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Porifera, Cnidarians, & Plathelminthes

Total questions: 76

Worksheet time: 55mins

Name
Class
Date
1.

The elastic fibrous protein that provides support in sponges is called .....

a)

mesohyl

b)

spicules

c)

spongin

d)

tissue

2.
The spongin and spicules make up what in sponges?
a)
digestive tract
b)
skin
c)
stomach
d)
skeleton
3.
Choanocytes are also known as _____.
a)
epithelial cells
b)
amoeboid cells
c)
collar cells
d)
pore cells
4.

Water enters sponges through the ______.

a)

incurrent pore

b)

oscula/osculum

5.

Which cells in sponges are responsible for nutrient transport?

a)

porocytes

b)

pinacocytes

c)

choanocytes

d)

amoebocytes

6.
Asexual reproduction of freshwater and some marine sponges involves the formation of capsules called
a)
larva
b)
cytes
c)
gemmules
d)
lococytes
7.

Structure C is a

a)

choanocyte

b)

amoeboid cell

c)

spicule

d)

pinacocyte

8.

Structure B is the

a)

choanocyte

b)

osculum

c)

mesohyl

d)

pore

9.
Sponges belong to which group of animals?
a)
Vertebrates
b)
Invertebrates
10.
Animals that lack a backbone are called
a)
invertebrates
b)
vertebrates
c)
fungi
d)
organism
11.
Sponges get their food by 
a)
going through photosynthesis
b)
decomposing it
c)
sponges do not eat
d)
filter feeding
12.
Sponges are ________ which means attached to one spot.
a)
immobile
b)
mobile
c)
sessile
d)
spicule
13.
Most sponges are hermaphrodites.  What does this mean?
a)
sponges can produce their own food
b)
sponges can produce both eggs and sperm
c)
sponges cannot reproduce
d)
sponges can swim around
14.
What type of symmetry does a sponge have?
a)
bilateral symmetry
b)
radial symmetry
c)
asymmetrical
15.
What is the name of the phylum sponges belong to?
a)
mammals
b)
chordate
c)
cnidarians
d)
Porifera
16.
___________ are tiny hard particles that give a sponge support and can provide protection when they stick out of a sponge.
a)
spongin
b)
bones
c)
buds
d)
spicules
17.

cells have sticky, funnel-shaped collar to collect food particles and a flagellum that creates a water current

a)

amoebocyte

b)

ostiocyte

c)

pinacocyte

d)

choanocyte (collar cell)

18.
large opening at the top of a sponge where water exits.
a)
ostia
b)
osculum
c)
orifice
d)
opening
19.

What is true about sponges?

a)

They have organs

b)

They have bilateral symmetry

c)

They have a true coelom

d)

They are simplest animals

20.
Which Phylum does this animal belong?
a)
Phylum Porifera
b)
Phylum Cnidaria
21.
What type of symmetry do cnidarians have
a)
asymmetrical
b)
bilateral
c)
radial
22.
Which of the following is a correct description of the Cnidarian digestive tract?
a)
A complete digestive tract consisting of two openings.
b)
A complete digestive tract consisting of one opening
c)
An incomplete digestive tract consisting of two openings.
d)
An incomplete digestive tract consisting of one opening.
23.
Which of the following is the correct description of the nervous system of Cnidarians?
a)
individual cellular response
b)
concentration of nerve cells at one end
c)
cerebral ganglia connected to a nerve cord
d)
a nerve net with sense organs for light detection and balance
24.
What are the organelles inside the stinging cells that inject paralyzing toxins into their prey?
a)
pinacocytes
b)
lysomatocyts
c)
choanocytes
d)
nematocysts
25.
What surrounds the mouth of Cnidarians?
a)
guard cells
b)
pinococytes
c)
tentacles
d)
spines
26.
Many cnidarians feature 2 body forms, the asexual ____________, and the sexual _____________.
a)
blastula, planula
b)
medusa, polyp
c)
planula, blastula
d)
polyp, medusa
27.
Anemones belong to which phylum?
a)
Cnidaria
b)
Porifera
c)
Echinodermata
d)
Platyhelminthes
28.
What is the term for the jelly like layer of Cnidarians?
a)
mesohyl
b)
mesophyll
c)
mesoglea
d)
mesopotamia
29.
Anemones and corals belong in ______.
a)
Staurozoa
b)
Anthozoa
c)
Cubozoa
d)
Scyphozoa
30.
How many germ (tissue) layers do Cnidarians feature?
a)
1
b)
2
c)
3
d)
4
31.
To which kingdom do the sponges and cnidarians belong?
a)
animalia
b)
plantae
c)
bacteria
d)
fungi
32.

What do hydra use their Cnidocytes for?

a)

stinging its prey

b)

storing its heart and lungs

c)

feeling its way

d)

