Plant Life Cycles and Reproduction

the production of alternating asexual and sexual reproductive stages, consisting of a multicellular gametophyte (haploid) generation and a multicellular sporophyte (diploid) generation

the male part of the flower that produces microspores and develops pollen

the male reproductive organ in mosses and ferns

plant reproduction in which sexual organs take part but seeds form without the union of gametes

the female reproductive organ in mosses and ferns

having a double set of chromosomes in homologous pairs; the diploid condition is designated by 2n

a female reproductive cell or gamete

the protective coating around an angiosperm seed

the union of sperm and egg

the stalk of the stamen that supports the anther

the multicellular haploid form taken by a plant during alternation of generations

the period during which a seed begins to grow

having a single set of chromosomes, which is half the total of the parent; the haploid condition is designated by 1n or n

having two or more different types of spores

having only one type of spore

a structure in an ovary that contains the female gametophyte and is fertilized by the sperm

the female organ of a flower

transfer of pollen from the male structures to female structures in a plant

an underground stem growing horizontally that sends roots down and plant shoots upward from a primary plant

a leaflike structure that protects a flower bud

a male reproductive cell or gamete

a sac for producing spores

an organism that produces spores in a multicellular diploid form

the male, pollen-producing reproductive organ of a flower

the part of a flower's carpel to which pollen sticks

a shoot that grows along the ground and sends out roots from shoot nodes

structure in a gymnosperm that has overlapping scales, such as a pine cone

plant that has tissues for transporting water or sap

asexual reproduction in plants, such as stolons or by tubers

a fertilized egg