HS210 Practice Exam All Questions/Answer Graded A+
2025/2026
Which of the following accurately describes what takes place during double fertilization?
- The correct answer is: One male pollen cell fuses with one female egg cell to form the
diploid zygote while another pollen cell fuses with the two polar nuclei to form the triploid
endosperm.
What class of plants does double fertilization occur in? - Angiosperms
During double fertilization, when one of the pollen cells fuses with the two polar nuclei,
which of the following is formed? - Endosperm
The female reproductive organ of a flower is called: - The pistil
If a flower is perfect, it must at least contain which of the following parts? - Pistil and
stamen
The male gamete of a plant is the - Pollen
After the fertilization, the ovary of the flower becomes the: - Fruit
After fertilization, the ovule of the flower becomes the - Seed
Which of the following is a common breeding goal for ornamental plants?
a. Larger flowers
b. Fragrance
c. Non-invasiveness
d. Disease resistance
e. All of the above - All of the above
If you wanted to cross two plants with very small flowers that would be difficult to work
with by hand, which of the following techniques might you want to use to make the
cross? - Insect pollination
You are working with an invasive, ornamental plant that you are trying to breed to make
sterile (or at least infertile). Which of following techniques would probably be most
helpful in achieving that goal? - Wide across
A plant that is the direct result of a controlled cross of two parent plants and that is the
first generation of offspring from that cross is referred to as: - F1 Hybrid
What type of seed is pictured above? - Type lll
, Which of the following methods should be used to break chemical dormancy? -
Leaching
Which of the following methods should be used to break physiological deep dormancy?
Check all answers that apply.
Select one:
a. Leaching
b. Warm moist stratification
c. Cool moist stratification Correct
d. Seed coat removal
e. Scarification - Cool moist stratification
Which of the following methods typically should be used to break double dormancy?
Check all answers that apply. - c. Scarification Correct
d. Cool moist stratification
Seeds with double dormancy often need both a scarification and a stratification
treatment. Which treatment should be performed first? - Scarification
Which of the following methods should be used to break epicotyl dormancy? Check all
answers that apply.
Select one or more:
a. Scarification
b. Warm moist stratification
c. Cool moist stratification
d. Smoke treatment Incorrect
e. Leaching - b. Warm moist stratification
c. Cool moist stratification
Which of the following is NOT a type of exogenous, seed coat dormancy? -
Physiological
Which of the following methods should be used to break mechanical dormancy? Check
all answers that apply.
Select one or more:
a. Cool moist stratification
b. Leaching
c. Scarification Correct
d. Smoke treatment
e. Warm moist stratification - Scarification
Which of the following methods should be used to break physical dormancy? -
Scarification
Which of the following is an effective way to remove Type III seeds from a fruit?
Select one:
2025/2026
Which of the following accurately describes what takes place during double fertilization?
- The correct answer is: One male pollen cell fuses with one female egg cell to form the
diploid zygote while another pollen cell fuses with the two polar nuclei to form the triploid
endosperm.
What class of plants does double fertilization occur in? - Angiosperms
During double fertilization, when one of the pollen cells fuses with the two polar nuclei,
which of the following is formed? - Endosperm
The female reproductive organ of a flower is called: - The pistil
If a flower is perfect, it must at least contain which of the following parts? - Pistil and
stamen
The male gamete of a plant is the - Pollen
After the fertilization, the ovary of the flower becomes the: - Fruit
After fertilization, the ovule of the flower becomes the - Seed
Which of the following is a common breeding goal for ornamental plants?
a. Larger flowers
b. Fragrance
c. Non-invasiveness
d. Disease resistance
e. All of the above - All of the above
If you wanted to cross two plants with very small flowers that would be difficult to work
with by hand, which of the following techniques might you want to use to make the
cross? - Insect pollination
You are working with an invasive, ornamental plant that you are trying to breed to make
sterile (or at least infertile). Which of following techniques would probably be most
helpful in achieving that goal? - Wide across
A plant that is the direct result of a controlled cross of two parent plants and that is the
first generation of offspring from that cross is referred to as: - F1 Hybrid
What type of seed is pictured above? - Type lll
, Which of the following methods should be used to break chemical dormancy? -
Leaching
Which of the following methods should be used to break physiological deep dormancy?
Check all answers that apply.
Select one:
a. Leaching
b. Warm moist stratification
c. Cool moist stratification Correct
d. Seed coat removal
e. Scarification - Cool moist stratification
Which of the following methods typically should be used to break double dormancy?
Check all answers that apply. - c. Scarification Correct
d. Cool moist stratification
Seeds with double dormancy often need both a scarification and a stratification
treatment. Which treatment should be performed first? - Scarification
Which of the following methods should be used to break epicotyl dormancy? Check all
answers that apply.
Select one or more:
a. Scarification
b. Warm moist stratification
c. Cool moist stratification
d. Smoke treatment Incorrect
e. Leaching - b. Warm moist stratification
c. Cool moist stratification
Which of the following is NOT a type of exogenous, seed coat dormancy? -
Physiological
Which of the following methods should be used to break mechanical dormancy? Check
all answers that apply.
Select one or more:
a. Cool moist stratification
b. Leaching
c. Scarification Correct
d. Smoke treatment
e. Warm moist stratification - Scarification
Which of the following methods should be used to break physical dormancy? -
Scarification
Which of the following is an effective way to remove Type III seeds from a fruit?
Select one:
