Flower Structure and Function
The male reproductive organs of a flower, which produce pollen grains.
What are stamens?
This process involves the transfer of pollen from an anther to a stigma.
What is pollination?
These animals are often attracted to flowers by bright colors and nectar.
What are bees?
The part of the seed that provides nutrients to the developing plant embryo.
What is the endosperm?
The process of crossing two different plant varieties to produce a hybrid.
What is hybridization?
The female reproductive organ of a flower that contains the ovary.
What is a carpel?
This is the union of a sperm cell with an egg cell in plants.
What is fertilization?
The pollen nucleus forms this in order to deliver the sperm nuclei to the ovary.
What is a pollen tube?
These structures protect seeds and can aid in their dispersal by animals, wind, or water.
What are fruits?
This technique involves altering the genetic material of an organism to achieve desired traits.
What is genetic engineering?
These flower parts are often colorful and help attract pollinators.
What are petals?
After fertilization, the ovule develops into this structure.
What is a seed?
Flowers that are typically small and not colorful often rely on this type of pollination.
What is wind pollination?
These are the three parts of an embryo inside a seed.
Plants that have been genetically modified to express a trait from another species.
What are transgenic plants?
The part of the stamen that produces pollen grains.
What is the anther?
This process in angiosperms involves two sperm cells; one fertilizes the egg, and the other forms the endosperm.
What is double fertilization?
The triploid cell that forms after fertilization becomes the _______?
What is the endosperm?
The protective outer coating of a seed.
What is the seed coat?
Asexual reproduction in plants in which a new plant grows from a fragment of the parent plant.
What is vegetative reproduction?
The sticky part of the carpel where pollen grains adhere.
What is the stigma?
The mature ovary of a flower that protects seeds and aids in their dispersal.
What is a fruit?
This cell divides first by meiosis and then by mitosis to form the embryo sac or female gametophyte.
What is the megaspore mother cell?
These molecules are photoreceptors and critical for plant growth.
What are phytochromes and cryptochromes?
The debate around this technology centers on its safety, ethics, and impact on biodiversity.
What is the debate over GMOs (genetically modified organisms)?