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Unit 7 7th grade science 2023

Total questions: 110

Worksheet time: 1hrs 10mins

Name
Class
Date
1.
a)
Poriferan
b)
Coelenterates
c)
Echinoderms
d)
Mollusks
2.
a)
Poriferan
b)
Arachnid
c)
Echinoderm
d)
Mollusk
3.
a)
Poriferan
b)
Arthropod
c)
Echinoderm
d)
Mollusk
4.
a)
Poriferan
b)
Mollusk
c)
Annelids
d)
Arthropods
5.
a)
Poriferan
b)
Mollusk
c)
Platyhelminthes
d)
Echinoderm
6.
a)
Poriferan
b)
Mollusk
c)
Annelid
d)
Coelenterates
7.
a)
Mollusk
b)
Echinoderm
c)
Annelid
d)
Crustacean
8.
a)
Annelid
b)
Arthropod
c)
Mollusk
d)
Nematode
9.
a)
Mollusk
b)
Poriferan
c)
Arthropod
d)
Platyhelminthes
10.
a)
Mollusk
b)
Poriferan
c)
Insect
d)
Annelid
11.
a)
Mollusk
b)
Arthropods
c)
Nematodes
d)
Coelentrates
12.
a)
Mollusk
b)
Annelids
c)
Arthropods
d)
Echinoderms
13.
a)
Annelids
b)
Mollusk
c)
Poriferans
d)
Coelentrates
14.

This animal belongs to which phyla?

a)

Poriferan

b)

Cnidarian

c)

Platyhelminth

d)

Nematode

15.

This animal belongs to which phyla?

a)

Poriferan

b)

Cnidarian

c)

Platyhelminth

d)

Nematode

16.

What animal phyla does this animal belong to?

a)

Cnidarian

b)

Poriferan

c)

Nematode

d)

Mollusk

17.

What animal phyla does this animal belong to?

a)

Platyhelminth

b)

Poriferan

c)

Cnidarian

d)

Mollusk

18.

What is the developmental difference between a Poriferan and Cnidarian?

a)

Poriferans do not develop true tissue layers, Cnidarian do

b)

Cnidarians do not have true tissues, Poriferans do

c)

Poriferans have a 3 cell layers, Cnidarians don't

d)

Cnidarians have a 3 cell layers, Poriferans don't

19.

What are some examples of a Cnidarian?

a)

Jellyfish, Coral, Sea Anemones, Hydras

b)

Sea Sponges

c)

Flatworms, Tapeworms, Blood Flukes

d)

Protozoans, Giardia, Amoebas

20.

Why are protozoans not classified as animals?

a)

protozoans are single-celled, not multicellular

b)

protozoans contain prokaryotic cells, not Eukaryotic cells

c)

protozoans contain cell walls

d)

protozoans are autotrophic, not heterotrophic

21.

What is a coelom?

a)

A hollow cavity that organs develop within

b)

The three cell layers that form during embryonic development

c)

The nervous system of the animal

d)

The digestive system of the animal

22.

What are some examples of a Poriferan?

a)

Jellyfish, Coral, Sea Anemones, Hydras

b)

Sea Sponges

c)

Flatworms, Tapeworms, Blood Flukes

d)

Protozoans, Giardia, Amoebas

23.

How many tissue layers do Cnidarians form during embryonic development?

a)

They are diploblastic, so they develop 2 tissue layers

b)

They are triploblastic, so they develop 3 tissue layers

c)

They only develop 1 tissue layer because they do not contain true tissues.

d)

Cnidarians are single-celled organisms

24.

Annelids is another name for

a)

worms

b)

a girl named Anne with eyelids

c)

jellyfish

d)

sponges

25.

Some worms can be parasitic, which means...

a)

uses photosynthesis

b)

hunts for food and then consumes it

c)

feeds off of a host to get

d)

only eats food from Paris

26.

Which type of worm is good for the soil because it decomposes and returns nutrients to the soil?

a)

segmented worms (earthworms)

b)

flat worms

c)

round worms

d)

parasitic worms

27.

Which type of symmetry do most worms have?

a)

radial

b)

bilateral

c)

no symmetry (asymmetrical)

28.

Most cnidarians are known to have nematocysts which are...

a)

homes for fish

b)

slime

c)

growths on the organism

d)

stinging cells

29.

Which of the following is not an example of a cnidarian?

a)

jellyfish

b)

anemone

c)

coral

d)

starfish

30.

Which invertebrate group has soft bodies and can sometimes have a shell?

a)

echinoderm

b)

mollusk

c)

cnidarian

d)

annelid

31.

spiny skinned invertebrates

a)

echinoderm

b)

mollusk

c)

cnidarian

d)

annelid

32.

invertebrate with stinging cells (nematocysts)

a)

echinoderm

b)

mollusk

c)

cnidarian

d)

annelids

33.

worms

a)

echinoderm

b)

mollusk

c)

cnidarian

d)

annelids

34.

filter feeds through pores

a)

sponges

b)

jellyfish

c)

starfish

d)

earthworms

35.

which of the following is NOT a mollusk??

a)

clam

b)

snail

c)

seastar

d)

squid

36.

