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BIO 1108 UConn Final Exam 2025 – Principles of Biology II
Comprehensive Study Guide, Practice Test, and Answer Key
Ace your BIO 1108 UConn Final Exam with this updated 2025 Principles of Biology II study
guide. Includes practice questions, review notes, and expert-verified answers covering
evolution, ecology, genetics, and organismal biology. Perfect for University of Connecticut
students preparing for their final.
BIO 1108 UConn final exam,
BIO 1108 Principles of Biology II,
BIO 1108 UConn study guide,
UConn BIO 1108 exam answers,
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 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.
A lichen is an association typically developed by: - ANSWER-
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
,2|Page
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.
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
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
Before seed plants evolved, plants with dominant sporophytes composed a monophyletic group. -
ANSWER-
Plants from which of the following groups died off as angiosperms diversified and became more
abundant? Select all correct choices. - ANSWER-cycads
ginkos
, 3|Page
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
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
The ability to develop two types of sporangia was: - ANSWER-
Which of the following correctly describes the "fern" we see when walking in the woods? - ANSWER-
diploid sporophyte
What is the primary reason that fungi are important in the carbon cycle? - ANSWER-fungi are able to
reach incredibly large sizes. their high ratio of surface area to volume allows them to decompose large
amounts of dead/decaying material, thereby returning carbon to the atmosphere
One major innovation in the evolution of land plants was the ability of the sporophyte to branch. This
may have provided an immediate advantage because: - ANSWER-
What would happen to a resulting seed of an angiosperm ovule was fertilized by a pollen grain that had
only one sperm? - ANSWER-Nothing. The ovule would not be fertilized and the endosperm would not
develop and thus the embryo would not have the resources it needs to develop.
BIO 1108 UConn Final Exam 2025 – Principles of Biology II
Comprehensive Study Guide, Practice Test, and Answer Key
Ace your BIO 1108 UConn Final Exam with this updated 2025 Principles of Biology II study
guide. Includes practice questions, review notes, and expert-verified answers covering
evolution, ecology, genetics, and organismal biology. Perfect for University of Connecticut
students preparing for their final.
BIO 1108 UConn final exam,
BIO 1108 Principles of Biology II,
BIO 1108 UConn study guide,
UConn BIO 1108 exam answers,
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 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.
A lichen is an association typically developed by: - ANSWER-
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
,2|Page
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.
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
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
Before seed plants evolved, plants with dominant sporophytes composed a monophyletic group. -
ANSWER-
Plants from which of the following groups died off as angiosperms diversified and became more
abundant? Select all correct choices. - ANSWER-cycads
ginkos
, 3|Page
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
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
The ability to develop two types of sporangia was: - ANSWER-
Which of the following correctly describes the "fern" we see when walking in the woods? - ANSWER-
diploid sporophyte
What is the primary reason that fungi are important in the carbon cycle? - ANSWER-fungi are able to
reach incredibly large sizes. their high ratio of surface area to volume allows them to decompose large
amounts of dead/decaying material, thereby returning carbon to the atmosphere
One major innovation in the evolution of land plants was the ability of the sporophyte to branch. This
may have provided an immediate advantage because: - ANSWER-
What would happen to a resulting seed of an angiosperm ovule was fertilized by a pollen grain that had
only one sperm? - ANSWER-Nothing. The ovule would not be fertilized and the endosperm would not
develop and thus the embryo would not have the resources it needs to develop.
