Protists
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Printed: September 4, 2015
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C HAPTER
Chapter 1. Protists
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Protists
Lesson 9.1: True or False
Name___________________ Class______________ Date________
Write true if the statement is true or false if the statement is false.
1. ________ Of all eukaryotes, protists are the simplest.
2. ________ The Protist Kingdom is sometimes called the “trash can” kingdom because it includes mainly
decomposers.
3. ________ The total number of living species of protists is unknown.
4. ________ The cells of all protists contain membrane-bound organelles called chloroplasts.
5. ________ Most protists have very simple life cycles.
6. ________ Protists called protozoa are probably ancestors of plants.
7. ________ Human diseases caused by protists include giardiasis and malaria.
Lesson 9.1: Critical Reading
Name___________________ Class______________ Date________
Read this passage based on the text and answer the questions that follow.
Fungus-like protists include slime molds and water molds. They exist as individual cells or as many cells that form
a blob-like colony. They are probably ancestors of fungi. Like fungi, many fungus-like protists are decomposers.
They absorb nutrients from dead logs, compost, and other organic remains.
Slime molds are commonly found on rotting organic matter such as compost. Swarms of cells move very slowly
over the surface. They digest and absorb nutrients as they go. One type of slime mold is called “dog vomit” mold
because it resembles dog vomit.
Water molds are commonly found in moist soil and surface water. Many water molds are plant pathogens or fish
parasites. One type of water mold infiltrates potatoes and makes them unfit to eat.
Questions
1. Relate molds to fungi.
2. Describe slime molds, where they are typically found, and how they get nutrients.
3. What are water molds? What relationships do they have with other organisms?
Lesson 9.1: Multiple Choice
Name___________________ Class______________ Date________
Circle the letter of the correct choice.
1. Which trait characterizes protists but not prokaryotes?
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a.
b.
c.
d.
cell nucleus
cell membrane
cell wall
all of the above
2. Which statement about protists is false?
a.
b.
c.
d.
They are thought be the oldest eukaryotes
They probably evolved from prokaryotes
Most of them are single celled
Some of them have specialized cells
3. What is a benefit of sexual reproduction over asexual reproduction?
a.
b.
c.
d.
Sexual reproduction can occur very quickly
Sexual reproduction allows rapid population growth
Sexual reproduction increases genetic variation
two of the above
4. How do protozoa resemble animals?
a.
b.
c.
d.
They are producers
Most of them can move
All of them are multicellular
Some of them can grow very large
5. Examples of algae include
a.
b.
c.
d.
diatoms
seaweed
kelp
all of the above
6. Which structures do algae share with plants?
a.
b.
c.
d.
roots
stems
leaves
none of the above
7. Most protist diseases in humans are caused by
a.
b.
c.
d.
water molds
algae
protozoa
slime molds
Lesson 9.1: Matching
Name___________________ Class______________ Date________
Match each definition with the correct term.
Definitions
1. ________ type of fungus-like protist commonly found on rotting organic matter
2. ________ common name for an animal-like protist
3. ________ temporary extension of the cytoplasm that a protozoan uses to move
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4.
5.
6.
7.
Chapter 1. Protists
________ all the phases an organism goes through in its life time
________ type of fungus-like protist commonly found in surface water
________ common name for a plant-like protist
________ appendage for movement that is found in protozoa and most prokaryotes
Terms
a.
b.
c.
d.
e.
f.
g.
flagellum
alga
life cycle
water mold
pseudopod
protozoan
slime mold
Lesson 9.1: Fill in the Blank
Name___________________ Class______________ Date________
Fill in the blank with the appropriate term.
1.
2.
3.
4.
5.
6.
7.
The Protist Kingdom is in the ___________________ Domain.
Algae that consist of single cells are called ___________________ .
Seaweed is an example of multicellular___________________ .
Any fungus-like protist is commonly called a(n) ___________________ .
___________________ are short, hair-like projections from protozoa that enable them to move.
Algae contain organelles called ___________________ , which allow them to make food by photosynthesis.
Protozoa get food by eating other organisms, so they are classified as ___________________ .
Lesson 9.1: Critical Writing
Name___________________ Class______________ Date________
Thoroughly answer the question below. Use appropriate academic vocabulary and clear and complete sentences.
Compare and contrast protozoa and algae.
3