BIOL 1108 Final Exam | UPDATED Questions with 100%
Verified Answers
Q1: A woman is growing an African violet on her windowsill. After several weeks, she notices that the plant
is leaning toward the right, in the direction of the window. In the stem(s) of her African violet, where would
you expect to find the most auxin? A. on the left (shaded) sides of the stems, facing away from the window
B. on the right (lit) sides of the stems, facing toward the window C. Auxin will be equally distributed between
the right and left sides of the stems. D. Gibberellin acid not auxin will be in the stems of the African violet
A: A. on the left (shaded) sides of the stems, facing away from the window
Q2: In your vegetable garden you a growing yams. Yams are modified root tissue from the plant. What is the
function of the yam for the plant? A. It stores water for the plant in times of drought. B. It stores sugar for the
plant. C. It provides greater surface area for water absorption. D. It provides greater surface area for the
growth of additional root meristems.
A: B. It stores sugar for the plant.
Q3: You purchase two identical houseplants and place them side by side on your windowsill. You water both
plants equally. One plant, plant a, you leave alone. On the other plant, plant b, you pinch off the top of the
growing stem, effectively removing the apical meristem. Which of the following would you expect to occur?
A. Both plants will look exactly the same except that plant b will be shorter. B. Plant a will be much bushier,
with growth of many lateral branches. C. Plant b will have larger leaves to make up for the loss in
photosynthetic tissues from reduced growth. D. Plant b will be much bushier, with growth of many lateral
branches. E. The level of auxin in plant b will be higher than in plant a.
A: D. Plant b will be much bushier, with growth of many lateral branches.
Q4: What is an advantage of root meristems originating at the pericycle, rather than at the other root
structures (e.g., the epidermis)? A. New roots form only at the tips of preexisting roots, reaching deepwater
sources B. New roots are directly connected to the xylem and phloem of preexisting roots. C. New roots
form outside the Casparian strip and can absorb more nutrients. D. New roots will only sprout from on
preexisting roots.
A: B. New roots are directly connected to the xylem and phloem of preexisting roots.
Q5: Vascular cambium is one of two lateral meristems, the other being cork cambium. A plant grow sin
diameter primarily through divisions of the vascular cambium. If you pull a small piece of bark off a tree, and
then look at its inside surface, what tissue are you looking at (ignore any remaining cells of vascular
cambium that may be left)? A. cork cambium B. cork C. xylem D. phloem
A: D. phloem
,Q6: Imagine you are a molecule of water in the rhizosphere of an oak tree. You enter the root and follow a
path all the way to a stomata of a leaf and transpire out of the leaf. For all of this, you only enter a single
living cell. What is that cell?
A: Tracheid cell
Q7: A researcher comes across a plant that has been infected by a pathogen. As a result of the infection, the
plant has undergone a systemic acquired resistance (SAR) response and has also generated several siRNAs.
Based on this response, what type of pathogen most likely infected the plant? A. a bacterium b. a virus c. a
fungi d. an oomycete e. a parasitic plant
A: B. a virus
Q8: You may have heard that monarch butterflies (and their caterpillars) are "poisonous" to many predators.
What makes these insects so toxic? Read your answer choices carefully! a. Monarch caterpillars produce
cardenolides in their digestive tracts. b. Monarch caterpillars use cardenolides from milkweed to synthesize
toxin. c. Monarch caterpillars ingest milkweed latex which "chokes" their predators. d. Monarch caterpillars
store cardenolides from milkweeds. e. Monarch caterpillars secrete latex from their bodies.
A: d. Monarch caterpillars store cardenolides from milkweeds.
Q9: Recall that the bullhorn acacia forms a symbiosis with P. ferruginea ants. A researcher takes an acacia
seed and plants it in an area without P. ferruginea. What will happen to this acacia plant? a. It will
immediately form a symbiotic relationship with ants native to the area. b. It will begin producing alkaloids
and terpenes to deter herbivores. c. It will begin to produce hairs on its leaves to deter herbivores. d. Without
P. ferruginea, the plant won't have any defenses and will be eaten by herbivores.
A: d. Without P. ferruginea, the plant won't have any defenses and will be eaten by
herbivores.
Q10: A seed from a yew tree germinates on the forest floor. During the first few months of its life, the sapling
dedicates most of its resources to increasing in height rather than producing the defensive compound taxol.
