Ch.1-Sexual reproduction In Flowering Plants Flashcards
What is sexual reproduction in flowering plants?
It is the reproductive process in angiosperms where male (pollen) and female (ovules) structures interact to produce seeds.
Why are flowers significant in plant biology?
Flowers serve as critical reproductive organs and highlight the diversity of reproductive strategies for species survival and genetic variation.
What dual roles do flowers serve?
Flowers provide aesthetic beauty for humans and function as reproductive organs for plants.
What is floriculture?
The science of growing and cultivating flowers, emphasizing their economic and cultural importance.
What are the parts of a flower?
Key parts include stigma, anther, petal, style, ovary, sepal, and filament.
What is the function of the stigma?
It is the upper part of the female reproductive organ where pollen grains land and germinate.
What does the anther do?
It produces and releases pollen grains.
What is the role of petals?
They attract pollinators like insects or birds.
What is the style’s function?
It connects the stigma to the ovary and allows the pollen tube to grow during fertilization.
What does the ovary contain?
It contains ovules, which develop into seeds after fertilization.
What is the sepal’s role?
They protect the developing bud.
What is the filament?
A slender stalk that supports the anther.
What happens during pre-fertilization?
Hormonal and structural changes occur, leading to the development of male and female reproductive organs.
What is microsporogenesis?
It is the process where pollen mother cells undergo meiosis to form microspore tetrads.
What is the tapetum’s function?
It nourishes the developing pollen and may be bi-nucleate for increased nutrient support.
What are the characteristics of pollen grains?
Each pollen grain represents a male gametophyte capable of fertilizing the female gametophyte.
