wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Freshwater, Estuaries, and Marine Ecosystems

Total questions: 28

Worksheet time: 25mins

Name
Class
Date
1.
A natural system linked by living (plants, animals) and nonliving (soil, air, water) things?
a)
Ecosystem
b)
Riverbasin
c)
Watershed
d)
Estuary
2.
When salt and fresh water mix, what is the new water substance called?
a)
Brackish Acid
b)
Fresh Water
c)
Salt Water
d)
Brackish Water
3.
Estuaries are known as the __________ of the sea.
a)
nurseries
b)
classroom
c)
grocery store
d)
garden
4.
estuaries are a transition zone between 
a)
warm and cool water
b)
shallow and deep water
c)
turbid and clear water
d)
salt water and freshwater
5.
estuaries have 
a)
low productivity and low biomass
b)
high productivity and low biomass
c)
high productivity and high biomass 
d)
low productivity and high biomass
6.
estuaries are important because
a)
they are the breeding ground for whales
b)
have deep water with plenty of producers
c)
they trap nutrients from the ocean 
d)
90% of marine animals spend some part of their life there
7.
which is not a characteristic of the estuary 
a)
high nutrient content
b)
salinity fluctuation 
c)
shallow water with low predation 
d)
stable bottom with low sediment
8.
which is not an estuary 
a)
a sea grass community 
b)
a sandy beach
c)
mud flat
d)
salt marsh
9.
organisms that break down plant tissues and release nutrients for consumers
a)
shrimp
b)
plankton
c)
algae
d)
decomposers
10.
plants that adapt to living in salty environments
a)
hydrophytes
b)
epiphytes
c)
halophytes
d)
zooplankton
11.
most common plant in the salt marsh
a)
detritus
b)
black needlerush
c)
saltwort
d)
spartina
12.

What are 3 common names of Mangrove?

a)

Black Mangroves

b)

Violet Mangroves

c)

Red Mangroves

d)

White Mangroves

e)

Yellow Mangroves

13.
Which is the MAIN threat to the Mangrove Swamps/Forests?
a)
Overfishing
b)
Destruction of Coral Reefs
c)
The pollutants
d)
Climate Changing 
14.
What is the significance to the Mangroves?
a)
They protect shorelines from bad weather
b)
mangrove forests are home to a large variety of fishes
15.

Plants like glasswort live in salt pannes with high salinity and are considered:

a)

Stenohaline

b)

Stenothermal

c)

Euryhaline

d)

Holoplankton

16.

The ‘Z’ shaped leading edge where freshwater and saltwater meets is called

a)

Salt wedge

b)

Halocline

c)

Euryhaline

d)

Stenohaline

17.

Organisms can only endure a narrow range of salinity are called

a)

Stenohaline Marine Species

b)

Euryhaline Marine Species

c)

Freshwater Species

d)

Brackish Water Species

18.
What is a watershed?
a)
Land that collects and channels water froma small body of water to a larger body of water
b)
the shape of the land determined by elevation
c)
A natural stream of water of considerable  volume
d)
a river and all its tributaries
19.
What is all the water that runs off the surface of the land and washes into rivers, streams, and other waterways called?
a)
Runoff
b)
Storm Drain
c)
Surface Water
d)
Tributary
20.
Which best explains why inhabitants of an estuary must adapt to frequent environmental changes?
a)
Estuaries receive little sunlight.
b)
The water temperature is constantly warm.
c)
The salinity of the water is constantly changing.
d)
Low levels of oxygen are absorbed by the water.
21.

An area of land that drains into a river or lake is called

a)

an ecosystem

b)

a watershed

c)

a wetland

d)

a habitat

22.

Which is the correct statement regarding estuary?

a)

It supplies freshwater to lakes.

b)

It prevents saltwater from entering a river.

c)

It supplies all of the minerals that make ocean water salty.

d)

It acts as a filtering system to remove some pollutants from water runoff.

23.
Roots of Spartina
a)
detritus
b)
rhizomes
c)
circadian rhythm
d)
stridgelate
24.
bits and pieces of organic matter suspended in water
a)
detritus
b)
rhizomes
c)
turbidity
d)
stridgelate
25.
Most important organism in the salt marsh
a)
Spartina
b)
Melampus
c)
Argopecton
d)
Angel Wing
26.

The loss of estuaries and mangrove forests is particularly serious because these ecosystems:

a)

provide nesting or resting areas to many seabirds.

b)

are among the most productive of all marine ecosystems

c)

provide nursery habitats to many species.

d)

directly or indirectly provide food to many species

e)

All of the above

27.

Succulents are plants that

a)

excrete salt by way of salt glands

b)

accumulate water in their tissues

c)

take in salt to compensate for water loss

d)

lose salt and water through their roots

28.

outwelling is important because

a)

it provides food and nutrients to other organisms

b)

maintains high primary production

c)

allows plants to adapt without oxygen

d)

releases large amounts of oxygen

Similar Resources on Wayground

The science of Biology Ch. Test A

25 questions

The science of Biology Ch. Test A

quiz

Worksheet

•

9th - 12th Grade

Heredity Vocabulary

25 questions

Heredity Vocabulary

quiz

Worksheet

•

9th Grade

Human Bio- Skeletal Muscle

24 questions

Human Bio- Skeletal Muscle

quiz

Worksheet

•

11th Grade

Intro to Environmental Science- Bio & Chem Recap

25 questions

Intro to Environmental Science- Bio & Chem Recap

quiz

Worksheet

•

11th Grade

CH 5 Populations

23 questions

CH 5 Populations

quiz

Worksheet

•

9th Grade

T2 | BS 3 & 4 |MAX editie | Voeding en vertering

23 questions

T2 | BS 3 & 4 |MAX editie | Voeding en vertering

quiz

Worksheet

•

12th Grade

Revision - Unit 8 and 9

23 questions

Revision - Unit 8 and 9

quiz

Worksheet

•

12th Grade - University

IA 4 Bio. Review

23 questions

IA 4 Bio. Review

quiz

Worksheet

•

9th - 12th Grade