What is this allocation of resources an example of? a. a symbiosis b. a tradeoff c. a constitutive defense d.
an inducible defense e. a basal response
A: b. a tradeoff
Q11: Which of the following proteins allow a plant to mount an immune response against a specific
pathogen? Select all the correct choices. a. flagellin receptors on the plasma membrane b. avirulence (A VR)
proteins formed by pathogens. c. resistance (R) proteins in the plant cytoplasm d. chitin receptors on the
plasma membrane
A: b. avirulence (A VR) proteins formed by pathogens.
and
c. resistance (R) proteins in the plant cytoplasm
, Q12: Which taxonomic group of land plants still in existence today was the dominant group of land plants
when the angiosperms began their rapid increase in speciation and distribution? a. bryophytes b. lycophytes
c. ferns and horsetails d. gymnosperms
A: d. gymnosperms
Q13: Which of the following correctly describes the "fern" we see when we walk in the woods? a. a diploid
sporophyte b. a haploid sporophyte c. a diploid gametophyte d. a haploid gametophyte
A: a. a diploid sporophyte
Q14: The multicellular gametophytes or ferns are haploid. a. True b. False
A: a. True
Q15: Which of the four major groups of gymnosperms is limited to a single species? a. Ginkgo b. Cycads c.
Conifers D. Gnetophytes
A: a. Ginkgo
Q16: Ginkgo trees are popular in urban areas because they thrive under varied conditions and have
attractive leaves, especially in the fall. The only drawback is that the fleshy seeds have a disagreeable odor.
Consequently, ginkgo trees that produce pollen are preferred over those that produce the fleshy, smelly
seeds. Therefore, which of the following statements is true? a. Ginkgo trees with male gametophytes from
which male gametes are released are preferred over trees with female gametophytes b. Ginkgo trees that
release airborne female gametophytes are preferred over trees that release male gametophytes c. Ginkgo
trees that release male gametophytes are preferred over trees that are pollinated.
A: c. Ginkgo trees that release male gametophytes are preferred over trees that are
pollinated.
Q17: Many dinosaur movies depict huge treelike plants growing out of swamps. To what group would these
"trees" likely belong? a. cycads and lycophytes b. lycophytes and mosses c. mosses and ferns d. lycophytes
and angiosperms
A: a. cycads and lycophytes
Q18: Which of the following are characteristics that all bryophytes share? Select all correct choices and only
the correct ones. a. a thallus b. stomata c. sporophyte generation d. gametophyte generation e.
waterdependent sperm f. desiccation resistance
A: f. desiccation resistance
c. sporophyte generation
e. waterdependent sperm
d. gametophyte generation
Verified Answers
Q1: A woman is growing an African violet on her windowsill. After several weeks, she notices that the plant
is leaning toward the right, in the direction of the window. In the stem(s) of her African violet, where would
you expect to find the most auxin? A. on the left (shaded) sides of the stems, facing away from the window
B. on the right (lit) sides of the stems, facing toward the window C. Auxin will be equally distributed between
the right and left sides of the stems. D. Gibberellin acid not auxin will be in the stems of the African violet
A: A. on the left (shaded) sides of the stems, facing away from the window
Q2: In your vegetable garden you a growing yams. Yams are modified root tissue from the plant. What is the
function of the yam for the plant? A. It stores water for the plant in times of drought. B. It stores sugar for the
plant. C. It provides greater surface area for water absorption. D. It provides greater surface area for the
growth of additional root meristems.
A: B. It stores sugar for the plant.
Q3: You purchase two identical houseplants and place them side by side on your windowsill. You water both
plants equally. One plant, plant a, you leave alone. On the other plant, plant b, you pinch off the top of the
growing stem, effectively removing the apical meristem. Which of the following would you expect to occur?
A. Both plants will look exactly the same except that plant b will be shorter. B. Plant a will be much bushier,
with growth of many lateral branches. C. Plant b will have larger leaves to make up for the loss in
photosynthetic tissues from reduced growth. D. Plant b will be much bushier, with growth of many lateral
branches. E. The level of auxin in plant b will be higher than in plant a.
A: D. Plant b will be much bushier, with growth of many lateral branches.
Q4: What is an advantage of root meristems originating at the pericycle, rather than at the other root
structures (e.g., the epidermis)? A. New roots form only at the tips of preexisting roots, reaching deepwater
sources B. New roots are directly connected to the xylem and phloem of preexisting roots. C. New roots
form outside the Casparian strip and can absorb more nutrients. D. New roots will only sprout from on
preexisting roots.
A: B. New roots are directly connected to the xylem and phloem of preexisting roots.