digesting its food

33.
A hermaphrodite 
a)
has both sex parts
b)
is male only
c)
is female only
d)
is neither male nor female
34.
What type of symmetry do cnidarians have?
a)
asymmetrical
b)
bilateral
c)
radial
35.
How is this animal reproducing?
a)
Asexual Budding
b)
Sexual 
c)
Gemmule Formation
d)
Asexual Mitosis
36.
Identify the blue structure.
a)
Gastrovascular Cavity
b)
Asexual Bud
c)
Basal Disk
d)
Mesoglea
37.
A concentration of nervous tissue (brain) and sense organs at the anterior end is called
a)
cephalization
b)
calphalonization
c)
hyperventilization
d)
brainification
38.
On which surface is the planarian's mouth located?
a)
Dorsal
b)
Ventral
c)
Anterior
d)
Posterior
39.
What would help you determine if an organism is in kingdom Animalia?
a)
Chloroplasts
b)
Unicellular
c)
Heterotroph
d)
Prokaryote
40.
Which of the following is the correct description of the nervous system of Cnidarians?
a)
individual cellular response
b)
concentration of nerve cells at one end
c)
cerebral ganglia connected to a nerve cord
d)
a nerve net with sense organs for light detection and balance
41.
Which of the following is a correct description of the polyp body form?
a)
It is sessile and the tentacles and mouth point downward.
b)
It is sessile and the mouth and tentacles point upward.
c)
It is mobile and the tentacles and mouth point downward.
d)
It is mobile and the tentacles and mouth point upward.
42.
Instead of a brain or central nervous system, jelly fish have what in place to help them respond to the environment.
a)
Stinging Cells
b)
Nerve Net
c)
Internet
d)
Chloroplast
43.
What form is this organism? (Image 1)
a)
Polyp
b)
Medusa
44.

In Cnidarians, digestion occurs in the ______.

a)

epidermis

b)

manubrium

c)

Gastrovascular cavity

d)

tentacles

45.
Stinging cells of a Cnidarian are called:
a)
Collar cells
b)
Choanocytes
c)
Cnidocytes
d)
Gonads
46.

On a medusa, the mouth points

a)

up

b)

down

47.

Nematocysts are found...

a)

in the mouth

b)

in the bell

c)

in the tentacles

48.

Digestive system of a cnidarian:

a)

Two openings: one for food to enter, one for waste to exit.

b)

Open opening: Food enters and waste exits at the same place

c)

Digestion takes place in the individual cells

d)

No digestive system

49.

Cnidarian reproduction is usually_____________ but can be __________

a)

asexual, sexual

b)

sperm and egg, regeneration

c)

asexual, regeneration

d)

budding, asexual

50.
The hard "skeleton" structures in a sponge are called...
a)
Spongin
b)
Spicules
c)
Amebocytes
d)
Pinococytes
51.
What kind of symmetry does a Cnidarian have?  
a)
No Symmetry 
b)
Bilateral Symmetry 
c)
Radial Symmetry 
d)
Square
52.
Sponges can reproduce asexually through a process called __________________.
a)
budding
b)
regeneration only
c)
fusion
d)
amphiblastula
53.
Which body form is represented by this diagram?
a)
Mesoglea
b)
Medusa
c)
Moses
d)
Nematocyst
54.

How do flatworms obtain food?

a)

They have pharynx that extends from the mouth

b)

They have a mouth separate from its anus

c)

They obtain nutrition by absorbing through the environment

d)

They have several openings to their gastrovascular cavity

55.
Flat worms have eyespots that function to
a)
detect light and move away from the light
b)
detect light and move towards the light
c)
detect food sources and move towards the source
d)
detect chemicals and move away from chemicals
56.
Why are scientists studying the flatworms, planarians?
a)
Insights into regeneration and stem cells.
b)
Insights into nutritional uses of algae.
c)
Insights into negative photoreceptors
d)
Insights into parasite life cycles 
57.
Letter A represents the
a)
eyespots
b)
pharynx
c)
gastrovascular cavity
d)
ganglia
58.
Letter C represents
a)
Pharynx
b)
Eyespot
c)
Ganglia
d)
VentralNerve cords
59.
Letter D represents the
a)
pharynx
b)
eyespots
c)
ganglia
d)
gastrovascular cavity
60.
Letter E represents the
a)
pharynx
b)
ganglia
c)
ventral nerve cords
d)
gastrovascular cavity
61.
What type of symmetry do flatworms have?
a)
radial
b)
bilateral
c)
no symmetry
d)
cephalization
62.
Planarians can reproduce sexually and asexually
a)
true
b)
false
63.
How do planarians reproduce asexually?
a)
laying eggs
b)
they don't reproduce asexually
c)
regeneration of missing parts
d)
planarians fertilize their own eggs
64.
Organ on the middle of the ventral side of planarians that takes in their food
a)
eyespots
b)
pharynx
c)
tegument 
d)
proglottids
65.

What phylum do flatworms belong to?

a)

platyhelminthes

b)

nematoda

c)

planarian

d)

cnidaria

66.
When an animal regrows a missing body part it has...
a)
Budded
b)
Regenerated
67.

What is an animal that has both male and female organs?

a)

Acoelomate

b)

Intersex

c)

Hermaphrodite

68.
Which of the following is a structure associated with the nervous system?
a)
Nephridia
b)
Ganglia
c)
Flame cells
d)
Crop
69.
Platyhelminthes worms are
a)
acoelomates
b)
pseudocoelomates
c)
eucoelomates
70.
Flat worms can reproduce 
a)
sexually 
b)
asexually
c)
both sexually and asexually
71.

Which of the following shows are cnidarians and sponges differ in obtaining food?

a)

Cnidarians are filter feeders; sponges use tentacles and nematocysts to capture food.

b)

Sponges are filter feeders; cnidarians use tentacles and nematocysts to capture food.

c)

Cnidarians only use sexual reproduction; sponges use both asexual and sexual reproduction.

d)

Sponges only use sexual reproduction; cnidarians use both asexual and sexual reproduction.

72.
What is the name of the jellyfish larva?
a)
planula
b)
blastula
c)
medulla
73.
What level of organization cnidarians have is...
a)
specialized cells
b)
tissues
c)
organs
d)
organ systems
74.
What is the outer layer in a triploblastic organism called?
a)
ectoderm
b)
endoderm
c)
mesoderm
75.
If the mouth develops first, then the organism is a 
a)
protostome
b)
deuterostome
76.
This form of cnidaria is known as a _______.
a)
polyp
b)
medusa

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