BIO 1108 UConn Final Exam || LATEST 2025/ 2026
ACTUAL EXAM WITH COMPLETE QUESTIONS AND
CORRECT DETAILED ANSWERS WITH RATIONALES
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When a coyote tobacco plant releases volatile signals in
response to M. sexta caterpillars, this is an example of
_______________. The presence of hairs on the leaf of a
milkweed plant is an example of ______________. -
ANSWER-an inducible defense; a constitutive defense
The majority of an individual fungus lives "in" its food
source. What characteristics of the fungal growth form
make this a necessity? - ANSWER-Fungi have a high ratio
of surface area to volume and are highly susceptible to
dessication.
Vascular cambium is one of two lateral meristems, the
other being cork cambium. A plant grows in 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)? -
ANSWER-phloem
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Which of the following plant hormones promotes
elongation of either the stems or roots in vascular plants? -
ANSWER-auxin
gibberellic acid
abscisic acid
A researcher isolates a species of fungus that only
reproduces sexually. He introduces individual fungi, all of
the same mating type (e.g., with the same mating type
alleles) into a petri dish. What do you expect will happen
with the fungi in this dish? - ANSWER-no spores will be
formed by fungi in the petri dish
Plants from which of the following groups died off as
angiosperms diversified and became more abundant?
Select all correct choices. - ANSWER-cycads
ginkos
A plant's fitness is directly related to its ability to deter
predators; the more it invests in defenses, the higher its
fitness. - ANSWER-false
What are advantages of root meristems originating at the
pericycle, rather than at other root structures (e.g., the
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epidermis)? - ANSWER-New roots are directly connected
to the xylem and phloem of pre-existing roots.
New roots can sprout from any location (i.e., not just
nodes) on pre-existing roots.
One of the reasons that so many farmers spray pesticides
on their crops is to decrease the amount of energy the
crops need to invest in the production of hairs on leaves to
deter insect herbivores. - ANSWER-false
You would like to cut down a tree in your backyard, but
you have no ax or chainsaw. Instead, you cut around the
trunk of the tree with a pocketknife and peel off the "bark"
in a three-inch thick strip. You are confident that this action
will kill the tree. Are you correct? - ANSWER-B) Yes,
because the phloem has been disrupted and sugar
transport will no longer occur.
You may have heard that monarch butterflies (and their
caterpillars) are "poisonous" to many predators. What
makes these insects so toxic? - ANSWER-Monarch
caterpillars store cardenolides from milkweeds
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Recall that the phloem sap of vascular plants moves
through the phloem as a result of mass flow. How are
nutrients transported through fungi? - ANSWER-(1)
saprobes decompose dead organic matter;
(2) parasites feed on living hosts
(3) mutualists live in symbiotic unions with other living
organisms. Saprophytic fungi
All bryophytes are relatively small. Which of the following
is thought to be one of the main limitations responsible for
this feature? - ANSWER-The male gametes of these land
plants are distributed through the water.
Which of the following statements is true regarding the
fruits produced by angiosperms? Select all correct
choices. - ANSWER-Fruits ripen in response to ethylene
and fruits are typically derived from the wall of the ovary
Which one of the following is a characteristic of complex
multicellular organisms, but not simple multicellular
organisms? - ANSWER-the functional specialization of
subsets of cells in the organisms
Where did Homo sapiens evolve? - ANSWER-East africa