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Seaweeds and Plants

Total questions: 132

Worksheet time: 4hrs 30mins

Name
Class
Date
1.

the stem-like portion of seaweeds

a)

thallus

b)

blade

c)

stipe

d)

pneumatocyst

e)

holdfast

2.

the root-like portion of the seaweed

a)

thallus

b)

pneumatocyst

c)

stipe

d)

holdfast

e)

blades

3.

pneomatocysts

a)

root-like structure of seaweeds

b)

leaf-like structure of seaweeds

c)

stem-like structure of seaweeds

d)

gas-filled bladders that sometimes keep their blades close to the sea surface

4.

How are seaweed classified or sorted in to groups?

a)

By their pigment

b)

By their length

c)

By the water they are found in

d)

By their toxins

5.

Which products contains seaweed?

a)

cosmetics

b)

dairy products - icecream, processed cheeses, yogurts

c)

fertilizers

d)

toothpaste, shampoos, etc.

e)

All of these

6.

green pigment

a)

fucoxanthin

b)

chlorophyll

c)

carotenoids

d)

phycoblins

7.

brown pigment

a)

fucoxanthin

b)

chlorophyll

c)

carotenoids

d)

phycoblins

8.

red pigment

a)

fucoxanthin

b)

chlorophyll

c)

carotenoids

d)

phycoblins

9.
Largest of the algae. The_______ grows to up to _______.
a)
bull kelp, 6'
b)
sea lettuce, 100'
c)
giant kelp, 300'
d)
Japanese kelp, 6'
10.

What Kingdom do seaweeds (multicellular algae) belong?

a)

Plantae

b)

Protista

c)

Animalia

d)

Fungi

11.

What do seaweeds such as giant kelp provide beyond being a food source (primary producer)?

a)

they protect coral reefs

b)

they take salt out of the water

c)

they create a habitat for many organisms

12.

What does chlorophyta mean?

a)

green plant

b)

brown plant

c)

red plant

13.

What accessory pigment makes brown algae usually "yellowish-brown" and allows them to absorb the green wavelength of light in coastal waters?

a)

chlorophyll

b)

fucoxanthin

c)

phycobilins

14.

What accessory pigments do red algae have that make them red/purple?

a)

chlorophyll

b)

fucoxanthin

c)

phycobilins

15.

This part of a seaweed anchors it to the bottom by attaching to rocks.

a)

Thallus

b)

Stipe

c)

Pneumatocysts

d)

Holdfast

16.

These are the gas-filled bladders that help seaweeds float to the surface so that they can get more sunlight.

a)

Blades

b)

Pneumatocysts

c)

Stipe

d)

Holdfast

17.

pneomatocysts

a)

root-like structure of seaweeds

b)

leaf-like structure of seaweeds

c)

stem-like structure of seaweeds

d)

gas-filled bladders that sometimes keep their blades close to the sea surface

18.
a)

stipe

b)

blade

c)

holdfast

d)

pneumatocyst

19.

red pigment

a)

fucoxanthin

b)

chlorophyll

c)

carotenoids

d)

phycoblins

20.

The main types of chlorophyll are

a)

a

b)

b

c)

c

d)

d

21.

The stem-like structures of seaweed

a)

thallus

b)

blades

c)

holdfast

d)

stipes

22.

Green seaweeds store excess energy as

a)

starch

b)

cellulose

c)

chlorophyll

d)

calcium carbonate

23.

What do algae lack that true plants have?

a)

chlorophyll

b)

eukaryotic cells

c)

stem, roots, leaves

d)

just leaves

24.

What are the stems of kelp called?

a)

blades

b)

stipes

c)

holdfast

d)

stem

25.

Which group of macroalgae has the greatest number of marine species?

a)

red

b)

green

c)

brown

d)

blue-green

26.

What is the largest type of seaweed?

a)

sargassum

b)

kelp

c)

sea lettuce

d)

nori

27.

What are the leaflike structures of the seaweed called?

a)

thallus

b)

stipe

c)

leaf

d)

blade

28.

What type of seaweed floats in massive mats and form large brown patches?

a)

kelp

b)

rockweed

c)

sargassum

d)

Padina

29.

What are the three types of algae?

a)

Green, Blue-green, yellow

b)

Brown, yellow, red

c)

brown, yellow, green

d)

green, brown, red

30.

