Biology 122 mini exam 2 Hilbun UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Mechanical - CORRECT ANSWER - The dense hairs that cover the leaves of milkweed
plants are an example of what type of defense?
mechanical
chemical
inducible
phenolic
mechanical
Terpenes - CORRECT ANSWER - Which of the following is not a mechanical defense
employed by plants?
spines
thorns
silica plates
terpenes
hairs
spines
Alkaloids - CORRECT ANSWER - Nitrogen-bearing compounds that affect animal
nervous systems and are often biter tasting belong to which class of compounds?
phenols
latex
alkaloids
terpenoids
proteins
,Alkaloids are considered "expensive" defense compounds to produce because they"
contain a lot of carbon, which is costly for plants to concentrate.
vaporize readily, so they constantly have to be synthesized.
contain proteins, which are very costly for a plant to produce.
contain nitrogen, an essential and often limiting element plants need.
often function in very small concentrations - CORRECT ANSWER - Contain nitrogen, a
essential and often limiting element plants need.
What group of land plants first appeared in the fossil record most recently?
horsetails
gymnosperms
angiosperms
ferns - CORRECT ANSWER - Angiosperms
As the number of angiosperm species rose, what happened to the number of species of most
other groups of land plants?
They increased.
They stayed roughly the same.
They decreased. - CORRECT ANSWER - They decreased
Angiosperms possess many adaptations. Which of the following statements is NOT true of
angiosperms relative to other groups of plants?
Angiosperms can support greater rates of photosynthesis and transpiration than other groups of
plants.
Angiosperms have xylem vessels.
Angiosperms increased the total plant diversity supported by terrestrial ecosystems.
Angiosperms have much higher rates of CO2 uptake than other groups of plants.
Angiosperms rely entirely on tracheid xylem. - CORRECT ANSWER - Angiosperms rely
entirely on tracheid xylem
, Without the higher rates of transpiration exhibited by angiosperms, many tropical regions would?
have higher temperatures and higher rainfall.
have lower temperatures and lower rainfall.
have lower temperatures and higher rainfall.
have higher temperatures and lower rainfall.
be deserts. - CORRECT ANSWER - Higher temperatures & lower rainfall
Which of the following plants are bryophytes?
Mosses
Angiosperms
Horsetails
Ferns - CORRECT ANSWER - Mosses
In mosses, the green, leafy portion represents which generation in the alternation of generations?
diploid gametophyte
diploid sporophyte
haploid gametophyte
haploid spore
haploid sporophyte - CORRECT ANSWER - Haploid gametophyte
Plants that grow on other plants for structural support, but do not consume nutrients or energy
from them, are called?
ycophytes.
tracheophytes.
parasites.
photophytes.
epiphytes. - CORRECT ANSWER - Epiphytes
ACTUAL Exam Questions and CORRECT
Answers
Mechanical - CORRECT ANSWER - The dense hairs that cover the leaves of milkweed
plants are an example of what type of defense?
mechanical
chemical
inducible
phenolic
mechanical
Terpenes - CORRECT ANSWER - Which of the following is not a mechanical defense
employed by plants?
spines
thorns
silica plates
terpenes
hairs
spines
Alkaloids - CORRECT ANSWER - Nitrogen-bearing compounds that affect animal
nervous systems and are often biter tasting belong to which class of compounds?
phenols
latex
alkaloids
terpenoids
proteins
,Alkaloids are considered "expensive" defense compounds to produce because they"
contain a lot of carbon, which is costly for plants to concentrate.
vaporize readily, so they constantly have to be synthesized.
contain proteins, which are very costly for a plant to produce.
contain nitrogen, an essential and often limiting element plants need.
often function in very small concentrations - CORRECT ANSWER - Contain nitrogen, a
essential and often limiting element plants need.
What group of land plants first appeared in the fossil record most recently?
horsetails
gymnosperms
angiosperms
ferns - CORRECT ANSWER - Angiosperms
As the number of angiosperm species rose, what happened to the number of species of most
other groups of land plants?
They increased.
They stayed roughly the same.
They decreased. - CORRECT ANSWER - They decreased
Angiosperms possess many adaptations. Which of the following statements is NOT true of
angiosperms relative to other groups of plants?
Angiosperms can support greater rates of photosynthesis and transpiration than other groups of
plants.
Angiosperms have xylem vessels.
Angiosperms increased the total plant diversity supported by terrestrial ecosystems.
Angiosperms have much higher rates of CO2 uptake than other groups of plants.
Angiosperms rely entirely on tracheid xylem. - CORRECT ANSWER - Angiosperms rely
entirely on tracheid xylem
, Without the higher rates of transpiration exhibited by angiosperms, many tropical regions would?
have higher temperatures and higher rainfall.
have lower temperatures and lower rainfall.
have lower temperatures and higher rainfall.
have higher temperatures and lower rainfall.
be deserts. - CORRECT ANSWER - Higher temperatures & lower rainfall
Which of the following plants are bryophytes?
Mosses
Angiosperms
Horsetails
Ferns - CORRECT ANSWER - Mosses
In mosses, the green, leafy portion represents which generation in the alternation of generations?
diploid gametophyte
diploid sporophyte
haploid gametophyte
haploid spore
haploid sporophyte - CORRECT ANSWER - Haploid gametophyte
Plants that grow on other plants for structural support, but do not consume nutrients or energy
from them, are called?
ycophytes.
tracheophytes.
parasites.
photophytes.
epiphytes. - CORRECT ANSWER - Epiphytes
