Bio 1407 Exam 2 Questions With Complete Solutions
A biologist uses a time machine to collect living material from
two different time periods. Sample A is 3 billion years old, and
sample B is 1.5 billion years old. How would these samples
differ? Correct Answers Eukaryotic organisms would be absent
from sample A
A birdhouse is nailed into a tree 6 feet up from the ground. If the
tree grows about 2 feet taller each year, how far from the ground
will the birdhouse be 25 years later? Correct Answers 6 feet
A botanist examines two plants. Plant A has large colorful
petals; plant B has extremely tiny white flowers. Which one is
most likely animal pollinated? Correct Answers Plant A
A bryologist (a scientist that studies mosses, and their allies)
gives a lecture to your biology class. In her lecture, she makes a
reference to fern reproduction. She says, "Fern spores germinate
into Correct Answers gametophytes, which are often heart-
shaped and have rhizoids that anchor the fern to the substrate
A chemist creates a compound that interferes with the
polymerization of N-acetylglucosamine. What effect is this
likely to have when applied to cultures of fungi? Correct
Answers the cell walls will be thin and weak
A common characteristic of choanoflagellates is Correct
Answers Funnel-shaped, contractile collar
,A friend who is not a biologist tells you that she grows irises
from iris roots. You explain to her that the
"root" she is planting is not a root, but instead is called a
rhizome. "Why?" she asked. You explain: Correct Answers "A
rhizome has nodes and internodes and is really a modified stem
that can exist underground."
A fruit-bearing dioecious flower would have Correct Answers
a gynoecium
A growing root comes into contact with a chemical that inhibits
the golgi bodies. Which of the following would be a probable
effect of this contact? Correct Answers The root would not be
slick enough to move through the soil easily.
A horsetail gametophyte looks like a lobed liverwort
gametophyte. What evidence in the horsetail sporophyte tells us
horsetails are not bryophytes? Correct Answers A horsetail
sporophyte has tracheids
A major distinguishing feature between monocot and eudicot
stems is the organization of the Correct Answers vascular
tissue.
A mass of hyphae in an ascomycete is commonly referred to as
a(n) Correct Answers mycelium
A new protist species is discovered with these characteristics:
contains phycoerythrin and phycocyanin, lacks flagella and
centrioles, photosynthesizes, haplodiplontic, and lives in coral
,reefs. What group does it likely belong to? Correct Answers
red algae (Rhodophyta).
A nonphotosynthetic plant sharing a mycorrhizal fungus with a
photosynthetic plant is best described as a(n) Correct Answers
epiparasite
A particular fungus lives on the bark of damaged spruce trees.
This fungus has heterokaryotic hyphae, which means Correct
Answers the nuclei of each compartment of the hyphae are
genetically distinct
A patient presents in an ER with severe stomach cramps and
diarrhea. She was recently swimming in unclean water. Which
protist would be the most likely cause of her symptoms?
Correct Answers Glardia
A plant that has the mutant form of the WEREWOLF gene
(wer) would be identifiable by Correct Answers the abundance
of microscopic hairs on the root.
A researcher brings a sample of dry soil to the lab, wets it,
provides ample amounts of fertilizer, and places the soil in a
container in a greenhouse. Which type of plant would be least
likely to emerge? Correct Answers liverwort
A stem that cannot increase in diameter is lacking what type of
tissue? Correct Answers vascular cambium
A symbiotic association between a fungus and a green alga or a
cyanobacterium is called a Correct Answers lichen
, A type of fungi that has been long useful for baking, brewing,
and wine making, and is now very important in genetic research
is. Correct Answers yeast
A waxy cuticle prevents desiccation. What is the cost of this
adaptation? Correct Answers hinders gas permeability and
could potentially slow water transport within the plant
Advances in molecular systematics show that whisk ferns and
horsetails are the closest living relatives of Correct Answers
ferns
After fertilization, the zygote continuously develops until an
embryonic plant is formed within the seed Correct Answers
False
After meiosis, the mature ascus of an ascomycete usually
contains Correct Answers eight haploid nuclei
After one rainy day, suddenly there are mushrooms all over the
lawn! What can explain their sudden appearance Correct
Answers the fungal mycelium been living underground and the
fruiting body formed rapidly
Alexander Fleming kept finding mold contamination that was
killing his bacterial cultures. This observation eventually lead to
the development of the antibiotic penicillin. Why would a
fungus produce a compound that is selectively toxic to bacteria?