Mangroves cannot survive_______.

a)

freezes

b)

high salinity

c)

hot temperatures

d)

wind

31.

Flowering plants are called __________.

a)

gymnosperms

b)

cycads

c)

angiosperms

d)

algae

32.

Seaweeds are angiosperms.

a)

True

b)

False

33.

What is the dominate salt marsh grass?

a)

kelp

b)

cordgrass

c)

sargassum

d)

eelgrass

34.

What type of roots do mangroves have?

a)

exposed

b)

tap

c)

prop

d)

adventitious

35.

Salt marsh plants, are salt-tolerant, which term below describes this?

a)

halophobic

b)

halophilic

c)

hydrophilic

d)

hydrophobic

36.

Which algae is found most often in fresh water?

a)

red

b)

green

c)

brown

d)

yellow

37.

The rootlike structures on algae are called______.

a)

holdfasts

b)

stipes

c)

hyphae

d)

fibers

38.

Which group of macroalgae has the greatest number of marine species?

a)

red

b)

green

c)

brown

d)

blue-green

39.

Why are plants and algae important to the marine environment?

a)

they are photosynthetic

b)

they are the basis of the marine food chain

c)

they anchor the coast

40.

the stem-like portion of then of seaweeds

a)

thallus

b)

blade

c)

stipe

d)

pneumatocyst

e)

holdfast

41.

the root-like portion of the seaweed

a)

thallus

b)

pneumatocyst

c)

stipe

d)

holdfast

e)

blades

42.

The formal name for seaweed; multicellular algae

a)

seagrass

b)

thallaus

c)

macroalgae

d)

microalgae

43.

body of seaweed

a)

stipe

b)

macroalgae

c)

thallus

d)

blade

44.

Why is phytoplankton/seaweed/kelp important to humans?

a)

food

b)

byproducts are used in food

c)

skeltons are fossil fuel - oil and gas

d)

process CO2 and create O2

e)

All of the above

45.

A is the __.

a)

thallus

b)

holdfast

c)

bladder/pneumatocyst

d)

blade

e)

stipe

46.

E is the __.

a)

thallus

b)

holdfast

c)

bladder/pneumatocyst

d)

blade

e)

stipe

47.
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
48.
What are the gas-filled bladders that help the blades float near the surface?
a)
thallus
b)
holdfast
c)
stipe
d)

pneumatocyst

49.
Which part of the seaweed is a stem-like structure that supports the blades?
a)
thallus
b)
stipe
c)
holdfast
d)
pneumatocysts
50.

Which is true of prokaryotic and eukaryotic cells?

a)

Prokaryotic cells are larger than eukaryotic cells.

b)

Eukaryotic cells do not have nuclei, and prokaryotic cells do have nuclei.

c)

Prokaryotic cells lack membrane-bound organelles, and eukaryotic cells contain membrane-bound organelles.

d)

Eukaryotic cells are simpler than prokaryotic cells.

51.
First type of cell to appear on Earth?
a)
Plant
b)
Animal
c)
Prokaryotic
d)
Eukaryotic
52.
Which of the following in NOT a characteristic of eukaryotic cells?
a)
DNA is separated from the cytoplasm by a nuclear membrane
b)
Large
c)
Complex 
d)
Lack membrane-bound organelles
53.

Provides support and height to the leaf-like structures of the seaweed.

a)

Blade

b)

Holdfast

c)

Pneumatocyst / bulb / gas bladder

d)

Stipe

54.

Attaches the seaweed to a rocky surface

a)

Blade

b)

Holdfast

c)

Bulb / gas bladder

d)

Stipe

55.

Primary photosynthetic structure of the seaweed (where the photosynthesis takes place)

a)

Blade

b)

Holdfast

c)

Bulb / Gas Bladder Pneumatocyst

d)

Stipe

56.

Allows the leaf-structures of the seaweed to float

a)

Blade

b)

Holdfast

c)

Bulb / Gas Bladder / Pneumatocyst

d)

Stipe

57.

Which group of algae contains the larges species of seaweed, including kelp and sargasso?

a)

red algae

b)

green algae

c)

purple algae

d)

brown algae

58.

Which group of algae contains mostly freshwater species and is most similar to land plants?

a)

red algae

b)

green algae

c)

purple algae

d)

brown algae

59.

