Flowers exam Flashcards

A life cycle in which there is both a multicellular diploid form, the sporophyte, and a multicellular haploid form, the gametophyte.

Sporophyte

The diploid, multicellular stage in the life cycle of a plant that produces haploid spores through meiosis.

The haploid, multicellular stage in the life cycle of a plant that produces gametes through mitosis.

Microspores (male) and megaspores (female)

A process in angiosperms where one sperm fertilizes the egg, forming a zygote, and the other sperm combines with two polar nuclei to form the endosperm.

To provide nutrients to the developing embryo.

A flower that has all four basic floral organs: sepals, petals, stamens, and carpels.

A flower that has both male (stamens) and female (carpels) reproductive structures.

A form of asexual reproduction in plants where new individuals are produced from the vegetative parts of the plant, such as stems, roots, or leaves.

Underground stems that can produce new individual plants.

Above-ground stems that can produce new individual plants.

The formation of seeds without fertilization, resulting in a clone of the parent plant.

A leaf-like structure that encloses and protects the bud of a flower.

The collective term for all the sepals of a flower.

The collective term for all the petals of a flower.

The male reproductive part of a flower, consisting of an anther and a filament.

The female reproductive part of a flower, consisting of the stigma, style, and ovary.

To receive pollen during pollination.

A gland that secretes nectar, attracting pollinators.

To transport sperm from the pollen grain to the ovule.

The female gametophyte within the ovule of a flowering plant.

A genetic mechanism in plants that prevents self-pollination and encourages cross-pollination.

A mechanism to prevent self-pollination by having male and female gametophytes mature at different times.

A mechanism to prevent self-pollination by spatially separating male and female floral organs.

Traits in flowers that have evolved in response to specific pollinators.

The process by which two or more species influence each other's evolutionary pathway.

Increased genetic diversity.

Plants that have both male and female flowers on the same individual.

Plants that have male and female flowers on separate individuals.