1.The image shows a cross-section of a flower.
Where does production
of haploid gametes occur?
A. I and II only
B. III and IV only
C. I and III only
D. II and IV only
2.Which statement describes the control of reproduction in flowering
plants?
A. Flowering in short-day plants results from changes in gene
expression in the shoot apex.
B. Flowering in long-day plants is controlled by the production of
auxins in the shoot apex.
C. All flowering plants depend on the duration of periods of light and
darkness to regulate the timing of reproduction.
D. Flowering in short-day plants occurs when day length is longer
than 12 hours.
3.What is a difference between pollination and fertilization in flowering
plants?
A. Pollination is movement of pollen from one flower to another
whereas fertilization occurs after self-pollination.
B. Pollination is movement of seeds away from the parent plant
whereas fertilization is union of two seeds.
C. Pollination is movement of pollen from anther to stigma whereas
fertilization depends on the growth of a pollen tube from the stigma
to the ovule.
D. Pollination is movement of pollen whereas fertilization is
movement of gametes from flower to flower.
4.The diagram shows results of experiments into flowering in a species
of plant. What can be used to promote off-season flowering in long-day
plants?
A. Interrupt the day with a period of darkness.
B. Close blinds at the end of the night to delay the start of the light
period.
C. Turn on the lights during the night for a brief period.
D. Extend the cycle of light and dark to more than 24 hours.
5.Fruit-eating bats living in protected Brazilian rainforests are attracted
out of the forests to fly over adjacent cleared land. Which phase of plant
life could the bats be assisting?
A. Germination
B. Flowering
C. Pollination
D. Seed dispersal
6.Agar is a growth medium without nutrients; starch agar is agar with
starch added to it. Seed coats were removed from seeds and the seeds
were used to set up the following conditions. Which plant embryo was
unable to grow?
7.Which flower structures are indicated by the letters Y and Z?
8.Which process is matched with a valid example?
9.Chrysanthemums are an important commercial flower. As a short-day
plant, how can growers induce chrysanthemums to flower out of season?
A. Expose plants to short bursts of light for 24 hours
B. Expose plants to 15 hours of continuous light
C. Expose plants to 12 hours of light and 12 hours of darkness
D. Expose plants to 15 hours of continuous darkness
10.How do most angiospermophyta improve sexual reproductive
success?
A. By flowering during long days
B. By flowering during short days
C. By using mutualistic pollinators
D. By using micropropagation
11.When a plant stem bends towards sunlight, what change does auxin
promote in the cells on the side of the stem away from the light?
A. Translocation
B. Cell differentiation
C. Cell elongation
D. Transcription
12.The following is a diagram of a flower. What structures are indicated
by the letters X, Y and Z?
13.What steps occur in germination after water uptake?
A. Gibberellin is produced, followed by amylase activation
B. Gibberellin stimulates photosynthesis to begin in the cotyledons
C. Amylase breaks down starch to glucose which activates the embryo
D. Amylase synthesis followed by activation of gibberellin