Why must kelp live in deep, calm waters?

a)

nutrients are more abundant in deep, calm waters than in warm, turbid waters

b)

the photosynthetic pigments of kelp are more efficient in the depths than in the shallows

c)

rocky terrain, the preferred substrate of kelp, is only found in deep, calm waters

d)

the holdfasts are less likely to be ripped off the rocks in calm waters than in turbid waters

60.

What is B pointing to?

a)

Blade

b)

Holdfast

c)

Pneumatocyst / Gas Bladder / Bulb

d)

Stipe

61.

What is C pointing to?

a)

Blade

b)

Holdfast

c)

Gas Bladder / Bulb / Pneumatocyst

d)

Stipe

62.

What is D pointing to?

a)

Blade

b)

Holdfast

c)

Bulb / Gas Bladder / Pneumatocyst

d)

Stipe

63.

Some species of kelp are used in ice cream.

a)

True

b)

False

64.

Sea otters often wrap themselves in kelp while sleeping

a)

True

b)

False

65.

This term refers to organisms that can tolerate salty conditions.

a)

Thermophyte

b)

Halophyte

c)

oxyophyte

d)

saltophyte

66.

Mangroves can only be found in ___________ regions

a)

Polar

b)

Temperate

c)

desert

d)

tropical

67.

Seagrasses form seagrass meadows which provide ________ to many organisms

a)

food

b)

habitat

c)

oxygen

d)

pollution

68.

What Kingdom do seaweeds (multicellular algae) belong?

a)

Plantae

b)

Protista

c)

Animalia

d)

Fungi

69.

What do seaweeds such as giant kelp provide beyond being a food source (primary producer)?

a)

they protect coral reefs

b)

they take salt out of the water

c)

they create a habitat for many organisms

70.

What does chlorophyta mean?

a)

green plant

b)

brown plant

c)

red plant

71.

What accessory pigment makes brown algae usually "yellowish-brown" and allows them to absorb the green wavelength of light in coastal waters?

a)

chlorophyll

b)

fucoxanthin

c)

phycobilins

72.

This part of a seaweed anchors it to the bottom by attaching to rocks.

a)

Thallus

b)

Stipe

c)

Pneumatocysts

d)

Holdfast

73.

The formal name for seaweed; multicellular algae

a)

seagrass

b)

thallaus

c)

macroalgae

d)

microalgae

74.

Which type of algae has red pigment?

a)

Chlorophyta

b)

Phaeophyta

c)

Rhodophyta

d)

Merophyta

75.

Which type of Algae has green pigments?

a)

Chlorophyta

b)

Phaeophyta

c)

Rhodophyta

d)

Merophyta

76.

Whyich type of algae has brown/yellow pigments?

a)

Chlorophyta

b)

Phaeophyta

c)

Rhodophyta

d)

Merophyta

77.

A is the __.

a)

thallus

b)

holdfast

c)

bladder/pneumatocyst

d)

blade

e)

stipe

78.

E is the __.

a)

thallus

b)

holdfast

c)

bladder/pneumatocyst

d)

blade

e)

stipe

79.

Why is seaweed NOT considered a true plant?

a)

Does photosynthesis

b)

No Veins in the Leaves or Stems

c)

Forms the base of many food chains

d)

Has roots

80.

Salt marsh plants have these that help with the excess salt

a)

Roots

b)

Flowers

c)

Salt glands

d)

Holdfast

81.

The formal name for seaweed; multicellular algae

a)

seagrass

b)

thallaus

c)

macroalgae

d)

microalgae

82.

Why is phytoplankton/seaweed/kelp important to humans?

a)

food

b)

byproducts are used in food

c)

skeltons are fossil fuel - oil and gas

d)

process CO2 and create O2

e)

All of the above

83.

Which products contains seaweed?

a)

cosmetics

b)

dairy products - icecream, processed cheeses, yogurts

c)

fertilizers

d)

toothpaste, shampoos, etc.

e)

All of these

84.

Red Mangrove is a/an...

a)

Brown Algae

b)

Red Algae

c)

Green Algae

d)

Flowering Plant

85.

Marine microbes that photosynthesize and provide energy to the food web are called:

a)

photospores

b)

primary producers

c)

endospores

d)

bateriophages

86.

