Download Introduction to Protists - CK

Introduction to Protists
Say Thanks to the Authors
Click http://www.ck12.org/saythanks
(No sign in required)
To access a customizable version of this book, as well as other
interactive content, visit www.ck12.org
CK-12 Foundation is a non-profit organization with a mission to
reduce the cost of textbook materials for the K-12 market both
in the U.S. and worldwide. Using an open-content, web-based
collaborative model termed the FlexBook®, CK-12 intends to
pioneer the generation and distribution of high-quality educational
content that will serve both as core text as well as provide an
adaptive environment for learning, powered through the FlexBook
Platform®.
Copyright © 2015 CK-12 Foundation, www.ck12.org
The names “CK-12” and “CK12” and associated logos and the
terms “FlexBook®” and “FlexBook Platform®” (collectively
“CK-12 Marks”) are trademarks and service marks of CK-12
Foundation and are protected by federal, state, and international
laws.
Any form of reproduction of this book in any format or medium,
in whole or in sections must include the referral attribution link
http://www.ck12.org/saythanks (placed in a visible location) in
addition to the following terms.
Except as otherwise noted, all CK-12 Content (including CK-12
Curriculum Material) is made available to Users in accordance
with the Creative Commons Attribution-Non-Commercial 3.0
Unported (CC BY-NC 3.0) License (http://creativecommons.org/
licenses/by-nc/3.0/), as amended and updated by Creative Commons from time to time (the “CC License”), which is incorporated
herein by this reference.
Complete terms can be found at http://www.ck12.org/terms.
Printed: January 27, 2015
www.ck12.org
C HAPTER
Chapter 1. Introduction to Protists
1
Introduction to Protists
Lesson Quiz
Name___________________ Class______________ Date________
Multiple Choice
Circle the letter of the correct choice.
1. Protists are classified as
a.
b.
c.
d.
prokaryotes.
eukaryotes.
fungi.
b and c.
2. All of the following evidence supports the endosymbiotic theory except:
a.
b.
c.
d.
mitochondria and chloroplasts have no DNA, just like bacteria have no DNA.
mitochondria and chloroplasts have circular DNA similar to bacterial circular DNA.
mitochondrial and chloroplasts are bounded by membranes similar to bacterial membranes.
reproduction by binary fission is common to bacteria, mitochondria, and chloroplasts.
3. According to the endosymbiotic theory, chloroplasts evolved from
a.
b.
c.
d.
aerobic bacteria engulfed by fungi.
a eukaryotic cell that lost its nucleus.
cyanobacteria that were engulfed by larger prokaryotes.
cyanobacteria that were engulfed by fungi.
4. Protists are best defined as
a.
b.
c.
d.
unicellular bacteria.
multicellular fungi.
all organisms that are heterotrophs.
simple eukaryotes that are neither plants, animals, nor fungi.
5. Environments where protists live include
a.
b.
c.
d.
marshes.
damp soil.
oceans.
all of the above.
6. Protists can use which of the following appendages for motility?
a.
b.
c.
d.
cilia
flagella
pseudopods
all of the above
7. The protist Tetrahymena thermophila uses ________ for motility.
a. cilia
b. flagella
1
www.ck12.org
c. muscles
d. centrifugal force
8. Many protists can reproduce by
a.
b.
c.
d.
asexual reproduction only.
sexual reproduction only.
asexual or sexual reproduction.
none of the above
9. The protist Spirogyra is
a.
b.
c.
d.
a fungus.
a protozoan.
an algae.
a water mold.
10. One round of binary fission produces ________ from a single haploid cell.
a.
b.
c.
d.
two diploid cells
two haploid cells
one diploid cell
two haploid cells and two diploid cells
11. In protists, spores are produced
a.
b.
c.
d.
to help the organism survive in unfavorable environmental conditions.
to help the protist switch to being a prokaryote.
to engulf amoeba.
only in the summer, when days are long.
12. When a diploid zygote completes meiosis, ________ is (are) produced
a.
b.
c.
d.
two diploid cells
two haploid cells
four haploid cells
one diploid cell
True or False
Write true if the statement is true or false if the statement is false.
_______ 13. Mitochondria likely evolved from aerobic bacteria that were engulfed by a larger prokaryotic cell.
_______ 14. Mitochondria, but not chloroplasts, contain DNA.
_______ 15. Protists cannot survive in water.
_______ 16. A pseudopodia is a long, whip-like extension used by some protists as a reproductive cell.
_______ 17. Spirogyra is an animal-like protist.
Fill in the Blanks
Fill in the blank with the term that best completes the sentence.
18. The fusion of two Spirogyra spores to form a diploid zygote is an example of ____________.
19. Absorptive protists get nutrition by ____________.
20. ____________ protists use light energy, water, and carbon dioxide to make food.
21. ____________ bacteria use oxygen for cellular respiration.
22. Kingdom ____________ contains the protists.
23. Scientists think that the first eukaryotes to evolve were the ____________.
2
www.ck12.org
Chapter 1. Introduction to Protists
24. The ____________ theory explains how eukaryotes evolved from prokaryotes.
25. Nuclear membranes surround a protist’s ____________.
Short Answer
Answer each question in the space provided.
26. How does the ability to produce spores benefit Spirogyra?
27. How do ingestive protists obtain nutrients?
3