Where do Echinoderms live?

a)

in salt water

b)

in fresh water

c)

in salt water nd fresh water

d)

on land

37.

What is the circulatory system in Echinoderms called?

a)

A complex system

b)

a water based vascular system

c)

a saline based system

d)

a blood based system

38.

How many legs does a Sea star have?

a)

2

b)

5

c)

7

d)

8

39.

What is the symmetry in modern echinoderms called?

a)

bilateral symmetry

b)

lateral symmetry

c)

5 part symmetry

d)

10 part symmetry

40.

What do all arthropods have?

a)

6 legs

b)

8 legs

c)

stiff legs

d)

jointed legs

41.

True or false. Every arthropod has an exoskeleton.

a)

true

b)

false

42.

For every human on earth there are about ____________ arthropods.

a)

20

b)

200

c)

300 million

d)

1 billion

43.

What is the exoskeleton composed of?

a)

Calcium

b)

Chitin

c)

Lead

d)

Magnesium

44.

True or false. All mollusks are cemented permanently to the ground

a)

true

b)

false

45.

What are the three body parts of a mollusk?

a)

the foot, mantle and toe

b)

the foot, mantle and radula

c)

the mantle, sleeve and toe

d)

the mantle, sleeve and toe

46.

What two systems do mollusks have?

a)

Digestive and respiratory systems

b)

respiratory and endocrine systems

c)

endocrine and circulatory systems

d)

digestive and circulatory systems

47.

What type of worm has a circulatory system?

a)

Flatworms

b)

Roundworms

c)

Nematodes

d)

Segmented worms

48.

What type of worm is a tapeworm?

a)

Flatworm

b)

Roundworm

c)

Segmented worm

d)

Annelid

49.

What type of worm is considered the simplest organism to have an entire digestive system

a)

Flatworms

b)

Roundworms

c)

Segmented Worms

d)

Annelids

50.

What is an example of a worm that would belong to the Phylum Annelida?

a)

Earthworms

b)

Roundworms

c)

Flatworms

d)

Silkworms

51.

What is the hard skeleton of coral composed of?

a)

calcium

b)

iron

c)

cartilage

d)

bones

52.

What makes cnidarians different from sponges?

a)

Cnidarians are multicellular

b)

Sponges are multicellular

c)

Sponges are not mobile

d)

Cnidarians have cells that are organized into tissues

53.

Describe the body form of a sponge.

a)

A sponge is open at the bottom and closed at the top.

b)

A sponge is closed at the bottom and open at the top.

54.

How much water can a sponge filter in one minute?

a)

1 quart

b)

2 quarts

c)

3 quarts

d)

4 quarts

55.

What does porifera mean?

a)

sponge

b)

having holes

c)

water flows through

d)

dead animal

56.
This group has feathers/
a)
fish
b)
reptile
c)
bird
d)
mammal
57.
This group feeds milk to its young.
a)
birds
b)
mammals
c)
fish
d)
reptile
58.
Many animals in this group go through metamorphosis (bodies change as they get older).
a)
fish
b)
reptile
c)
amphibian
d)
mamma;
59.
All invertebrates _________
a)
Have a backbone
b)
Do not have a backbone
c)
Are really just Vertebrates
d)
Have a nerve cord
60.
T/F Worms have bilateral symmetry.
a)
True 
b)
False
61.

Dragonflies, stink bugs, and lady bugs are __________.

a)

crustaceans

b)

arthropods

c)

annelids

d)

echinoderms

62.
I have a soft-body, a hard shell, and live on land and water.  What am I?
a)
Mollusk
b)
Arthropod
c)
Echinoderm
d)
Cnidarian
63.
Which of the following is an example of a crustacean?
a)
squid
b)
crab
c)
earth worm
d)
bumble bee
64.
The organism shown is an example of a(n)
a)
mollusk
b)
cnidarian
c)
sponge
d)
echinoderm
65.
Is the picture a vertebrate or invertebrate?
a)
Vertebrate
b)
Invertebrate
66.
The organism in the picture is a(n)
a)
echinoderm
b)
mollusk
c)
arthropod
d)
cnidarian
67.
The picture shows an example of a(n)
a)
echinoderm
b)
cnidarian
c)
mollusk
d)
annelid
68.
Arthropods have an outer covering called a(n)_________
a)
endoskeleton
b)
bones
c)
exoskeleton
d)
armor
69.
All arthropods have segmented bodies, jointed appendages, and ________________. 
a)
tails
b)
lungs
c)
wings
d)
an exoskelton
70.
What am I?
a)
Arthropod
b)
Cnidarian
c)
Mollusk
d)
Porifera
71.
I have a long thin body and pairs of legs on each section of my body.  I am a centipede.
a)
Arthropod
b)
Annelid
c)
Echinoderm
d)
Cnidarian
72.

cold blooded vertebrate animals with dry, scaley skin

a)

amphibians

b)

reptiles

c)

birds

d)

fish

73.
hairy warm blooded animals that feed their babies milk
a)
mammals
b)
marsupials
c)
monotremes
d)
macropods
74.

Which of the following are sometimes seen on the sidewalk after it rains?

a)

flatworms

b)

roundworms

c)

earthworms

d)

tapeworms

75.

What is another name for annelid worms?

a)

roundworms

b)

segmented worms

c)

closed worms

d)

flatworms

76.

Which kind of annelid worm is most common?

a)

earthworm

b)

leech

c)

marine worm

d)

flatworm

77.

Which mollusk use tentacles to grab food?

a)

snails and slugs

b)

octopuses and squids

c)

clams and oysters

78.

A hard outer layer called a ______________________ protects some mollusks from predators.

a)

Mantle

b)

shell

c)

foot

d)

visceral mass

79.

Mollusks are _________________invertebrates

a)

soft bodied

b)

hard bodied

c)

ridged

d)

None of these

80.

Mollusks have

a)

Radial symmetry

b)

Bilateral symmetry

c)

No symmetry

d)

None of these

81.

One of these is NOT an example of a Mollusk

a)

Snail

b)

Squid

c)

Octopus

d)

Jellyfish

82.

One of these is NOT grouped as a type of Mollusk

a)

Gastropods

b)

Bivalves

c)

Cephalopods

d)

Sea anemone

83.

Which is the only phylum of worm to have any kind of circulatory system?

a)

Platyhelminthes

b)

Nematoda

c)

Annelida

84.

Mollusks have

a)

bilateral symmetry

b)

radial symmetry

c)

no symmetry

85.

What is this a picture of

a)

A snail

b)

A Beetle

c)

A crab

d)

A squid

e)

A seaanemone

86.

Which one is a no shell mollusk?

a)

Curd

b)

Slug

c)

Oyster

d)

Mussel

87.
The three main phlya of worms include
a)
roundworms, tube worms, and flat worms
b)
roundworms, flatworms, and segmented worms
c)
flatworms, segmented worms, and marine worms
88.
Which of the following is an example of a segmented worm?
a)
Tapeworm
b)
Nematode
c)
Leech
d)
Planarian
89.
What type of symmetry do annelids have?
a)
none
b)
radial
c)
bilateral
90.

Invertebrates are animals that

a)

with a backbone

b)

without a backbone

91.

An exoskeleton is a skeleton

a)

that is on the outside of a body

b)

that is on the inside of a body.

92.

An endoskeleton is a skeleton

a)

that is on the outside of a body

b)

that is on the inside of a body.

93.
I have a soft-body, a hard shell, and live on land and water.  What am I?
a)
Mollusk
b)
Arthropod
c)
Echinoderm
d)
Cnidarian
94.

A butterfly is a type of vertebrate.

a)

True

b)

False

95.
I am an arachnid, have four pairs of legs, and a body with two sections.
a)
Echinoderm
b)
Arthropod
c)
Annelid
d)
Porifera
96.
I have a round body divided into segments and my digestive tract has two openings.
a)
Echinoderm
b)
Cnidarian
c)
Annelid
d)
Mollusk
97.
I have spiny skin, water vascular system with tube feet, and a radial symmetry.  I am a sea anemone.
a)
Arthropod
b)
Cnidarian
c)
Echinoderm
d)
Mollusk
98.

I have a hard exoskeleton, a segmented body, pairs of jointed appendages, and live on land and water. I am a crab. What group do I belong to?

a)

Mollusk

b)

Arthropod

c)

Echinoderm

d)

Cnidarian

99.
I am spiny and have a water vascular system with tube feet.  I am a sea cucumber.
a)
Cnidarian
b)
Echinoderm
c)
Mollusk
d)
Annelid
100.

I have stinging tentacles to catch prey. I have radial symmetry. I am a jellyfish.

a)

Echinoderm

b)

Cnidarian

c)

Arthropod

d)

Mollusk

101.

Click the groups of invertebrates. There is more than one answer.

a)

Cnidarians

b)

Mammals

c)

Reptiles

d)

Arthropods

e)

Mollusks

102.

Click the groups of invertebrates. There is more than one answer.

a)

Sponges

b)

Echinoderms

c)

Birds

d)

Annelids

e)

Fish

103.

What type of symmetry do sponges have?

a)

bilateral symmetry

b)

radial symmetry

c)

asymmetrical

104.

What type of symmetry do cnidarians have?

a)

bilateral symmetry

b)

radial symmetry

c)

asymmetrical

105.

What type of symmetry do arthropods have?

a)

bilateral symmetry

b)

radial symmetry

c)

asymmetrical

106.

Which animals are mollusks?

a)

starfish, mammals, sea urchins

b)

snails, octopus and squid

c)

jellyfish, coral and reptiles

107.

Which animals are arthropods?

a)

jellyfish, coral and sponges

b)

starfish, sea cucumbers, sea urchins

c)

snails, octopus and fish

d)

lobster, butterflies, spiders, grasshopper

108.

Earthworms belong to the Annelid group.

a)

True

b)

False

109.

Snails belong to the Arthropod group.

a)

True

b)

False

110.

The largest group of invertebrates is ____________.

a)

mollusks

b)

annelids

c)

arthropods

d)

cnidarians

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