An Angiosperm Life Cycle: Flowering Plant Reproduction

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angiosperms are best described as: Flowering nonvascular plants Seedless nonvascular plants Flowering vascular plants Vascular plants that produce naked seeds Seedless vascular plants

Flowering vascular plants

when does the diploid stage start?

once an egg has been fertilized by a sperm

what will happen when gametophytes have fully developed?

they will produce gametes

flowers

which are specialized structures for reproduction

megaspore

which will develop into the female gametophyte and is much larger than the male spore

microspore

will develop into the male gametophyte and is much smaller than the female spore

what can angiosperms be either?

can be either be unisexual or bisexual, meaning that some flowering plants contain only male or female structures, while others contain both male and female structures

Angiosperms

flowering vascular plants

what are the roots of angiosperm?

from two Greek words: 'angio,' which means 'container,' and 'sperm,' which means 'seed.

what are the first structures in the haploid stage?

the microspore and the megaspore

what will eventually become the multicellular female gametophyte?

the ovary

what will happen until fertilization occurs?

the union of the egg and sperm - the cells remain in the haploid stage.

double fertilization

A fertilization process that requires two sperm to fuse with two other cells

The mature microgametophyte is produced in which structure? Stigma Pollen grain Ovary Anther Sepal

Anther

Which of the following best describes the dominant life stage in angiosperms? Haploid sporophyte Triploid sporophyte Diploid gametophyte Diploid sporophyte Haploid gametophyte

Diploid sporophyte

Which structure is a result of double fertilization and provides a food sources for the developing embryo? Ovary Sporophyte Flower Pollen grain Endosperm

Endosperm

In the angiosperm, which of these structures is responsible for producing the female gametes? Microsporangium Megagametophyte Megasporangium Microgametophyte

Megagametophyte

when will pollination occur?

\when the pollen grain lands on the female structures in a flower

what does the combination of the haploid sperm cell with a double nucleus create?

a cell that actually has three copies of genetic information

endosperm

becomes the food source for the developing embryo

what is the male gametophyte in angiosperms?

is the pollen and develops in the anther of the flower

what will the developing embryo do?

it will use this source of food and eventually develop into a mature sporophyte

what will the female and male parts of the flower produce?

megaspores, and the male parts will develop microspores, continuing this cycle.


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