Alternation of Generations
The fluctuation between the diploid (sporophyte) and haploid
(gametophyte) life stages that occurs in plants.
The male sex organ of terrestrial plants; where sperm cells are generated.
The female sex organ of terrestrial plants; where egg cells are produced.
An organism that synthesizes its own organic nutrients and does not rely on
other organisms for food.
Having two sets of chromosomes, one from each parent.
The outer layer of cells found on the body wall of an organism.
A haploid sex cell (either an egg or sperm cell); male and female gametes
join during fertilization to create a diploid zygote.
A haploid plant or plant structure that produces haploid gametes
Having only one set of chromosomes.
A component of the cell layer that covers the reproductive organs of plants and
prevents them from drying out.
The process by which plants and other autotrophic organisms convert light
energy into organic materials.
The part of a plant beneath the soil; responsible for collecting water and
minerals from the soil, storing nutrients, and securing the plant to the ground.
The part of the plant above the soil, including all aerial structures such as
stems, leaves, flowers, and fruits; gathers carbon dioxide and light energy for
photosynthesis, provides surfaces for gas exchange, and contains the plant's
Haploid cell from which a gametophyte is produced.
A diploid plant or plant structure that produces haploid spores through
A very small epidermal pore, surrounded by two guard
cells, through which gases
and out of a leaf.