Practice
questions for GBII Spring 2004 Final Exam
1.
The following plant structures are all
adaptations specifically for a terrestrial environment except
A) roots.
B) seeds.
C) waxy cuticle.
D) xylem.
E) cell walls.
2.
The following are all true concerning the
sporophyte or gametophyte generations in flowering plants except
A) the flower is composed of gametophyte tissue only.
B) the sporophyte generation is what we see when observing a
plant.
C) the gametophyte generation consists of relatively few cells
within the flower.
D) the sporophyte generation is dominant.
E) unlike ferns, the gametophyte generation is not
photosynthetic.
3.
Gymnosperms differ from ferns in that
gymnosperms
A) produce seeds.
B) have macrophylls.
C) have pollen.
D) Both A and C are correct.
E) A, B, and C are correct.
4.
Which of the following is the correct order of
floral organs from the outside to the inside of a complete flower?
A) spores-gametes-zygote-embryo
B) male gametophyte-female
gametophyte-sepals-petals
C) sepals-stamens-petals-carpels
D) petals-sepals-stamens-carpels
E) sepals-petals-stamens-carpels
5.
What is the result of double fertilization in
angiosperms?
A) The endosperm develops into a diploid
nutrient tissue.
B) A triploid zygote is formed.
C) Two embryos develop in every seed.
D) The fertilized antipodals
develop into the seed coat.
E) Both a diploid embryo and triploid endosperm
are formed.
6.
Fruits develop from
A) receptacles.
B) fertilized eggs.
C) ovaries.
D) ovules.
E) microsporangia.
7.
Which of the following is not an advantage of
producing seeds?
A) Seeds can undergo periods of dormancy.
B) Seeds and their fruits are a means of seed
dispersal.
C) Seeds often have hard walls that deter
seed-eating animals.
D) Seeds germinate irregularly so that they can
survive periods of adverse conditions.
E) Seeds germinate immediately so that natural
populations are maintained.
8.
Which of the following is true concerning the
water potential of a plant cell?
A) It becomes higher when K+ ions are actively
moved into the cell.
B) It is equal to zero when the cell is in pure
water and is turgid.
C) It becomes lower after the uptake of water by
osmosis.
D) It is higher than that of air.
E) It is equal to 0.23 MPa.
9.
Root hairs are most important to a plant because
they
A) anchor a plant in
the soil.
B) store starches.
C) provide a habitat
for nitrogen-fixing bacteria.
D) contain xylem
tissue.
E) increase the surface
area for absorption.
10. Which of
the following is not a fundamental difference between monocot and dicot morphology and anatomy? Monocots have __________,
while dicots have __________.
A) fibrous roots; taproots
B) one cotyledon; two cotyledons
C) vascular bundles in a ring; vascular bundles
scattered throughout the stem
D) parallel veins; net veins
11. In
flowering plants, pollen is released from the
A) sepal.
B) pollen tube.
C) anther.
D) carpel.
E) stigma.
12. What
provides the energy for water transport upward in the xylem?
A) sucrose
B) ATP
C) adherence of water molecules to hydrophilic
xylem cell walls
D) proton gradients
E) the sun
13. The amount
and direction of movement of water in plants can always be predicted by
measuring
A) dissolved solutes.
B) air pressure.
C) water potential, Y.
D) rainfall.
E) proton gradients.
14. The Casparian strip depicted in the adjacent figure forces
solutes to pass through the
A) apoplastic pathway
B) transmembrane pathway
C) the phloem
D)
the epidermis
E) the symplastic pathway
(If
you cannot see the image with you browser, please see figure 36.7 in your book)
15. The
classic experiment depicted in the figure below showed that the tip of the coleoptile releases a chemical messenger that:
A) stimulates different bending responses depending upon the
time of day
B)
differs in concentration on different sides of the plant
C) stimulates cell elongation
D)
inhibits cell elongation
E)
Both B and C are correct.
(If
you cannot see the image with you browser, please see figure 39.5
in your book)
Answers:
1-E, 2-A, 3-D, 4-E, 5-E, 6-C, 7-E, 8-B, 9-E, 10-C, 11-C, 12-E, 13-C,14-E, 15-E