Correct Answers Fungus compete with bacteria for resources
A biologist uses a time machine to collect living material from
two different time periods. Sample A is 3 billion years old, and
sample B is 1.5 billion years old. How would these samples
differ? Correct Answers Eukaryotic organisms would be absent
from sample A
A birdhouse is nailed into a tree 6 feet up from the ground. If the
tree grows about 2 feet taller each year, how far from the ground
will the birdhouse be 25 years later? Correct Answers 6 feet
A botanist examines two plants. Plant A has large colorful
petals; plant B has extremely tiny white flowers. Which one is
most likely animal pollinated? Correct Answers Plant A
A bryologist (a scientist that studies mosses, and their allies)
gives a lecture to your biology class. In her lecture, she makes a
reference to fern reproduction. She says, "Fern spores germinate
into Correct Answers gametophytes, which are often heart-
shaped and have rhizoids that anchor the fern to the substrate
A chemist creates a compound that interferes with the
polymerization of N-acetylglucosamine. What effect is this
likely to have when applied to cultures of fungi? Correct
Answers the cell walls will be thin and weak
A common characteristic of choanoflagellates is Correct
Answers Funnel-shaped, contractile collar
,A friend who is not a biologist tells you that she grows irises
from iris roots. You explain to her that the
"root" she is planting is not a root, but instead is called a
rhizome. "Why?" she asked. You explain: Correct Answers "A
rhizome has nodes and internodes and is really a modified stem
that can exist underground."
A fruit-bearing dioecious flower would have Correct Answers
a gynoecium
A growing root comes into contact with a chemical that inhibits
the golgi bodies. Which of the following would be a probable
effect of this contact? Correct Answers The root would not be
slick enough to move through the soil easily.
A horsetail gametophyte looks like a lobed liverwort
gametophyte. What evidence in the horsetail sporophyte tells us
horsetails are not bryophytes? Correct Answers A horsetail
sporophyte has tracheids
A major distinguishing feature between monocot and eudicot
stems is the organization of the Correct Answers vascular
tissue.
A mass of hyphae in an ascomycete is commonly referred to as
a(n) Correct Answers mycelium
A new protist species is discovered with these characteristics:
contains phycoerythrin and phycocyanin, lacks flagella and
centrioles, photosynthesizes, haplodiplontic, and lives in coral
,reefs. What group does it likely belong to? Correct Answers
red algae (Rhodophyta).
A nonphotosynthetic plant sharing a mycorrhizal fungus with a
photosynthetic plant is best described as a(n) Correct Answers
epiparasite
A particular fungus lives on the bark of damaged spruce trees.
This fungus has heterokaryotic hyphae, which means Correct
Answers the nuclei of each compartment of the hyphae are
genetically distinct
A patient presents in an ER with severe stomach cramps and
diarrhea. She was recently swimming in unclean water. Which
protist would be the most likely cause of her symptoms?
Correct Answers Glardia
A plant that has the mutant form of the WEREWOLF gene
(wer) would be identifiable by Correct Answers the abundance
of microscopic hairs on the root.
A researcher brings a sample of dry soil to the lab, wets it,
provides ample amounts of fertilizer, and places the soil in a
container in a greenhouse. Which type of plant would be least
likely to emerge? Correct Answers liverwort
A stem that cannot increase in diameter is lacking what type of
tissue? Correct Answers vascular cambium
A symbiotic association between a fungus and a green alga or a
cyanobacterium is called a Correct Answers lichen
, A type of fungi that has been long useful for baking, brewing,
and wine making, and is now very important in genetic research
is. Correct Answers yeast
A waxy cuticle prevents desiccation. What is the cost of this
adaptation? Correct Answers hinders gas permeability and
could potentially slow water transport within the plant
Advances in molecular systematics show that whisk ferns and
horsetails are the closest living relatives of Correct Answers
ferns
After fertilization, the zygote continuously develops until an
embryonic plant is formed within the seed Correct Answers
False
After meiosis, the mature ascus of an ascomycete usually
contains Correct Answers eight haploid nuclei
After one rainy day, suddenly there are mushrooms all over the
lawn! What can explain their sudden appearance Correct
Answers the fungal mycelium been living underground and the
fruiting body formed rapidly
Alexander Fleming kept finding mold contamination that was
killing his bacterial cultures. This observation eventually lead to
the development of the antibiotic penicillin. Why would a
fungus produce a compound that is selectively toxic to bacteria?
Correct Answers Fungus compete with bacteria for resources