Q5: Vascular cambium is one of two lateral meristems, the other being cork cambium. A plant grow sin
diameter primarily through divisions of the vascular cambium. If you pull a small piece of bark off a tree, and
then look at its inside surface, what tissue are you looking at (ignore any remaining cells of vascular
cambium that may be left)? A. cork cambium B. cork C. xylem D. phloem
A: D. phloem
,Q6: Imagine you are a molecule of water in the rhizosphere of an oak tree. You enter the root and follow a
path all the way to a stomata of a leaf and transpire out of the leaf. For all of this, you only enter a single
living cell. What is that cell?
A: Tracheid cell
Q7: A researcher comes across a plant that has been infected by a pathogen. As a result of the infection, the
plant has undergone a systemic acquired resistance (SAR) response and has also generated several siRNAs.
Based on this response, what type of pathogen most likely infected the plant? A. a bacterium b. a virus c. a
fungi d. an oomycete e. a parasitic plant
A: B. a virus
Q8: You may have heard that monarch butterflies (and their caterpillars) are "poisonous" to many predators.
What makes these insects so toxic? Read your answer choices carefully! a. Monarch caterpillars produce
cardenolides in their digestive tracts. b. Monarch caterpillars use cardenolides from milkweed to synthesize
toxin. c. Monarch caterpillars ingest milkweed latex which "chokes" their predators. d. Monarch caterpillars
store cardenolides from milkweeds. e. Monarch caterpillars secrete latex from their bodies.
A: d. Monarch caterpillars store cardenolides from milkweeds.
Q9: Recall that the bullhorn acacia forms a symbiosis with P. ferruginea ants. A researcher takes an acacia
seed and plants it in an area without P. ferruginea. What will happen to this acacia plant? a. It will
immediately form a symbiotic relationship with ants native to the area. b. It will begin producing alkaloids
and terpenes to deter herbivores. c. It will begin to produce hairs on its leaves to deter herbivores. d. Without
P. ferruginea, the plant won't have any defenses and will be eaten by herbivores.
A: d. Without P. ferruginea, the plant won't have any defenses and will be eaten by
herbivores.
Q10: A seed from a yew tree germinates on the forest floor. During the first few months of its life, the sapling
dedicates most of its resources to increasing in height rather than producing the defensive compound taxol.
What is this allocation of resources an example of? a. a symbiosis b. a tradeoff c. a constitutive defense d.
an inducible defense e. a basal response
A: b. a tradeoff
Q11: Which of the following proteins allow a plant to mount an immune response against a specific
pathogen? Select all the correct choices. a. flagellin receptors on the plasma membrane b. avirulence (A VR)
proteins formed by pathogens. c. resistance (R) proteins in the plant cytoplasm d. chitin receptors on the
plasma membrane
A: b. avirulence (A VR) proteins formed by pathogens.
and
c. resistance (R) proteins in the plant cytoplasm
, Q12: Which taxonomic group of land plants still in existence today was the dominant group of land plants
when the angiosperms began their rapid increase in speciation and distribution? a. bryophytes b. lycophytes
c. ferns and horsetails d. gymnosperms
A: d. gymnosperms
Q13: Which of the following correctly describes the "fern" we see when we walk in the woods? a. a diploid
sporophyte b. a haploid sporophyte c. a diploid gametophyte d. a haploid gametophyte
A: a. a diploid sporophyte
Q14: The multicellular gametophytes or ferns are haploid. a. True b. False
A: a. True
Q15: Which of the four major groups of gymnosperms is limited to a single species? a. Ginkgo b. Cycads c.
Conifers D. Gnetophytes
A: a. Ginkgo
Q16: Ginkgo trees are popular in urban areas because they thrive under varied conditions and have
attractive leaves, especially in the fall. The only drawback is that the fleshy seeds have a disagreeable odor.
Consequently, ginkgo trees that produce pollen are preferred over those that produce the fleshy, smelly
seeds. Therefore, which of the following statements is true? a. Ginkgo trees with male gametophytes from
which male gametes are released are preferred over trees with female gametophytes b. Ginkgo trees that
release airborne female gametophytes are preferred over trees that release male gametophytes c. Ginkgo
trees that release male gametophytes are preferred over trees that are pollinated.
A: c. Ginkgo trees that release male gametophytes are preferred over trees that are
pollinated.
Q17: Many dinosaur movies depict huge treelike plants growing out of swamps. To what group would these
"trees" likely belong? a. cycads and lycophytes b. lycophytes and mosses c. mosses and ferns d. lycophytes
and angiosperms
A: a. cycads and lycophytes
Q18: Which of the following are characteristics that all bryophytes share? Select all correct choices and only
the correct ones. a. a thallus b. stomata c. sporophyte generation d. gametophyte generation e.
waterdependent sperm f. desiccation resistance
A: f. desiccation resistance
c. sporophyte generation
e. waterdependent sperm
d. gametophyte generation
