Worksheets9.4 Reproduction in plants
Total questions: 10
Worksheet time: 8mins
A pollen tube grows down the style to an egg inside the ovary of a flower. What is the next process that occurs?
Dispersal
Fertilization
Germination
Pollination
Where does production of haploid gametes occur?
I and II only
III and IV only
I and III only
II and IV only
Which statement describes the control of reproduction in flowering plants?
Flowering in short-day plants results from changes in gene expression in the shoot apex.
Flowering in long-day plants is controlled by the production of auxins in the shoot apex.
All flowering plants depend on the duration of periods of light and darkness to regulate the timing of reproduction.
Flowering in short-day plants occurs when day length is longer than 12 hours.
What is a difference between pollination and fertilization in flowering plants?
Pollination is movement of pollen from one flower to another whereas fertilization occurs after self-pollination.
Pollination is movement of seeds away from the parent plant whereas fertilization is union of two seeds.
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.
Pollination is movement of pollen whereas fertilization is movement of gametes from flower to flower.
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?
Interrupt the day with a period of darkness.
Close blinds at the end of the night to delay the start of the light period.
Turn on the lights during the night for a brief period.
Extend the cycle of light and dark to more than 24 hours.
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?
Germination
Flowering
Pollination
Seed dispersal
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?
A
B
C
D
Which process is matched with a valid example?
A
B
C
D
Chrysanthemums are an important commercial flower. As a short-day plant, how can growers induce chrysanthemums to flower out of season?
Expose plants to short bursts of light for 24 hours
Expose plants to 15 hours of continuous light
Expose plants to 12 hours of light and 12 hours of darkness
Expose plants to 15 hours of continuous darkness
How do most angiospermophyta improve sexual reproductive success?
By flowering during long days
By flowering during short days
By using mutualistic pollinators
By using micropropagation
