Review Worksheet Flashcards
Which of the following is not a function resulting from the action of guard cells?
a) lowering the loss of water upon detecting certain signals from water-stressed roots
b) keeping the leaves at a more positive water potential relative to the roots
c) allowing an optimal rate of photosynthesis to occur by letting CO2 enter the leaf
d) permitting cooling of the leaf by the evaporative loss of water
e) allowing water to exit the leaf and so generating tension in the xylem tissue
b) keeping the leaves at a more positive water potential relative to the roots
If leaf cells have become flaccid, what could you do to reverse that process?
a) Add salt to the soil.
b) Add sugar to the roots.
c) Add water to the leaves.
d) b or c
e) a or b
c) Add water to the leaves.
If you added a chemical to leaves to stop stomatal opening, what would happen to the xylem?
a) The xylem cells would die.
b) The water in the xylem would stop moving.
c) Phloem sap would leak into the xylem.
d) The xylem would swell.
b) The water in the xylem would stop moving.
Which are the closest algal relatives of land plants?
a) monilophytes
b) charophytes
c) chrysophytes
d) bacillariophytes
e) rhodophytes
b) charophytes
One conclusion you can draw from the alternation of generations
a) gametophytes have fewer chromosomes than sporophytes do.
b) gametophytes evolved before sporophytes.
c) gametophytes grow from sporophytes.
d) gametophyte cells are produced by mitosis;
sporophyte cells are produced by meiosis.
a) gametophytes have fewer chromosomes than sporophytes do.
and
b) gametophytes evolved before sporophytes.
Which plant-derived material(s) is/are used for fuel to produce heat?
a) peat
b) coal
c) oil from nonpolar components
d) a and b
e) a, b, and c
e) a, b, and c
Why do two sperm nuclei travel down the pollen tube?
a) They both stimulate growth of the pollen tube.
b) One fertilizes the egg, and the other combines with the two polar nuclei.
c) One fertilizes the egg, and the other fertilizes the synergid.
d) One is for fertilizing the egg, and one directs the pollen tube toward the micropyle.
e) One fails in fertilization, there is a backup nucleus.
b) One fertilizes the egg, and the other combines with the two polar nuclei.
Adaptations critical to plant success in terrestrial environments include seeds, vascular tissue, cuticle, and flowers. Which lists these adaptations in the order in which they appeared?
a) seeds, vascular tissue, flowers, cuticle
b) cuticle, seeds, flowers, vascular tissue
c) cuticle, vascular tissue, seeds, flowers
d) vascular tissue, cuticle, seeds, flowers
c) cuticle, vascular tissue, seeds, flowers
Four adaptations—cuticle, vascular tissue, seeds, and flowers—are key characters defining four major modern plant groups. Which group first evolved vascular tissue?
a) ferns
b) bryophytes
c) flowering plants
d) gymnosperms
a) ferns
Phloem sap flows from source to sink because of _____.
a) adhesion
b) positive pressure
c) salt concentrations
d) root pressure
e) cohesion
b) positive pressure
Which of these is present in xylem
a) guard cells
b) tracheids
c) sieve plates
d) cuticles
e) all of the above
b) tracheids
Which is a gymnosperm?
a) Cone baring plant
b) Flowering plant
c) Moss
d) fern
a) Cone baring plant
