Biology 106 Exam 1 Sample Questions. ANSWERS
L. King
Spring 2022
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NOTE: these are not comprehensive, i.e. they do not cover all of the material that will be
covered on the upcoming exam.
•
Study your notes thoroughly and look at the lecture topic review questions in Canvas.
•
The Canvas quizzes will also be good sources for review.
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Exam 1 will cover from evolution and phylogenetics up through Friday February 18,
wherever we end.)
True or False Sample Questions
1. The nuclear membrane is a synapomorphy of all eukaryotes. T
2. The earth originated 1 billion years ago. F
3. Both bacteria and archaea have peptidoglycan in their cell walls. F
4. In an angiosperm pollen grain, the generative cell guides the formation of the
pollen tube.
F
5. Toxic species of diatoms are responsible for red tides. F
Multiple Choice Sample Questions
6. Strolling in the Sonoran Desert, you come upon a Saguaro cactus. The large central
“trunks” of this cactus are covered with numerous smaller spines. The central stalks are
modified _________ used for water storage and spines are modified ______ used for
protection. (NOTE: we may not get to this material by Feb 18—if we do not, then
ignore this question.). UPDATE: WE COVERED THIS ON FRIDAY FEB 18
A. stems; leaves
B. stems; trichomes
C. petioles; leaf blades
D. leaf blades; trichomes
E. stems; fruits
7. Sites of leaf attachment on a stem are the
A. internodes
B. nodes
C. axillary buds
D. apical buds
E. blade
8. Which of the following is the male gametophyte in seed plants?
A. Sperm
D. Seed
B. Pollen grain
E. Male pine cone scale
C. Microspore
9. In the tree above, which of the following would be the most closely related?
D. 4 and 6
E. 5 and 7
A. 1 and 2
B. 1 and 3
C. 3 and 4
10. The evolutionary history of a group of organisms is its:
A. taxonomy.
B. classification.
C. phylogeny.
D. hierarchy.
E. lineage.
11. The main function of apical meristems in plants is (NOTE: we may not get to this by
Feb 18; if we do not, then ignore this question.). WE DID NOT GET TO THIS: THIS IS NOT
FOR EXAM 1
A. attracting pollinators
D. primary growth
B. absorbing ions
E. secondary growth
C. photosynthesis
12. Collenchyma, sclerenchyma, and parenchyma are all types of
A. vascular tissue
B. stems
C. roots
D. ground tissue
E. photosynthetic tissue
13. Agent Scully has found a new prokaryote. What line of evidence would support her
hypothesis that the organism is a cyanobacterium?
A.
B.
C.
D.
E.
It is able to fix nitrogen and produce oxygen.
It forms symbiotic associations with plant roots
It has membrane-bound nuclei.
She determines that it can cause botulism.
It lacks cell walls.
14. All protists are:
A. unicellular
B. eukaryotic
C. symbionts
D. monophyletic
E. mixotrophic
15. Evolution of the seed is an important event that allowed gymnosperms and
angiosperms to live on land. Another important, unique feature of both gymnosperms
and angiosperms that makes them able to reproduce in a dry environment is the
A.
B.
C.
D.
E.
antheridium
archegonium
dominant sporophyte life cycle
pollen grain
flower
16. Two important primary producers in aquatic ecosystems are
A.
B.
C.
D.
E.
the
the
the
the
the
ciliates and the kinetoplastids
diatoms and the dinoflagellates
dinoflagellates and the ciliates
euglenids and the ciliates
ciliates and the diatoms
17. Which of the following is true regarding the ciliates?
A. They use pseudopodia as feeding structures.
B. They typically have a micronucleus and macronucleus
C. They include the slime molds.
D. Most are autotrophs.
E. They include the organisms responsible for toxic red tides.
18. In alternation of generations, the male gametangium is the
A. mycelium
B. pollen grain
C. antheridium
D. archegonium
E. sporangium
19. Agent Scully is attempting to classify an unidentified protist. Microscopic
examination shows that it has membrane-bound sacs just beneath its plasma membrane.
This protist is likely a member of the
A. Excavata
D. Archaeplastida
B. Alveolata
E. Opisthokonta
C. Stramenopila
20. The plants
A. Phylum
B. Phylum
C. Phylum
D. Phylum
informally known as “liverworts” belong to:
Monilophyta
Hepatophyta
Bryophyta
Lycophyta
21. The closest living relatives of land plants are the ___________. One similarity
between land plants and these relatives is that they both___________.
A. green algae; possess lignin in their cell walls
B. green algae; contain chlorophylls a and b in their chloroplasts
C. green algae; contain peptidoglycan in their chloroplast membranes
D. euglenozoans; contain chlorophylls a and b in their chloroplasts
E. euglenozoans; store food as starch
Here are some examples of short answer/fill-ins from previous years:
FOR ANSWERTS TO THE FILL-INS, REFER TO YOUR NOTES AND LET ME KNOW IF YOU
HAVE ANY QUESTIONS.
22. The organisms responsible for first putting a significant amount of oxygen into the
atmosphere are the
____________________
23. (1 pt) Fill in the following: The cuticle of land plants prevents gas exchange, but the
presence of ______________ in leaves solves this issue.
24. (2 pts) Parenchyma tissue has different functions depending on its location in the
plant body.
A. What is the function of parenchyma tissue in leaves?_______________________
B. What is the function of parenchyma tissue in roots?________________________
25. CHOOSE ONE of the following questions to answer:
Briefly describe/explain the endosymbiotic theory for the evolution of the
mitochondrion. In your description, provide one line of evidence supporting this theory.
OR
Briefly describe/explain the leading theory for the evolution of the nuclear envelope
(nuclear membrane). In your description, provide one line of evidence supporting this
theory.
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