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Marine Algae and Plants

Total questions: 35

Worksheet time: 35mins

Name
Class
Date
1.

___________________ are multicellular algae that live in the sunlit waters of the ocean.

a)

Seaweeds

b)

Brushweed

c)

oceanweed

d)

land plants

2.

Organisms that are ________________ are made up of more that one cell.

a)

unicellular

b)

many cellular

c)

multicellular

d)

single celled

3.

You can find seaweed on the beach forming the ________________ which is composed of seaweed and debris washed up on the beach from the tide.

a)

rackline

b)

strandline

c)

tide line

d)

both a and b

4.

The leafy part of seaweed is called the

a)

main leaf

b)

Thallus

c)

Challus

d)

spores

5.

a _________________ is a reproductive cell that contains the haploid number of chromosomes.

a)

spore

b)

gamete

c)

zygote

d)

thallus

6.

__________________ are reproductive cells that contain the haploid number of chromosomes

a)

gametes

b)

zygote

c)

spore

d)

thallus

7.

Gametes fuse to form a _____________________.

a)

thallus

b)

spore

c)

zygote

d)

gamete

8.

True of False: gametes contain the diploid number of chromosomes

a)

true

b)

false

9.

Green algae is classified into the phylum

a)

Chlorophyta

b)

Rhodophyta

c)

Phaeophyta

d)

none of the above

10.

Green algae is green because of the pigment

a)

xanophyll

b)

phaoephyll

c)

chlorophyll

d)

chloroplast

11.

True or False: Green Algae has roots, stems and leaves

a)

True

b)

False

12.

Brown algae is classified into the phylum ____________________.

a)

phaeophyta

b)

rhodophyta

c)

chlorophyta

d)

all of the above

13.

True or False: Brown algae is important for shelter and nutrients for other organisms

a)

True

b)

False

14.

True or False: Brown algae is not used in food

a)

True

b)

False

15.

The most common brown algae found on the rocky shore is

a)

Rockweed

b)

irish moss

c)

sea lettuce

d)

ribbon weed

16.

Rock weed has air filled pouches called _____________________ to keep it afloat at high tide

a)

air pouches

b)

air bladders

c)

whispy spores

d)

leafy thallus

17.

The largest brown algae in the ocean is

a)

rockweed

b)

irish moss

c)

kelp

d)

sea lettuce

18.

A chemical in kelp called _______________ is used in food and medicine

a)

carageenan

b)

algin

c)

chlorophyll

d)

none of the above

19.

True or False: Red algae is the most commercially valuable?

a)

True

b)

False

20.

Red algae is classified in the phylum _______________________

a)

Chlorophyta

b)

Phaeophyta

c)

Rhodophyta

d)

None of the above

21.

True or False: Red algae can live in deeper water?

a)

True

b)

False

22.

What two important things do we get from red algae

a)

carrageenan

b)

agar

c)

algin

d)

chlorophyll

23.

True or False: Plants do not grow at beaches?

a)

True

b)

False

24.

Most plants are found on the sand ___________________ which are held in place by roots of plants.

a)

piles

b)

dunes

c)

grasslands

d)

marsh

25.

True or False: Plants do not have to adapt to live on the beach.

a)

True

b)

False

26.

True or False: Most beach plants are vascular plants

a)

True

b)

False

27.

_________________________ grow along sandy beaches in calm bays

a)

Trees

b)

marsh grasses

c)

algae fields

d)

rockweed

28.

The marsh grass with fluffy tassels is called

a)

Phragmites

b)

spartina

c)

cord grass

d)

eel grass

29.

True or False: Spartina can withstand changes in salinity and temperature.

a)

True

b)

False

30.

IN the shallow subtotal zones along the shore ________________________ grow.

a)

marsh grass

b)

sea grass

c)

spartina

d)

Phragmites.

31.

Turtle grass has underground stems called

a)

hold fast

b)

rhizomes

c)

prop roots

d)

dunes

32.

True or False: Sea Grass reproduces by spores

a)

True

b)

False

33.

True or False: Certain trees can grow in salt water.

a)

True

b)

False

34.

The roots of a mangrove tree are called

a)

prop roots

b)

hold roots

c)

holdfast

d)

thallus

35.

True or False: Mangrove trees are nurseries for young organisms.

a)

True

b)

False