Angiosperm Life Cycle and Seed Plant Evolution

Pollination

Ovule

True (A)

<p>Megasporocyte</p> Signup and view all the answers

<p>Three rounds of mitosis without cytokinesis</p> Signup and view all the answers

<p>One egg cell, Two synergid cells, Two polar nuclei, and Three antipodal cells</p> Signup and view all the answers

<p>Synergid</p> Signup and view all the answers

<p>They fuse to form a diploid central cell</p> Signup and view all the answers

<p>Embryo sac</p> Signup and view all the answers

<p>Within the ovule of the ovary</p> Signup and view all the answers

The process of transferring pollen grains from the anther of a flower to the stigma.

The life cycle of flowering plants, characterized by the production of flowers, seeds, and fruits.

Reproductive structures in plants that produce pollen grains (male gametophytes).

Reproductive structures in plants that receive pollen grains during pollination.

A multicellular structure that develops from a single megaspore and contains the female gametophyte (embryo sac).

A diploid cell within the ovule that undergoes meiosis to produce megaspores.

Haploid cells produced by meiosis of the megasporocyte, which develop into the female gametophyte.

The process of cell division in which the nucleus divides but the cytoplasm does not

The female gamete (sex cell) produced by the embryo sac.

Two small cells in the embryo sac that flank the egg cell and guide the pollen tube to the egg.

The opening in the ovule through which the pollen tube enters.

Structures within the ovary of a flower that contain ovules.

The process of double fertilization in angiosperms, where one sperm nucleus fertilizes the egg cell, and the other sperm nucleus fertilizes the central cell.

The diploid cell formed by the fusion of the egg cell and a sperm nucleus during fertilization.

The triploid tissue that nourishes the developing embryo in the seed.

Haploid structures produced by the male reproductive organs of flowering plants.

A tube that grows from a pollen grain through the style of the flower to deliver sperm to the egg cell.

The reduced, multicellular male gametophyte of a flowering plant, contained within the pollen grain.

Reproductive structure in plants that contains the ovary and other parts of the flower.

The process by which a flowering plant develops a seed from a fertilized ovule.