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Plankton and Marine Plants

Total questions: 35

Worksheet time: 25mins

Name
Class
Date
1.
What are tiny organisms that float near the surface of the water?
a)
plankton
b)
organisms
c)
abiotic factor
d)
insects
2.

What organism(s) are pictured here?

a)

Diatom

b)

Dinoflagellate

c)

Zooplankton

d)

Nekton

3.
Which is a kind of phytoplankton?
a)
 lion’s mane jellyfish
b)
sea butterfly 
c)
algae
d)
copepod 
4.
Plankton that uses photosynthesis:
a)
Phytoplankton
b)
Zooplankton
5.
What do dinoflagellates use to move?
a)
cilia
b)
1 flagella
c)
2 flagella
d)
spines
6.

Jellyfish are categorized as:

a)

Holoplankton

b)

Meroplankton

c)

Phytoplankton

d)

Benthos

7.
What eats phytoplankton?
a)
Bacteria
b)
Zooplankton
c)
Mammals
d)
Humans
8.
The larvae of crabs and krill belong to which group of plankton?
a)
Phytoplankton
b)
Meroplankton
c)
Holoplankton
d)
None of the above
9.
Which will most likely result if there is increased upwelling in a coastal area?
a)
more aquatic life
b)
less nutrients in the water
c)

higher water temperatures
d)

fewer nitrates
10.
Why are many fishing boats found near ocean upwellings?
a)
There is less vegetation there.
b)
Upwellings are found in more shallow waters, so boats do not need deep anchorage.
c)

The water is less turbulent there.
d)
Many marine species gather there to eat the nutrients brought to the surface.
11.
Aquatic food webs begin with what?
a)
krill
b)
zooplankton
c)
phytoplankton
d)
plankton
12.

What organism(s) are pictured here?

a)

Diatoms

b)

Dinoflagellates

c)

Zooplankton

d)

Nekton

13.

What organism(s) are pictured here?

a)

Diatoms

b)

Dinoflagellates

c)

Zooplankton

d)

Nekton

14.

How much energy is passed from one trophic level to the next?

a)

10%

b)

90%

c)

75%

d)

50%

15.
The scientific name of an organism is made of which two taxonomic groups?
a)
Family & species
b)
Order & Genus
c)
Kingdom & Phylum
d)
Genus & species
16.
Identify this seaweed. (image b)
a)
Sea Grass
b)
Sea Lettuce
c)
Irish Moss
d)
Sargassum
17.
What is the leaf-like flattened portion of the seaweed?
a)
holdfast
b)
thallus
c)
blade
d)
stipe
18.
Which type of algae lives primarily in freshwater?
a)
Green algae
b)
Red algae
c)
Brown algae
19.
Which type of algae includes sargasso weed and kelp?
a)
Green algae
b)
Red algae
c)
Brown algae
20.
What is the main pigment in green algae?
a)
chlorophyll
b)
phycobilins
c)
fucoxanthins
21.
Which part of the seaweed acts as a root-like structure that attaches the seaweed to a hard surface?
a)
stipe
b)
holdfast
c)
blade
d)
thallus
22.
Which part of the seaweed is a stem-like structure that supports the blades?
a)
thallus
b)
stipe
c)
holdfast
d)
pneumatocysts
23.
A unicellular algae with cell walls filled with silica is called
a)
dinoflagellates
b)
red algae
c)
diatoms
d)
green algae
24.
The immature stage of an organism
a)
Larva
b)
Nekton
c)
Benthic
d)
Sessile
25.
______ are all organisms that swim freely, independent of currents.
a)
Benthic 
b)
Zooplankton 
c)
Nekton 
d)
plankton
26.
Organisms that live on the bottom of aquatic ecosystems are known as 
a)
littoral 
b)
benthic 
c)
nekton
d)
whales
27.
Why might some whales migrate to the northern Atlantic waters in the spring?
a)
The whales prefer the cold fresh water of the northern Atlantic.
b)
Whales can travel to northern waters after the thermocline disappears.
c)
Plankton are abundant in northern waters in the spring.
d)
The southern Atlantic waters turn green because there is too much algae.
28.
What is the newly hatched young of many of the marine animals that look very different for their adult forms?
a)
hatchlings
b)
babies
c)
larva
d)
plankton
29.
The copepod eats other plankton its entire life and stays plankton, thus it is termed__________.
a)
nekton
b)
holoplankton
c)
meroplankton
30.
These tiny shrimp are the important source of food for whales among other animals.
a)
brine shrimp
b)
Gulf Coast prawns
c)
krill
d)
Tiger shrimp
31.

How a marine plant resists dehydration

a)

waxy leaf coverings

b)

holdfasts

c)

cell walls made of cellulose

d)

produce excess oxygen

32.

Holdfasts, stipes, blades & pneumatocysts are found

a)

on red algae

b)

on mangroves

c)

on Sargassum

d)

on kelp

33.

Which of the following is not one of the 3 main groups of seaweed?

a)

Yellow

b)

Brown

c)

Red

d)

Green

34.

Upper part of the oceanic zone that receives light

a)

benthic zone

b)

photic zone

c)

aphotic zone

d)

neritic zone

35.

What part of sea grasses help stabilize the plant and prevent erosion?

a)

Stems

b)

Roots

c)

Leaves

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