Worksheetssexual reproduction in angiosperm
Total questions: 25
Worksheet time: 16mins
We have all seen bees fly around flowers. When a bee drinks nectar from one flower they sometimes brush up against the stamen. When they go to another flower, they can drop some pollen on the pistil. What process are the bees helping with?
pollination
germination
fertilization
seed dispersal
In which part of the flower does fertilization take place? Be specific.
the stamen
the pistil
the ovary
the petals
The primary function of these parts of the flower is
reproduction
photosynthesis
germination
metamorphosis
The petals job is not only to protect the reproductive parts of the plant, but also to
keep wind away from the stamen
attract pollinators with their colors
absorb sunlight
fall off and become food for bugs
The male parts of a flower are ______________.
Choose all the answers apply.
Style
Anther
Filament
Ovary
The _______________ produces pollen grains.
ovary
anther
stigma
pollen tube
The _________ travels to the __________ during fertilization to form a seed.
anther, ovule
pollen, ovule
anther, stigma
pollen, stigma
The female parts of a flower are ____________________.
Choose all the answers apply.
ovary
ovule
anther
stigma
The ______ supports the stigma and keeps it high above the plant to receive pollen grains easily.
style
filament
stalk
stem
The plant male gamete is also called the _______________.
anther
pollen grain
sperm
ovule
Pollination is the process of transferring pollen from the anther of one flower to the ______________ of another flower.
filament
style
stigma
ovary
ovule
After a pollen grain has reached the stigma, it travels through the __________ to reach the ovary.
style
stalk
stigma
stem
After fertilization, each _______forms a seed, while each _________forms a fruit.
ovary ... ovule
ovule ... ovary
egg ... ovary
pollen ... ovary
ovary ... pollen
The process of the pollen fusing with the ovule is called ________________.
pollination
fertilisation
germination
reproduction
Double fertilisation is exhibited by
algae
aquatic plant
angiosperms
submerged plant
Which nucleus is needed to create a pathway inside the style for fertilisation?
pollen mother cell nucleus
Generative nucleus
Sperm nucleus
Tube nucleus
Which nucleus will divide again before fertilisation?
pollen mother cell nucleus
Generative nucleus
Sperm nucleus
Tube nucleus
Which statement best describes double fertilisation?
one male nucleus fertilises two polar nuclei
two male nuclei fertilise two haploid nuclei in the ovule.
one male nucleus fertilises one egg cell and the other fertilises two polar nuclei
one male nucleus fertilises one egg cell and the other fertilises one female nucleus.
Diagram above shows the stages of development of a pollen grain.
What processes take place during P and R?
P: meiosis I
R: meiosis II
P: meiosis II
R: mitosis
P: meiosis
R: mitosis
P: mitosis
R: mitosis
Diagram above shows the stages of development of a pollen grain.
What are the numbers of chromosomes in K, M and N?
K: diploid
M: diploid
N: haploid
K: haploid
M: haploid
N: haploid
K: diploid
M: haploid
N: haploid
K: haploid
M: diploid
N: haploid
Diagram above shows a longitudinal section of an embryo sac.
What happen to P, Q, R and S after fertilisation?
P: degenerates
Q: form a triploid nucleus
R: degenerates
S: forms a zygote
P: form a triploid nucleus
Q: degenerates
R: forms a zygote
S: degenerates
P: form a triploid nucleus
Q: forms a zygote
R: degenerates
S: degenerates
P: degenerates
Q: forms a zygote
R: form a triploid nucleus
S: degenerates
Diagram above shows a longitudinal section of a flower.
Which structure produces female reproductive cells?
A
B
C
D
Diagram above shows a longitudinal section of the reproductive parts of a flower during fertilisation.
If the somatic cells of the flower contain 20 chromosomes, classify the parts according to their respective chromosomal numbers.
Diploid cells (2n = 20): I, III, VII
Haploid cells (n = 10): II, IV, V, VI
Diploid cells (2n = 20): I, II, IV
Haploid cells (n = 10): III, V, VI, VII
Diploid cells (2n = 20): II, III, V
Haploid cells (n = 10): I, VI, IV, VII
Diploid cells (2n = 20): II, IV, V
Haploid cells (n = 10): I, III, VI, VII
Diagram above shows the ovule and ovary after fertilisation.
What are P and Q going to form?
P: triploid nucleus cell
Q: zygote
P: endosperm
Q: embryo
P: endosperm
Q: zygote
P: intergument
Q: embryo
State the importance of endosperm in a seed during germination.
divides and differentiates into radicle, plumules and cotyledons
form the fruits
protects the embryo
provides nutrients to the growing embryo
