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Worksheets

Zoology only

Total questions: 20

Worksheet time: 33mins

Name
Class
Date
1.
The hard outer coating of an arthropod is called an _______.
a)
Molting
b)
Chitin
c)
Exoskeleton
d)
Abdomen
2.
Organs on the tip of the abdomen on spiders used to create silk threads
a)
swimmerets
b)
spinnerets
c)
chelicera
d)
chelipeds
3.
What do all invertebrates have in common?
a)
They don't have a backbone
b)
They live in water
c)
They all have a backbone
d)
They have a soft body
4.
Phylum Porifera is known as 
a)
"stinging cells"
b)
"Tentacles"
c)
"Cleaners"
d)
"Sponges"
5.
The elastic fibrous protein found in sponges is called .....
a)
mesohyl
b)
spicules
c)
spongin
d)
tissue
6.

The large opening at the top of the sponge is called the

a)

Osculum

b)

Porocyte

c)

Spicule

d)

Spongocoel

7.
Flatworms have no true body cavity. This means they are ____________________. 
a)
Symmetrical
b)
Sessile
c)
Coelomates
d)
Acoelomates
8.
Which of these is NOT part of the earthworm digestive system? 
a)
pharynx
b)
crop
c)
clittelum
d)
gizzard
9.
Which is a common example of a Hirudinea member?
a)
earthworm
b)
leech
c)
planarian
d)
tapeworm
10.

Reproductive segment of an annelid; creates a cocoon to house fertilized eggs

a)

clittelum

b)

nephridia

c)

pharynx

d)

crop

11.

Which phylum has the largest number of animals on Earth?

a)

echinodermata

b)

arthropoda

c)

asteroidea

d)

crustacea

12.
What two characteristics do all Arthropods have?
a)
two legs per body segment
b)
jointed legs and a cephalothorax
c)
three body segments and metamorphosis
d)
jointed legs and segmented bodies
13.
How many legs does an insect have?
a)
2 
b)
6 
c)
4 
d)
8 
14.
What are three main body parts of an insect? 
a)
Head, chest, tail
b)
Head, antenna, abdomen
c)
Thorax, antenna, heart
d)
Head, thorax, abdomen
15.
The swim bladder of a fish is a sac filled with:
a)
Oil
b)
Gas
c)
Lactic acid
d)
Seminal fluid
16.

Which one of the following is not associated with enchinoderms?

a)

Bilaterally symmetric larvae

b)

Calcarious exoskeleton

c)

Heme based vascular system

d)

Radial symmetric adults

17.
The flexible rod that is present in all Chordates at some stage of their life is called the
a)
nerve cord
b)
gill slit
c)
notochord
d)
backbone
18.

What does the word cephalapod mean?

a)

head tail

b)

heart tail

c)

head foot

d)

heart tail

19.

A body plan where the animal has equal left and right sides

a)

radial symmetry

b)

bilateral symmetry

c)

asymmetry

d)

total symmetry

20.

What is Ecdysis?

a)

Shedding skin

b)

Molting of the exoskeleton found in all arthropods

c)

The process of producing silk in spiders

d)

Segmentation

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