.

How does a host become infected with Trichinella?

a)

eating under cooked seafood

b)

eating under cooked pork

c)

drinking contaminated drinking water

d)

eating under cooked chicken

35.

The knob-shaped head of tapeworms that contains hook/suckers to attach to host.

a)

proglottid

b)

mastax

c)

scolex

d)

choanocytes

36.

What is a group of cells that can detect light called?

a)

eye spots

b)

sun dial

c)

ocular cells

d)

pigmental segment

37.

Body sections that form behind the scolex that contain male and female reproductive structures.

a)

mastax

b)

flame cells

c)

diffusion

d)

proglottid

38.

What are the three main groups of Mollusks?

a)

Gastropods

b)

Cephalopods

c)

Annelids

d)

Myriapods

e)

Bivalves

39.

Mollusks have

a)

bilateral symmetry

b)

radial symmetry

c)

no symmetry

40.

When all else fails, some mollusks use this to confuse their prey and escape

a)

siphon

b)

ink sac

c)

pen

d)

chitin

41.
How do Gastropods obtain nutrients?
a)
Herbivore
b)
Carnivore
c)
Scavenger
d)
All
42.
What is the meaning of Gastropod?
a)
Soft-bodied
b)
Stomach foot
c)
Head-footed
d)
Two-shelled
43.
How do Bivalves eat?
a)
Filter feeders
b)
Radula
c)
Tentacles
44.

How do you idenify a Mollusk.

a)

There pattern on a shell

b)

Presence of a shell

c)

The Type of shell

d)

Type of foot

e)

If there on land or water

45.

Which part of the Mollusk body is specialized for burrowing, feeding, and movement?

a)

shell

b)

visceral mass

c)

mantle

d)

foot

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