Prokaryotes do not have

a)

DNA

b)

cell walls

c)

membrane bound organelles

d)

ribosomes

87.

Flowering plants have

a)

true leaves

b)

transport tissue (xylem and phloem)

c)

roots

d)

all answers are correct

88.

Seagrasses are important because:

a)

they provide habitat for many animals

b)

they can protect coral reefs from sediment

c)

they are nurseries for juvenile fish

d)

all answers are correct

89.

Cordgrasses can survive in salt marshes because

a)

they have glands to excrete excess salt

b)

they have thick roots

c)

they can chemosynthesis sulfides in the sediment

90.

Mangroves trees produce

a)

broad-shaped seedlings to drift away on currents

b)

pencil-shaped seedlings to stick in the mud

c)

parachute-seedlings to drift on coastal winds

91.

Marine vascular flowering plants include all of the following except:

a)

Kelps

b)

Seagrasses

c)

Mangroves

d)

Surf grass

e)

Cord grass

92.

Marine microbes that photosynthesize and provide energy to the food web are called:

a)

photospores

b)

primary producers

c)

endospores

d)

bateriophages

93.

The only TRUELY marine plants are...

a)

Seagrasses

b)

Cordgrasses

c)

Mangroves

d)

Turtlegrasses

94.

Which of the following is a threat to marine plants?

a)

Dredging

b)

Prop Scars

c)

Coastal Development

d)

All of these are correct

95.

Seagrasses grow totally under water

a)

True

b)

False

96.

All of the following are types of common seagrasses EXCEPT:

a)

Snake grass

b)

Turtle grass

c)

Eelgrass

d)

Manatee grass

e)

Paddle grass

97.

Which is the most widely distributed seagrasses?

a)

Surf grass

b)

Turtle grass

c)

Eelgrass

d)

Manatee grass

e)

Paddle grass

98.

What type of plant is a seagrass?

a)

Algae

b)

Moss

c)

Angiosperm

d)

Gymnosperm

99.

Seagrasses are adapted to thrive in environments with:

a)

Extremely low salinity

b)

Fluctuating salinity levels

c)

Hyper-saline conditions

d)

Freshwater conditions

100.

Seagrasses are considered indicator species for:

a)

Coral bleaching

b)

Water quality

c)

Soil erosion

d)

Air pollution

101.

Seagrass meadows are important for fisheries as they provide:

a)

Protection against storms

b)

Nursery areas for juvenile fish

c)

Food for large predators

d)

Breeding grounds for crustaceans

102.

Seagrasses are threatened by human activities such as dredging and coastal construction. What is the term for this type of threat?

a)

Habitat fragmentation

b)

Invasive species

c)

Habitat destruction

d)

Pollution

103.

The specialized root system of seagrasses is adapted to:

a)

Filter pollutants

b)

Anchor the plants

c)

Store nutrients

d)

Absorb oxygen from the air

104.

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

a)

Yellow

b)

Brown

c)

Red

d)

Green

105.

Why are pneumatocysts helpful for seaweeds?

a)

Attach to ocean surfaces

b)

Absorbs nutrients from the water

c)

Allows seaweed to float so it can get more sunlight

d)

Provides food to other marine organisms

106.

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

a)

Stems

b)

Roots

c)

Leaves

107.

What is a way that plants have adapted to live in salt water?

a)

Salt Glands

b)

Waxy Coverings

c)

Succulent Leaves and Stems

d)

All of these are correct

108.

How do marsh grasses adapt to their environment?

a)

Marsh grasses adapt to their environment by having short, rigid stems, deep root systems, and salt intolerance.

b)

Marsh grasses adapt to their environment by growing in dry, arid conditions, having thick leaves, and high water requirements.

c)

Marsh grasses adapt to their environment by being unable to tolerate changes in salinity, having long taproots, and growing in deep water.

d)

Marsh grasses adapt to their environment by having long, flexible stems, shallow root systems, and salt tolerance.

109.

Why are mangroves important in coastal ecosystems?

a)

Mangroves provide habitat, protect coastlines, filter pollutants, and maintain water quality.

b)

Mangroves have no impact on coastal ecosystems

c)

Mangroves decrease biodiversity in coastal ecosystems

d)

Mangroves contribute to coastal erosion

110.

What are some characteristics of sea grasses?

a)

Sea grasses are not flowering plants.

b)

Sea grasses do not grow in marine environments.

c)

Sea grasses are flowering plants that grow in marine environments and provide habitat and food for marine species.

d)

Sea grasses do not provide habitat and food for marine species.

111.

What are some threats to sea grasses?

a)

drought, hurricanes, erosion

b)

deforestation, invasive species, ocean acidification

c)

tourism, sedimentation, algal blooms

d)

pollution, coastal development, climate change, overfishing

112.

Which of the following is not a characteristic of sea grasses? A) They are flowering plants B) They can tolerate high salinity C) They have extensive root systems D) They are not affected by pollution

a)

C

b)

D

c)

B

d)

A

113.

True or False: Mangroves act as natural buffers against storms and erosion.

a)

False

b)

Mangroves actually worsen storms and erosion

c)

Mangroves have no effect on storms and erosion

d)

True

114.

Which adaptation allows marsh grasses to survive in waterlogged environments? A) Long roots B) Thick waxy leaves C) Ability to filter salt D) Ability to photosynthesize underwater

a)

B) Thin delicate leaves

b)

C) Inability to filter salt

c)

D) Inability to photosynthesize underwater

d)

A) Long roots

115.

True or False: Mangroves provide important nursery habitats for many marine species.

a)

Mangroves are harmful to marine species

b)

True

c)

False

d)

Mangroves have no impact on marine species

116.

What is the primary function of the root system in mangroves?

a)

To absorb nutrients from the soil

b)

To provide support to the tree

c)

To filter salt from the water

d)

All of the above

117.

Which of the following is a characteristic of marsh grasses? A) They have a high tolerance for salt B) They have a low tolerance for salt C) They prefer dry, arid conditions D) They have a high tolerance for drought

a)

A

b)

B

c)

C

d)

D

118.

True or False: Sea grasses are important for maintaining biodiversity in marine ecosystems.

a)

True

b)

False

c)

Sea grasses have no impact on biodiversity

d)

Sea grasses decrease biodiversity

119.

Which of the following is not part of the harsh environments mangroves endure

a)

High salt

b)

Hard ground

c)

Low oxygen

d)

Varying Tides

120.

What are these specialized roots?

a)

phragmities

b)

prop roots

c)

onion roots

d)

rhizomes

121.

What is the general name for mangrove seeds?

a)

prop roots

b)

lenticles

c)

propagules

d)

seedlings

122.

warm shallow waters; muddy sediment on seafloor, nutrient rich. Trees provide shelter & nursery for many marine organisms (fish, crabs, oysters, etc)

a)

Mangrove Forest

b)

Coral Reef

c)

Open Ocean

d)

Rocky Shore

123.
Which term refers to the entire body of the seaweed?
a)
blade
b)
thallus
c)
pneumatocyst
d)
stipe
124.

Which of the following is not a significant limiting factor for seaweed?

a)

sunlight

b)

oxygen

c)

place to anchor

d)

nutrients

125.

Which of the following is a vascular plant.

a)

sea grass

b)

seaweed

c)

algae

d)

moss

126.

Which of the following is true about seaweed?

a)

They are not plants

b)

They are unicellular algae

c)

They can vary greatly in size

d)

They generate 5% or less of the oceans carbohydrates

127.

Which of the following is true about sea grasses?

a)

Their roots help them absorb nutrients

b)

The don't have leaves or stems

c)

They are nonvascular

d)

They are also called seaweed

128.

How are seaweeds classified?​

a)

Size

b)

Photosynthetic accessory pigments

c)

Habitat

d)

Salinity tolerance

129.

Which of the following products is seaweed NOT used in?

a)

plastic

b)

ice cream

c)

soaps

d)

ink

130.

What type of producers can survive near hydrothermal vents?

a)

extremophiles

b)

sea grasses

c)

diatoms

d)

all bacteria

131.

Which of the following are large, flowering plants that grow partially submerged in low, muddy tropical/subtropical coastal areas.​

a)

Phytoplankton

b)

Seaweeds

c)

Sea grasses

d)

Mangroves

132.

Flowering plants have

a)

true leaves

b)

transport tissue (xylem and phloem)

c)

roots

d)

all answers are correct

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